阅读说明：本技术 一种增硒降镉复合剂在水稻种植中的用途 (Application of selenium-increasing cadmium-reducing complexing agent in rice planting ) 是由 何友明 于 2019-11-19 设计创作，主要内容包括：本发明属于农作物安全生产技术领域,具体涉及一种增硒降镉复合剂在水稻种植中的用途。所述用途为在水稻生产的分蘖末期、灌浆期和乳熟期中的任一或多个时期施用；所述增硒降镉复合剂包括以质量百分比计的蛋白质10-15％、氨基酸5-10％、有机质10-15％、亚硒酸钠10-15％、硫酸锌5-10％、硫酸镁5-10％、速乐硼5-10％、磷酸二氢钾4-8％、维生素+生长素5-10％、全糖分10-15％、活性酶类物质0.5-1％、助剂1％；芸苔素内酯8-22ppm、玉米素2-5ppm；芽孢杆菌和植物乳杆菌。本发明能显著提高水稻中有机硒的含量,降解镉化合物,同时能促进水稻植株生长,实现水稻施后增硒降镉的效果。(The invention belongs to the technical field of crop safety production, and particularly relates to an application of a selenium-increasing and cadmium-reducing complexing agent in rice planting. The application is applied at any one or more of the tillering end stage, the filling stage and the milk stage of rice production; the selenium-increasing cadmium-reducing complexing agent comprises, by mass, 10-15% of protein, 5-10% of amino acid, 10-15% of organic matters, 10-15% of sodium selenite, 5-10% of zinc sulfate, 5-10% of magnesium sulfate, 5-10% of boron celecoxib, 4-8% of potassium dihydrogen phosphate, 5-10% of vitamin and auxin, 10-15% of total sugar, 0.5-1% of active enzyme substances and 1% of an auxiliary agent; brassinolide 8-22ppm and zeatin 2-5 ppm; bacillus and lactobacillus plantarum. The invention can obviously improve the content of organic selenium in the rice, degrade cadmium compounds, promote the growth of rice plants and realize the effects of selenium increase and cadmium reduction after the rice is applied.)

1. The application of the selenium-increasing cadmium-reducing complexing agent in rice planting is characterized in that the selenium-increasing cadmium-reducing complexing agent is applied at any one or more of the tillering end stage, the grain filling stage and the milk maturing stage of rice production; the selenium-increasing cadmium-reducing complexing agent comprises the following components: 10-15% of protein, 5-10% of amino acid, 10-15% of organic matter, 10-15% of sodium selenite, 5-10% of zinc sulfate, 5-10% of magnesium sulfate, 5-10% of boron celecoxib, 4-8% of potassium dihydrogen phosphate, 5-10% of vitamin + auxin, 10-15% of total sugar, 0.5-1% of active enzyme substance and 1% of auxiliary agent in percentage by mass; brassinolide 8-22ppm and zeatin 2-5 ppm; bacillus and lactobacillus plantarum.

2. The use of the selenium-and cadmium-increasing complexing agent for rice planting according to claim 1, wherein the use is applied during the grain filling stage of rice production.

3. The use of the selenium-and cadmium-increasing complexing agent for rice planting according to claim 1, wherein the use is applied during the grain filling stage and the milk maturing stage of rice production.

4. The use of the selenium-increasing and cadmium-reducing compound agent in rice planting according to any one of claims 1 to 3, wherein the application method of the selenium-increasing and cadmium-reducing compound agent specifically comprises the following steps: 100ml of the fertilizer is applied to each mu each time, and the fertilizer is sprayed by diluting 200 times and 300 times.

5. The use of the selenium-increasing and cadmium-reducing compound agent in rice planting according to claim 4, wherein the spraying method comprises the following steps: spraying the mixture on the front and back surfaces of the rice leaves by a sprayer until the mixture drips.

6. The use of the selenium-increasing and cadmium-reducing compound agent in rice planting according to claim 4, wherein the administration time is 10 am or 4 pm.

7. The use of the selenium-increasing and cadmium-reducing compound agent in rice planting according to claim 1, wherein the amino acids in the selenium-increasing and cadmium-reducing compound agent are glycine and glutamic acid; the vitamins are B vitamins and vitamin C; the auxin is tryptophan and indoleacetic acid; the active enzyme substances comprise protease, cellulase and short peptidase; the auxiliary agent is humic acid; the total number of viable bacteria of the bacillus and the lactobacillus plantarum is more than or equal to 20 hundred million/g.

8. The use of the selenium-increasing and cadmium-reducing compound agent in rice planting according to claim 1 or 7, wherein the mass ratio of vitamins to auxin in the selenium-increasing and cadmium-reducing compound agent is 1: 1-3.

9. The use of the selenium-increasing and cadmium-reducing compound agent in rice planting according to claim 1 or 7, wherein the mass ratio of protease, cellulase and short peptidase in the active enzyme substances in the selenium-increasing and cadmium-reducing compound agent is 1-2:1-2: 1-2.

10. The use of the selenium-increasing and cadmium-reducing compound agent in rice planting according to claim 1 or 7, wherein the viable count ratio of bacillus and lactobacillus plantarum in the selenium-increasing and cadmium-reducing compound agent is 5-10: 1.

Technical Field

The invention belongs to the technical field of crop safety production, and particularly relates to an application of a selenium-increasing and cadmium-reducing complexing agent in rice planting.

Background

Rice is the main food crop in China, and the population taking rice as the staple food in China accounts for about 50 percent of the total population. The rice planting area in China reaches 2996 million hectares, and the distribution area is wide. Because of the historical reasons such as grain pressure, high yield is the target in the past in rice production in China, the attention degree on the content of vitamins and trace elements in rice is low, along with the increasing improvement of the living standard of residents and the development of external trade, the inherent quality and the nutritional value of grain crops are increasingly emphasized by people, and the nutritional and health-care rice which is safe to eat and functionalized becomes the urgent need of people at present.

Cadmium is a toxic heavy metal element, and can be gradually accumulated in systems such as liver, kidney, bone, lung and the like after entering a human body, so that the systems are damaged. The chronic cadmium poisoning symptoms are represented by fatigue, olfactory failure, hemoglobin reduction and the like, and people with severe poisoning can cause bone pain and even die due to other complications. Cadmium is listed as the first in 12 kinds of hazardous substances with global significance proposed by the environmental planning agency of the united nations in 1984. The rapid development of modern industries such as ore mining, metal smelting, chemical manufacturing and the like leads to the gradual increase of cadmium pollution of soil and water. Cadmium is reported to enter soil at present in the world as high as 2 million tons per year, and enrichment through the food chain will also threaten human health.

Selenium is an important trace element essential to humans and animals and is a component of glutathione peroxidase, which is essential for the biological metabolism of higher animals. Selenium deficiency of human body can cause diseases such as keshan disease, Kaschin-Beck disease and the like, and seriously affect human health. At present, selenium-rich agricultural products are effective ways for supplementing selenium elements to human bodies, but the selenium content in the current selenium-rich rice is still low, and the capacity of supplementing the selenium elements to the human bodies is limited.

Disclosure of Invention

Aiming at the technical problems, the invention aims to provide the application of the selenium-increasing and cadmium-reducing complexing agent in rice planting, which can reduce the cadmium content of rice, improve the selenium content and promote the yield increase of the rice.

In order to achieve the purpose, the invention adopts the following technical scheme:

the application of the selenium-increasing and cadmium-reducing complexing agent in rice planting is to be applied at any one or more of the tillering end stage, the grain filling stage and the milk maturing stage of rice production; the selenium-increasing cadmium-reducing complexing agent comprises the following components: 10-15% of protein, 5-10% of amino acid, 10-15% of organic matter, 10-15% of sodium selenite, 5-10% of zinc sulfate, 5-10% of magnesium sulfate, 5-10% of boron celecoxib, 4-8% of potassium dihydrogen phosphate, 5-10% of vitamin + auxin, 10-15% of total sugar, 0.5-1% of active enzyme substance and 1% of auxiliary agent in percentage by mass; brassinolide 8-22ppm and zeatin 2-5 ppm; bacillus and lactobacillus plantarum.

Preferably, the use is applied during the grain filling phase of rice production.

Preferably, the use is for application during the grain filling and the milk stage of rice production.

Further, the application method of the selenium-increasing and cadmium-reducing compound agent specifically comprises the following steps: 100ml of the fertilizer is applied to each mu each time, and the fertilizer is sprayed by diluting 200 times and 300 times.

Further, the spraying method comprises the following steps: spraying the mixture on the front and back surfaces of the rice leaves by a sprayer until the mixture drips.

Further, the administration time is 10 am or 4 pm.

Furthermore, the amino acids in the selenium-increasing and cadmium-reducing complexing agent are glycine and glutamic acid; the vitamins are B vitamins and vitamin C; the auxin is tryptophan and indoleacetic acid; the active enzyme substances comprise protease, cellulase and short peptidase; the auxiliary agent is humic acid; the total number of viable bacteria of the bacillus and the lactobacillus plantarum is more than or equal to 20 hundred million/g.

Preferably, the mass ratio of the vitamins to the auxin in the selenium-increasing and cadmium-reducing compound is 1: 1-3.

Preferably, the mass ratio of protease, cellulase and short peptidase in the active enzyme substances in the selenium-increasing and cadmium-reducing complexing agent is 1-2:1-2: 1-2.

Preferably, the viable count ratio of the bacillus to the lactobacillus plantarum in the selenium-increasing and cadmium-reducing complexing agent is 5-10: 1.

Compared with the prior art, the invention has the following beneficial effects:

the selenium-increasing cadmium-reducing complexing agent is prepared by compounding multiple trace elements and power factors required by growth of plants such as selenium, zinc, boron and the like, adding beneficial bacteria and synergistic bacteria in a special proportion, combining protein, amino acid, organic matters and bioactive substances such as brassinolide, zeatin and the like, and performing complexing and chelating reactions. The selenium-increasing and cadmium-reducing compound is used in any one or more of the late tillering stage, the filling stage and the milk maturing stage of rice planting, and the effect of the compound can be maximized through specific parameters such as application amount, application method and application time, the content of organic selenium in rice can be obviously improved, cadmium compounds can be degraded, the growth of rice plants can be promoted, the drought resistance, cold resistance and stress resistance of rice can be enhanced, and the selenium-increasing and cadmium-reducing effect after the rice is applied can be realized.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The bacillus and lactobacillus plantarum used in the following examples were purchased from amss biotechnology limited of beijing century, and other materials were purchased from conventional sources.

Preparation example

The preparation method of the selenium-increasing cadmium-reducing complexing agent specifically comprises the following steps:

(1) crushing sodium selenite, zinc sulfate, magnesium sulfate, Sule boron and potassium dihydrogen phosphate, and sieving with a 400-mesh sieve to obtain a mixture A;

(2) adding protein, organic matters, brassinolide and zeatin into the mixture A, and performing a complex reaction at a constant temperature of 60 ℃ to obtain a mixture B;

(3) adding amino acid, vitamin + auxin, total sugar, active enzyme, auxiliary agent, bacillus and lactobacillus plantarum into the mixture B, and carrying out chelation reaction at the constant temperature of 60 ℃ to obtain a primary product;

(4) and preparing the primary product into a supersaturated solution to obtain the selenium-increasing and cadmium-reducing complexing agent.