阅读说明：本技术 一种有机废弃物腐解剂及改良盐碱地的生物有机肥 (Organic waste decomposition agent and bio-organic fertilizer for improving saline-alkali soil ) 是由 张世宏 黄玉茜 李壮 梁月 陈丽娜 李凤兰 冯艳忠 姜雪峰 梁飞 孔祥峰 何流琴 于 2020-12-01 设计创作，主要内容包括：本发明公开了一种有机废弃物腐解剂及改良盐碱地的生物有机肥,本发明的腐解剂主要由复合菌剂、硫酸亚铁、硫酸镁、尿素和小麦麸组成的原料制备而成。各原料以重量计为：复合菌剂5-10份、硫酸亚铁1-2份、硫酸镁1-2份、尿素3-5份和小麦麸80-90份。生物有机肥的制备步骤为：按照每立方米有机废弃物施用腐解剂0.5-1kg的量,将原料混合均匀；调整混合物料的水分含量为40-70％；在高于4℃的温度下,将混合物料堆积发酵,当发酵物料内温度与环境温度差值≤10℃的状态持续10天以上时,获得生物有机肥。本发明的生物有机肥施入盐碱地土壤,能促进种植于盐碱地的作物生长,降低盐碱地的含盐量和pH值,改善土壤理化性质。(The invention discloses an organic waste decomposition agent and a biological organic fertilizer for improving saline-alkali soil. The weight percentages of the raw materials are as follows: 5-10 parts of composite microbial inoculum, 1-2 parts of ferrous sulfate, 1-2 parts of magnesium sulfate, 3-5 parts of urea and 80-90 parts of wheat bran. The preparation steps of the biological organic fertilizer are as follows: uniformly mixing the raw materials according to the amount of 0.5-1kg of the decomposition agent applied to each cubic meter of organic waste; adjusting the water content of the mixed material to 40-70%; and stacking and fermenting the mixed material at the temperature higher than 4 ℃, and obtaining the bio-organic fertilizer when the temperature difference between the temperature in the fermented material and the ambient temperature is less than or equal to 10 ℃ lasts for more than 10 days. The biological organic fertilizer is applied to the saline-alkali soil, can promote the growth of crops planted in the saline-alkali soil, reduce the salt content and pH value of the saline-alkali soil, and improve the physical and chemical properties of the soil.)

1. An organic waste decomposition agent is mainly prepared from raw materials consisting of a complex microbial inoculum, ferrous sulfate, magnesium sulfate, urea and wheat bran.

2. The organic waste decomposing agent according to claim 1, characterized in that: the organic waste decomposition agent is prepared by uniformly mixing the raw materials, adjusting the water content to 40-60%, and then carrying out facultative fermentation at the temperature of 10-30 ℃ for more than 15 days, wherein the pH value of the organic waste decomposition agent is less than or equal to 5.0.

3. The organic waste decomposing agent according to claim 1, characterized in that: the raw materials mainly comprise, by weight, 5-10 parts of the complex microbial inoculum, 1-2 parts of ferrous sulfate, 1-2 parts of magnesium sulfate, 3-5 parts of urea and 80-90 parts of wheat bran.

4. The organic waste decomposing agent according to claim 3, characterized in that: the raw materials mainly comprise 5 parts of the complex microbial inoculum, 1.4 parts of ferrous sulfate, 1.0 part of magnesium sulfate, 3.0 parts of urea and 80 parts of wheat bran by weight.

5. The organic waste decomposing agent according to claim 3, characterized in that: the raw materials mainly comprise 7 parts of the complex microbial inoculum, 1.0 part of ferrous sulfate, 2.0 parts of magnesium sulfate, 4.3 parts of urea and 86 parts of wheat bran by weight.

6. The organic waste decomposing agent according to claim 3, characterized in that: the raw materials mainly comprise 10 parts of the complex microbial inoculum, 2.0 parts of ferrous sulfate, 1.7 parts of magnesium sulfate, 5.0 parts of urea and 90 parts of wheat bran by weight.

7. The organic waste decomposing agent according to any one of claims 1 to 6, wherein: the complex microbial inoculum comprises a yellow cyanobacterium, a pinkish polyporus pinosus, trichoderma koningii, lactobacillus plantarum, saccharomyces cerevisiae and bacillus megaterium.

8. A bio-organic fertilizer capable of improving saline-alkali soil is characterized in that: the preparation process of the biological organic fertilizer comprises the following steps:

step 1, uniformly mixing organic waste and the organic waste decomposition agent according to any one of claims 1 to 7 to obtain a mixed material;

step 2, adjusting the moisture content of the mixed material;

and 3, stacking and fermenting the mixed material treated in the step 2 at the temperature higher than 4 ℃, and obtaining the bio-organic fertilizer when the temperature difference between the internal temperature of the fermented material and the ambient temperature is less than or equal to 10 ℃ lasts for more than 10 days.

9. The bio-organic fertilizer according to claim 8, characterized in that: 0.5-1.0kg of the organic waste decomposition agent is applied to each cubic meter of the organic waste, the moisture content is 40-70%, and the fermentation period is 50-120 days.

10. A bio-organic fertilizer according to claim 8 or 9, characterized in that: the organic waste is at least one of livestock and poultry manure, kitchen waste or human excrement and urine in a farm.

Technical Field

The invention belongs to the technical field of saline-alkali soil improvement, and particularly relates to an organic waste decomposition agent and a biological organic fertilizer for improving saline-alkali soil.

Background

Saline-alkali soil is a general term for various salinized soil and alkaline soil. The salinization of the soil causes the farmland to be incapable of cultivating, the economic benefit of the soil is low, and the land resource is wasted. However, saline-alkali soil can be converted into cultivated land through improvement, which has important significance for sustainable development of agriculture.

The biological improvement of the saline-alkali soil does not damage the ecological environment, and the physical and chemical properties and soil microclimate of the soil are improved mainly by introducing, screening and planting salt-tolerant plants, so that the aims of reducing the evaporation of soil moisture and inhibiting the salt return of the soil are fulfilled.

The decomposed substances of the organic wastes contain a large amount of beneficial microorganisms, organic matters and nutrient components, and the physical and chemical properties of the soil can be improved and the quantity of the beneficial microorganisms in the soil can be increased after the organic wastes are applied to the saline-alkali soil.

Therefore, the organic waste decomposition agent containing beneficial microorganisms is developed, and the decomposed organic waste is applied to crops planted in saline-alkali soil, so that the organic waste decomposition agent has great significance for improving the saline-alkali soil.

Disclosure of Invention

The invention aims to provide an organic waste decomposition agent and a biological organic fertilizer for improving saline-alkali soil, wherein the biological organic fertilizer prepared by the organic waste decomposition agent is applied to the saline-alkali soil, so that the growth of crops planted in the saline-alkali soil can be promoted, and the salt content and the pH value of the saline-alkali soil are reduced.

On one hand, the invention provides an organic waste decomposition agent which is mainly prepared from raw materials consisting of a complex microbial inoculum, ferrous sulfate, magnesium sulfate, urea and wheat bran.

Preferably, the organic waste decomposition agent is prepared by uniformly mixing the raw materials, adjusting the moisture content to 40-60%, and then performing facultative fermentation at the temperature of 10-30 ℃ for more than 15 days, wherein the pH value of the organic waste decomposition agent is less than or equal to 5.0.

Preferably, the raw materials mainly comprise, by weight, 5-10 parts of the complex microbial inoculum, 1-2 parts of ferrous sulfate, 1-2 parts of magnesium sulfate, 3-5 parts of urea and 80-90 parts of wheat bran.

Preferably, the raw material mainly comprises 5 parts of the complex microbial inoculum, 1.4 parts of the ferrous sulfate, 1.0 part of the magnesium sulfate, 3.0 parts of the urea and 80 parts of the wheat bran by weight.

Preferably, the raw material mainly comprises 7 parts of the complex microbial inoculum, 1.0 part of the ferrous sulfate, 2.0 parts of the magnesium sulfate, 4.3 parts of the urea and 86 parts of the wheat bran by weight.

Preferably, the raw material mainly comprises 10 parts of the complex microbial inoculum, 2.0 parts of the ferrous sulfate, 1.7 parts of the magnesium sulfate, 5.0 parts of the urea and 90 parts of the wheat bran by weight.

Preferably, the complex microbial inoculum comprises a yellow cyanobacterium, a pinkish polyporus pinosus, a trichoderma koningii, a lactobacillus plantarum, a saccharomyces cerevisiae and a bacillus megaterium.

On the other hand, the invention also provides a biological organic fertilizer capable of improving saline-alkali soil, and the preparation process comprises the following steps:

step 1, uniformly mixing organic waste and the organic waste decomposition agent to obtain a mixed material;

step 2, adjusting the moisture content of the mixed material;

and 3, stacking and fermenting the mixed material treated in the step 2 at the temperature higher than 4 ℃, and obtaining the bio-organic fertilizer when the temperature difference between the internal temperature of the fermented material and the ambient temperature is less than or equal to 10 ℃ lasts for more than 10 days.

Preferably, 0.5-1.0kg of the organic waste decomposition agent is applied to each cubic meter of the organic waste, the moisture content is 40-70%, and the fermentation period is 50-120 days.

Preferably, the organic waste is at least one of livestock and poultry manure, kitchen waste or human excrement and urine in a farm.

The organic waste decomposition agent can effectively decompose and ferment organic wastes into the biological organic fertilizer. The fertilizer is applied to saline-alkali soil, can promote the growth of crops planted in the saline-alkali soil, reduce the salt content and pH value of the saline-alkali soil, and improve the soil physicochemical property and ecological environment of the saline-alkali soil.

Detailed Description

The invention will be further described with reference to specific embodiments, and the advantages and features of the invention will become apparent as the description proceeds. It should be understood that the examples are illustrative only and are not limiting upon the scope of the invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.

In the following description, all methods involved are conventional in the art unless otherwise specified. The starting materials mentioned are all those which are commercially available from the public unless otherwise specified.

The invention takes composite microbial inoculum, ferrous sulfate, magnesium sulfate, urea and wheat bran as main raw materials, and the organic waste decomposition agent is obtained by fermentation. The organic waste decomposition agent can effectively decompose and ferment organic wastes into the biological organic fertilizer, and the fertilizer is applied to the saline-alkali soil, so that the growth of crops planted in the saline-alkali soil can be promoted, the salt content and the pH value of the saline-alkali soil are reduced, and the soil physicochemical property and the ecological environment of the saline-alkali soil are improved.

In one embodiment of the invention, the organic waste decomposition agent is prepared from raw materials consisting of a complex microbial inoculum, ferrous sulfate, magnesium sulfate, urea, wheat bran and clear water. The specific preparation process comprises the following steps: step 1, preparing a complex microbial inoculum; step 2, preparing a mixed material; and 3, fermenting the mixed material.

In the step 1 of preparing the composite microbial inoculum, powder of Talaromyces flavus, powder of Trichosporon roseum, powder of Trichoderma koningii, powder of Lactobacillus plantarum (Lactobacillus plantaginis) and powder of Micrococcus roseusrum) powder, Saccharomyces cerevisiae (Saccharomyces cerevisiae) powder and Bacillus megaterium (Bacillus megatherium) powder, and then compounding the six kinds of powder according to the proportioning relationship by weight to obtain the composite microbial agent, preferably 5-15 parts of bluish yellow bacteria powder, 10-20 parts of pink polyporus culmorum powder, 15-25 parts of corning trichoderma powder, 10-20 parts of lactobacillus plantarum powder, 15-25 parts of Saccharomyces cerevisiae powder and 5-15 parts of Bacillus megaterium powder. On one hand, lactobacillus plantarum, saccharomyces cerevisiae and bacillus megaterium are fermented and cultured in corresponding liquid culture media to obtain bacterial liquids, and then thalli are separated from the fermented culture and dried and concentrated to prepare single-strain solid bacterial powder. The bacterial content of each single bacterial strain powder is respectively as follows: the content of Lactobacillus plantarum is more than or equal to 2.5 multiplied by 10¹⁰cfu/g, the bacteria content of the saccharomyces cerevisiae is more than or equal to 3.5 multiplied by 10⁹cfu/g, the bacterium content of the bacillus megaterium is more than or equal to 5.0 multiplied by 10⁹cfu/g. On the other hand, the bluish yellow fungus, the polyporus piniper and the trichoderma koningii are fermented in corresponding solid culture mediums respectively to obtain solid cultures, and then the solid cultures are dried and crushed to prepare single-strain solid fungus powder. The bacterial content of each single bacterial strain powder is respectively as follows: the content of yellow blue fungus is not less than 1.5 × 10¹⁰cfu/g, the bacterium content of the polyporus pinus is more than or equal to 4.5 multiplied by 10⁹cfu/g, the bacteria content of Trichoderma koningii is more than or equal to 1.0 multiplied by 10¹⁰cfu/g。

In the step 2 of preparing the mixed material, the complex microbial inoculum, the ferrous sulfate, the magnesium sulfate, the urea and the wheat bran are weighed according to the preset weight ratio, then the five raw materials are mixed and stirred uniformly, and clear water is added to adjust the water content of the mixed material to be 40-60%. The weight proportions of the five raw materials are respectively optimized as follows: 5-10 parts of composite microbial inoculum, 1-2 parts of ferrous sulfate, 1-2 parts of magnesium sulfate, 3-5 parts of urea and 80-90 parts of wheat bran.

In the step 3 of fermenting the mixed material, the initial pH of the mixed material is natural, then the mixed material is fermented for more than 15 days at the temperature of 10-30 ℃, and when the pH value of the fermented material is less than or equal to 5.0, the fermentation is finished. The fermented product is used as organic waste decomposition agent.

In another embodiment of the invention, the organic waste is fermented and matured into the bio-organic fertilizer capable of improving saline-alkali soil by using the organic waste decomposition agent. The organic waste is preferably any one or combination of two or more of livestock and poultry manure, kitchen waste or human excrement and urine in a farm. The specific preparation process of the bio-organic fertilizer comprises the following steps:

1) the organic waste and the organic waste decomposition agent are uniformly mixed to obtain a mixed material, and the organic waste decomposition agent is preferably applied in a proportion of 0.5-1.0kg per cubic meter of organic waste.

2) Adjusting the moisture content of the mixed material, wherein the moisture content is preferably 40-70%.

3) And (3) stacking and fermenting the mixed material treated in the step (2) for 50-120 days at the temperature higher than 4 ℃, and obtaining the bio-organic fertilizer when the temperature difference between the internal temperature of the fermented material and the ambient temperature is less than or equal to 10 ℃ lasts for more than 10 days.

When the saline-alkali soil is improved, the biological organic fertilizer is applied to the saline-alkali soil, the fertilizer is preferably used as a base fertilizer, and the application amount of the fertilizer is preferably 15t-45t/hm². The bio-organic fertilizer is preferably continuously applied for more than 3 years, so that the medium and light saline-alkali soil can be better improved.

In order to help better understand the technical scheme of the invention, the following examples are provided for illustrating the preparation process of the organic waste decomposition agent, the preparation process of the bio-organic fertilizer for improving saline-alkali soil and the application method of the bio-organic fertilizer.

Example one

The raw materials of the organic waste decomposition agent mainly comprise, by weight, 5 parts of a complex microbial inoculant, 1.4 parts of ferrous sulfate, 1.0 part of magnesium sulfate, 3.0 parts of urea and 80 parts of wheat bran. The composite microbial agent is composed of 5 parts of albedo bacteria powder, 16 parts of pinkish polyporus frondosus powder, 25 parts of corning trichoderma bacteria powder, 14 parts of lactobacillus plantarum fungus powder, 19 parts of saccharomyces cerevisiae powder and 5 parts of bacillus megaterium powder. Six kinds of bacteriaThe powder can be prepared by self, on one hand, lactobacillus plantarum, saccharomyces cerevisiae and bacillus megaterium are fermented and cultured in corresponding liquid culture media to obtain bacterial liquid respectively, and then thalli are separated from the fermentation culture and dried and concentrated to prepare single-strain solid bacterial powder. The bacterial contents of the three single bacterial strains are respectively as follows: the content of Lactobacillus plantarum is more than or equal to 2.5 multiplied by 10¹⁰cfu/g, the bacteria content of the saccharomyces cerevisiae is more than or equal to 3.5 multiplied by 10⁹cfu/g, the bacterium content of the bacillus megaterium is more than or equal to 5.0 multiplied by 10⁹cfu/g. On the other hand, the bluish yellow fungus, the polyporus piniper and the trichoderma koningii are fermented in corresponding solid culture mediums respectively to obtain solid cultures, and then the solid cultures are dried and crushed to prepare single-strain solid fungus powder. The bacterial contents of the three single bacterial strains are respectively as follows: the content of yellow blue fungus is not less than 1.5 × 10¹⁰cfu/g, the bacterium content of the polyporus pinus is more than or equal to 4.5 multiplied by 10⁹cfu/g, the bacteria content of Trichoderma koningii is more than or equal to 1.0 multiplied by 10¹⁰cfu/g。

The organic waste decomposition agent is prepared by the following steps.

Step 1, preparing a composite microbial inoculum, and uniformly mixing powder of a ceruleus flavedo bacterium, powder of a pinkish polyporus roseus bacterium, powder of trichoderma koningii, powder of a lactobacillus plantarum bacterium, powder of a saccharomyces cerevisiae bacterium and powder of a bacillus megaterium bacterium to obtain the composite microbial inoculum.

And 2, mixing the raw materials to prepare a mixed material, adding the complex microbial inoculum, ferrous sulfate, magnesium sulfate, urea and wheat bran together, mixing and stirring uniformly, and adding clear water into the uniformly mixed material to adjust the water content of the mixed material to 40%.

And 3, fermenting, wherein the initial pH of the material is natural, then carrying out facultative fermentation for 20 days at the temperature of 10-30 ℃, and finishing the fermentation when the pH value of the fermented material is 4.8. The fermented product is used as organic waste decomposition agent 1.

The preparation process of the biological organic fertilizer 1 for improving the saline-alkali soil comprises the following steps:

1) uniformly mixing the livestock and poultry manure of the farm with the organic waste decomposition agent 1 according to the amount of 0.5kg of the organic waste decomposition agent 1 applied to each cubic meter of livestock and poultry manure of the farm in a matching manner to obtain a mixed material.

2) The water content of the mixed material is adjusted to 40%.

3) And (3) stacking and fermenting the mixed material treated in the step (2) for 80 days at the temperature higher than 4 ℃, and obtaining the bio-organic fertilizer 1 when the temperature difference between the fermented material and the environment temperature is less than or equal to 10 ℃ and the state lasts for 10 days.

When the saline-alkali soil is improved, the biological organic fertilizer 1 is applied to the saline-alkali soil as a base fertilizer, and the application amount is 15t/hm²。

Example two

The raw materials of the organic waste decomposition agent mainly comprise 7 parts by weight of composite microbial inoculum, 1.0 part by weight of ferrous sulfate, 2.0 parts by weight of magnesium sulfate, 4.3 parts by weight of urea and 86 parts by weight of wheat bran. The composite microbial agent is composed of 12 parts of albedo bacteria powder, 10 parts of pinkish polyporus frondosus powder, 19 parts of corning trichoderma bacteria powder, 20 parts of lactobacillus plantarum fungus powder, 15 parts of saccharomyces cerevisiae powder and 15 parts of bacillus megaterium powder. On one hand, lactobacillus plantarum, saccharomyces cerevisiae and bacillus megaterium are fermented and cultured in corresponding liquid culture media to obtain bacterial liquids, and then thalli are separated from the fermented culture and dried and concentrated to prepare single-strain solid bacterial powder. The bacterial contents of the three single bacterial strains are respectively as follows: the content of Lactobacillus plantarum is more than or equal to 2.5 multiplied by 10¹⁰cfu/g, the bacteria content of the saccharomyces cerevisiae is more than or equal to 3.5 multiplied by 10⁹cfu/g, the bacterium content of the bacillus megaterium is more than or equal to 5.0 multiplied by 10⁹cfu/g. On the other hand, the bluish yellow fungus, the polyporus piniper and the trichoderma koningii are fermented in corresponding solid culture mediums respectively to obtain solid cultures, and then the solid cultures are dried and crushed to prepare single-strain solid fungus powder. The bacterial contents of the three single bacterial strains are respectively as follows: the content of yellow blue fungus is not less than 1.5 × 10¹⁰cfu/g, the bacterium content of the polyporus pinus is more than or equal to 4.5 multiplied by 10⁹cfu/g, the bacteria content of Trichoderma koningii is more than or equal to 1.0 multiplied by 10¹⁰cfu/g。

The organic waste decomposition agent is prepared by the following steps.

Step 1, preparing a composite microbial inoculum, and uniformly mixing powder of a ceruleus flavedo bacterium, powder of a pinkish polyporus roseus bacterium, powder of trichoderma koningii, powder of a lactobacillus plantarum bacterium, powder of a saccharomyces cerevisiae bacterium and powder of a bacillus megaterium bacterium to obtain the composite microbial inoculum.

And 2, mixing the raw materials to prepare a mixed material, adding the complex microbial inoculum, ferrous sulfate, magnesium sulfate, urea and wheat bran together, mixing and stirring uniformly, and adding clear water into the uniformly mixed material to adjust the water content of the mixed material to 50%.

And 3, fermenting, wherein the initial pH of the material is natural, then carrying out facultative fermentation for 15 days at the temperature of 10-30 ℃, and finishing the fermentation when the pH value of the fermented material is 5.0. The fermented product is used as organic waste decomposition agent 2.

The preparation process of the biological organic fertilizer 2 for improving the saline-alkali soil comprises the following steps:

1) uniformly mixing the organic waste and the organic waste decomposition agent 2 according to the amount of 0.8kg of the organic waste decomposition agent 2 applied to each cubic meter of the organic waste to obtain a mixed material. The organic waste is formed by mixing livestock and poultry manure and kitchen waste in a culturing farm, wherein the weight ratio of the livestock and poultry manure to the kitchen waste is 2: 1.

2) The water content of the mixed material is adjusted to 50%.

3) And (3) stacking and fermenting the mixed material treated in the step (2) for 50 days at the temperature higher than 4 ℃, and obtaining the bio-organic fertilizer (2) when the temperature difference between the temperature in the fermented material and the ambient temperature is less than or equal to 10 ℃ continues for 13 days.

When the saline-alkali soil is improved, the biological organic fertilizer 2 is applied to the saline-alkali soil as a base fertilizer, and the application amount is 30t/hm²。

EXAMPLE III

The raw materials of the organic waste decomposition agent of the embodiment mainly comprise, by weight, 10 parts of the complex microbial inoculum, 2.0 parts of ferrous sulfate, 1.7 parts of magnesium sulfate, 5.0 parts of urea and 90 parts of wheat bran. Wherein the complex microbial inoculum is prepared from powder or powder of ceruleus flavipesThe bacillus subtilis comprises 15 parts of cercospora erythraea powder, 20 parts of pinkish polyporus powder, 15 parts of trichoderma koningii powder, 10 parts of lactobacillus plantarum powder, 25 parts of saccharomyces cerevisiae powder and 11 parts of bacillus megaterium powder. On one hand, lactobacillus plantarum, saccharomyces cerevisiae and bacillus megaterium are fermented and cultured in corresponding liquid culture media to obtain bacterial liquids, and then thalli are separated from the fermented culture and dried and concentrated to prepare single-strain solid bacterial powder. The bacterial contents of the three single bacterial strains are respectively as follows: the content of Lactobacillus plantarum is more than or equal to 2.5 multiplied by 10¹⁰cfu/g, the bacteria content of the saccharomyces cerevisiae is more than or equal to 3.5 multiplied by 10⁹cfu/g, the bacterium content of the bacillus megaterium is more than or equal to 5.0 multiplied by 10⁹cfu/g. On the other hand, the bluish yellow fungus, the polyporus piniper and the trichoderma koningii are fermented in corresponding solid culture mediums respectively to obtain solid cultures, and then the solid cultures are dried and crushed to prepare single-strain solid fungus powder. The bacterial contents of the three single bacterial strains are respectively as follows: the content of yellow blue fungus is not less than 1.5 × 10¹⁰cfu/g, the bacterium content of the polyporus pinus is more than or equal to 4.5 multiplied by 10⁹cfu/g, the bacteria content of Trichoderma koningii is more than or equal to 1.0 multiplied by 10¹⁰cfu/g。

The organic waste decomposition agent is prepared by the following steps.

Step 1, preparing a composite microbial inoculum, and uniformly mixing powder of a ceruleus flavedo bacterium, powder of a pinkish polyporus roseus bacterium, powder of trichoderma koningii, powder of a lactobacillus plantarum bacterium, powder of a saccharomyces cerevisiae bacterium and powder of a bacillus megaterium bacterium to obtain the composite microbial inoculum.

And 2, mixing the raw materials to prepare a mixed material, adding the complex microbial inoculum, ferrous sulfate, magnesium sulfate, urea and wheat bran together, mixing and stirring uniformly, and adding clear water into the uniformly mixed material to adjust the water content of the mixed material to 60%.

And 3, fermenting, wherein the initial pH of the material is natural, then carrying out facultative fermentation for 18 days at the temperature of 10-30 ℃, and finishing the fermentation when the pH value of the fermented material is 4.6. The fermented product is used as organic waste decomposition agent 3.

The preparation process of the biological organic fertilizer 3 for improving the saline-alkali soil comprises the following steps:

1) uniformly mixing the organic waste and the organic waste decomposition agent 3 according to the amount of 1.0kg of the organic waste decomposition agent 3 applied to each cubic meter of the organic waste to obtain a mixed material.

2) Adding clear water into the mixed material, and adjusting the water content of the mixed material to 70%. The organic waste is prepared by mixing livestock and poultry manure, kitchen waste and human excrement, wherein the weight ratio of the livestock and poultry manure, the kitchen waste and the human excrement to urine in the livestock and poultry farm is 2:1: 1.

3) And (3) stacking and fermenting the mixed material treated in the step (2) for 120 days at the temperature higher than 4 ℃, and obtaining the bio-organic fertilizer (3) when the temperature difference between the temperature in the fermented material and the ambient temperature is less than or equal to 10 ℃ lasts for 16 days.

When the saline-alkali soil is improved, the biological organic fertilizer 3 is applied to the saline-alkali soil as a base fertilizer, and the application amount is 45t/hm²。

In order to help better understand the technical scheme of the invention, the following provides a test example of waxy corn planting for illustrating the application effect of the invention.

The first test example: application effect of bio-organic fertilizer in saline-alkali soil improvement and influence on growth of waxy corn

The same saline-alkali field block is selected in Ningxia bronze isthmus, the basic physicochemical properties of the field plough layer soil are that the pH value is 8.72, the total salt content is 14.5g/kg, the organic matter content is 2.48%, the quick-acting phosphorus content is 14.25mg/kg, the quick-acting potassium content is 150mg/kg, and the alkaline hydrolysis nitrogen content is 25.26 mg/kg. 4 groups of experimental designs, including 3 experimental groups and 1 control group, each group of experimental designs 3 experimental cells, each area of the experimental cells is 30m²All test cells are randomly distributed.

The test group is applied with fertilizer and the biological organic fertilizer prepared by the invention. The application method specifically comprises the steps of applying urea, calcium superphosphate, potassium sulfate and a biological organic fertilizer as base fertilizers to soil before waxy corn is planted, uniformly scattering the four fertilizers on the surface of the soil, and then ploughing and sowing.Wherein the fertilizer application amount of the three fertilizers is 330kg/hm of urea²1080kg/hm of calcium superphosphate²28kg/hm of potassium sulfate². The 3 test groups are respectively applied with 1-3 bio-organic fertilizers, and the application amount of the three bio-organic fertilizers is 15t/hm²1, 30t/hm of bio-organic fertilizer²2, 45t/hm of bio-organic fertilizer²And (3) a biological organic fertilizer. The control group was not applied with bio-organic fertilizer, and the rest of the procedure was the same as the test group.

Selecting medium glutinous rice 301 as a test variety, sowing in a ridge culture mode in the middle ten days of 5 months, wherein the ridge shoulder width is 40cm, the ridge height is 15cm, the ridge spacing is 80cm, and the single row planting distance is 20 cm. The same general management is adopted for each cell, and the cells are harvested in the last 9 months. After waxy corn is sowed for 20 days, 10 corn seedlings are dug out from the ridge by a small shovel in each cell, and the root length, the root number, the new root number and the plant height of each corn seedling are measured after the corn seedlings are cleaned by clear water. After the waxy corns are harvested, the yield of the waxy corns in each cell is counted. The average root length, average root number, average new root number, average plant height and average cell waxy corn yield of each group were calculated. The results are shown in Table 1.

TABLE 1

As can be seen from the data in table 1, the 3 groups of waxy corn seeds applied with the bio-organic fertilizer are significantly higher than the control in terms of root length, root number, new root number, plant height and yield of 5 shapes of waxy corn in the plot. Therefore, the prepared biological organic fertilizer 1-biological organic fertilizer 3 can promote the growth of waxy corns and improve the yield of the waxy corns.

In addition, after the waxy corn is harvested, a soil sample is taken from each cell, the pH, the total salt content, the organic matter content, the alkaline hydrolysis nitrogen content, the quick-acting phosphorus content and the quick-acting potassium content of the soil are measured, and the average pH, the average total salt content, the average organic matter content, the average alkaline hydrolysis nitrogen content, the average quick-acting phosphorus content and the average quick-acting potassium content of each group of soil are calculated. The results are shown in Table 2.

TABLE 2

As can be seen from the data in Table 2, the pH and the total salt content of the soil for planting 3 groups of waxy corns applied with the bio-organic fertilizer are both obviously lower than those of the control, and the organic matter content, the alkaline hydrolysis nitrogen content, the quick-acting phosphorus content and the quick-acting potassium content are all obviously higher than those of the control. Therefore, after the prepared biological organic fertilizer 1-biological organic fertilizer 3 are applied to saline-alkali soil, the pH value and the salt content of the soil can be reduced, and the physical and chemical properties of the soil can be improved.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification, or any other related technical fields directly or indirectly, are included in the scope of the present invention.