阅读说明：本技术 一种土壤增肥用磷钾复合肥及其制备方法 (Phosphorus-potassium compound fertilizer for soil fertility improvement and preparation method thereof ) 是由 刘云 文阳平 韩建龙 刘君 左思佳 于 2020-07-15 设计创作，主要内容包括：本发明公开了一种土壤增肥用磷钾复合肥,该磷钾复合肥包括以下重量份的原料：150-200份的磷酸二氢钾、8-12份的尿素、1-2份的硫酸铜、1-2份的硫酸锌、10-20份的磷酸一铵、8-10份的过磷酸钙、2-4份的聚乙烯醇、5-10份的木薯淀粉、7-9份的硅藻土、6-8份的硼砂、20-30份的膨润土。本产品的主要成分是磷酸二氢钾,且不含氯元素,其中磷酸二氢钾的盐度值极低,是理想的叶面施用肥料,且其施用量少,能广泛用于浸种、浸根药物拌种、浇灌和叶面喷施,对农作物加速灌浆、促进代谢、抵御干热风及抗旱、抗寒、防止倒伏等方面均有显著效果。(The invention discloses a phosphorus-potassium compound fertilizer for soil fertility improvement, which comprises the following raw materials in parts by weight: 150-200 parts of monopotassium phosphate, 8-12 parts of urea, 1-2 parts of copper sulfate, 1-2 parts of zinc sulfate, 10-20 parts of monoammonium phosphate, 8-10 parts of calcium superphosphate, 2-4 parts of polyvinyl alcohol, 5-10 parts of cassava starch, 7-9 parts of diatomite, 6-8 parts of borax and 20-30 parts of bentonite. The main component of the product is monopotassium phosphate which does not contain chlorine, wherein the salinity value of the monopotassium phosphate is extremely low, the fertilizer is an ideal foliar application fertilizer, the application amount is small, the fertilizer can be widely used for seed soaking, root soaking, drug seed dressing, irrigation and foliar spraying, and the fertilizer has obvious effects on the aspects of accelerating grouting of crops, promoting metabolism, resisting dry and hot wind, resisting drought, resisting cold, preventing lodging and the like.)

1. The phosphorus-potassium compound fertilizer for soil fertility improvement is characterized by comprising the following raw materials in parts by weight: 150-200 parts of monopotassium phosphate, 8-12 parts of urea, 1-2 parts of copper sulfate, 1-2 parts of zinc sulfate, 10-20 parts of monoammonium phosphate, 8-10 parts of calcium superphosphate, 2-4 parts of polyvinyl alcohol, 5-10 parts of cassava starch, 7-9 parts of diatomite, 6-8 parts of borax and 20-30 parts of bentonite.

2. The phosphorus-potassium compound fertilizer for soil fertility improvement according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 190 parts of 170-190 parts of monopotassium phosphate, 9-11 parts of urea, 1.2-1.8 parts of copper sulfate, 1.2-1.8 parts of zinc sulfate, 13-17 parts of monoammonium phosphate, 8.5-9.5 parts of calcium superphosphate, 2.5-3.5 parts of polyvinyl alcohol, 6-8 parts of cassava starch, 7.5-8.5 parts of diatomite, 6.5-7.5 parts of borax and 23-27 parts of bentonite.

3. The phosphorus-potassium compound fertilizer for soil fertility improvement according to claim 2, wherein the phosphorus-potassium compound fertilizer comprises the following raw materials in parts by weight: 180 parts of monopotassium phosphate, 10 parts of urea, 1.5 parts of copper sulfate, 1.5 parts of zinc sulfate, 15 parts of monoammonium phosphate, 9 parts of calcium superphosphate, 3 parts of polyvinyl alcohol, 7 parts of cassava starch, 8 parts of diatomite, 7 parts of borax and 25 parts of bentonite.

4. A method for preparing the phosphorus-potassium compound fertilizer for soil fertility improvement according to any one of claims 1 to 3, which is characterized by comprising the following steps:

1) respectively crushing 180 parts of monopotassium phosphate, 10 parts of urea, 1.5 parts of copper sulfate, 1.5 parts of zinc sulfate, 15 parts of monoammonium phosphate, 9 parts of calcium superphosphate, 3 parts of polyvinyl alcohol, 7 parts of cassava starch, 8 parts of diatomite and 7 parts of borax, then sieving the crushed materials with a 100-mesh sieve, adding the crushed materials into 1000 parts of water, and stirring the mixture at the temperature of 25-30 ℃ for 50-60 minutes to obtain a mixed solution;

2) distilling the mixed solution to obtain a wet compound fertilizer;

3) crushing 25 parts of bentonite, sieving the crushed bentonite with a 100-mesh sieve to obtain expansive soil powder, adding the expansive soil powder into the wet compound fertilizer, and stirring the mixture for 10 to 20 minutes at the temperature of between 25 and 30 ℃ to obtain a mixture;

4) and then, the mixture is sent to a granulator for granulation to obtain compound fertilizer particles, and the compound fertilizer particles are dried for 5-10 minutes at the temperature of 120-130 ℃ to obtain the phosphorus-potassium compound fertilizer for soil fertility.

5. The use method of the phosphorus-potassium compound fertilizer for soil fertility improvement according to any one of claims 1 to 3, characterized in that the use method of the phosphorus-potassium compound fertilizer comprises the following five steps:

1) and spraying: dissolving 1-3 parts by weight of phosphorus-potassium compound fertilizer for soil fertility into 1000 parts by weight of water to obtain mixed liquor A, spraying the mixed liquor A onto the leaf surfaces of crops, and spraying once every 9-11 days;

2) and carrying out flushing application: dissolving 1-3 parts by weight of phosphorus-potassium compound fertilizer for soil fertility into 1000 parts by weight of water to obtain a mixed solution B, and uniformly spraying the mixed solution B into 1 mu of soil;

3) and drip irrigation: dissolving 1-3 parts by weight of phosphorus-potassium compound fertilizer for soil fertility into 1000 parts by weight of water to obtain mixed solution C, and uniformly dripping the mixed solution C into soil with the size of 1 mu;

4) and seed soaking: dissolving 2 parts by weight of phosphorus-potassium compound fertilizer for soil fertility into 1000 parts by weight of water to obtain mixed solution D, placing seeds in the mixed solution D for soaking for 14-18 hours, and then fishing out the seeds, airing and sowing;

5) and seed dressing: dissolving 1 part by weight of phosphorus-potassium compound fertilizer for soil fertility into 100 parts by weight of water to obtain a mixed solution E, sprinkling the mixed solution E on seeds, uniformly stirring, airing the seeds, and then sowing.

Technical Field

The invention relates to a phosphorus-potassium compound fertilizer, in particular to a phosphorus-potassium compound fertilizer for soil fertility improvement and a preparation method thereof.

Background

When crops are planted on soil, different fertilizers are often applied to different crops in order to increase the yield of the crops, and the phosphorus-potassium compound fertilizer is a fertilizer with high use frequency. Most of the phosphorus-potassium compound fertilizers in the market need to be mixed for use, and the interior of the fertilizer contains a large amount of chlorine elements, so that the growth of crops can be influenced. In order to ensure that crops can grow smoothly, a phosphorus-potassium compound fertilizer for soil fertility improvement needs to be designed to meet the requirement.

Disclosure of Invention

The invention aims to provide a phosphorus-potassium compound fertilizer for soil fertility improvement and a preparation method thereof, and aims to solve the problems in the background art.

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

the phosphorus-potassium compound fertilizer for soil fertility improvement comprises the following raw materials in parts by weight: 150-200 parts of monopotassium phosphate, 8-12 parts of urea, 1-2 parts of copper sulfate, 1-2 parts of zinc sulfate, 10-20 parts of monoammonium phosphate, 8-10 parts of calcium superphosphate, 2-4 parts of polyvinyl alcohol, 5-10 parts of cassava starch, 7-9 parts of diatomite, 6-8 parts of borax and 20-30 parts of bentonite.

As a further scheme of the invention: the phosphorus-potassium compound fertilizer comprises the following raw materials in parts by weight: 190 parts of 170-190 parts of monopotassium phosphate, 9-11 parts of urea, 1.2-1.8 parts of copper sulfate, 1.2-1.8 parts of zinc sulfate, 13-17 parts of monoammonium phosphate, 8.5-9.5 parts of calcium superphosphate, 2.5-3.5 parts of polyvinyl alcohol, 6-8 parts of cassava starch, 7.5-8.5 parts of diatomite, 6.5-7.5 parts of borax and 23-27 parts of bentonite.

As a still further scheme of the invention: the phosphorus-potassium compound fertilizer comprises the following raw materials in parts by weight: 180 parts of monopotassium phosphate, 10 parts of urea, 1.5 parts of copper sulfate, 1.5 parts of zinc sulfate, 15 parts of monoammonium phosphate, 9 parts of calcium superphosphate, 3 parts of polyvinyl alcohol, 7 parts of cassava starch, 8 parts of diatomite, 7 parts of borax and 25 parts of bentonite.

As a still further scheme of the invention: the preparation method of the phosphorus-potassium compound fertilizer for soil fertility improvement comprises the following steps:

1) respectively crushing 180 parts of monopotassium phosphate, 10 parts of urea, 1.5 parts of copper sulfate, 1.5 parts of zinc sulfate, 15 parts of monoammonium phosphate, 9 parts of calcium superphosphate, 3 parts of polyvinyl alcohol, 7 parts of cassava starch, 8 parts of diatomite and 7 parts of borax, then sieving the crushed materials with a 100-mesh sieve, adding the crushed materials into 1000 parts of water, and stirring the mixture at the temperature of 25-30 ℃ for 50-60 minutes to obtain a mixed solution;

2) distilling the mixed solution to obtain a wet compound fertilizer;

3) crushing 25 parts of bentonite, sieving the crushed bentonite with a 100-mesh sieve to obtain expansive soil powder, adding the expansive soil powder into the wet compound fertilizer, and stirring the mixture for 10 to 20 minutes at the temperature of between 25 and 30 ℃ to obtain a mixture;

4) and then, the mixture is sent to a granulator for granulation to obtain compound fertilizer particles, and the compound fertilizer particles are dried for 5-10 minutes at the temperature of 120-130 ℃ to obtain the phosphorus-potassium compound fertilizer for soil fertility.

As a still further scheme of the invention: the application method of the phosphorus-potassium compound fertilizer for soil fertility improvement comprises the following five steps:

1) and spraying: dissolving 1-3 parts by weight of phosphorus-potassium compound fertilizer for soil fertility into 1000 parts by weight of water to obtain mixed liquor A, spraying the mixed liquor A onto the leaf surfaces of crops, and spraying once every 9-11 days;

2) and carrying out flushing application: dissolving 1-3 parts by weight of phosphorus-potassium compound fertilizer for soil fertility into 1000 parts by weight of water to obtain a mixed solution B, and uniformly spraying the mixed solution B into 1 mu of soil;

3) and drip irrigation: dissolving 1-3 parts by weight of phosphorus-potassium compound fertilizer for soil fertility into 1000 parts by weight of water to obtain mixed solution C, and uniformly dripping the mixed solution C into soil with the size of 1 mu;

4) and seed soaking: dissolving 2 parts by weight of phosphorus-potassium compound fertilizer for soil fertility into 1000 parts by weight of water to obtain mixed solution D, placing seeds in the mixed solution D for soaking for 14-18 hours, and then fishing out the seeds, airing and sowing;

5) and seed dressing: dissolving 1 part by weight of phosphorus-potassium compound fertilizer for soil fertility into 100 parts by weight of water to obtain a mixed solution E, sprinkling the mixed solution E on seeds, uniformly stirring, airing the seeds, and then sowing.

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

1. the product is a high-concentration chlorine-free phosphorus-potassium fertilizer, has high nutrition content, can simultaneously provide phosphorus and potassium, and is a non-toxic, harmless and residue-free green fertilizer;

2. the main component of the product is monopotassium phosphate, wherein the salinity value of the monopotassium phosphate is extremely low, the monopotassium phosphate is an ideal foliar application fertilizer, the application amount is small, the monopotassium phosphate can be widely used for seed soaking, root soaking, seed dressing, watering and foliar spraying, and the monopotassium phosphate has obvious effects on accelerating grouting of crops, promoting metabolism, resisting dry hot air, resisting drought, resisting cold, preventing lodging and the like;

3. the product has the characteristics of fungicide, has special effect on preventing and controlling crop diseases and insect pests, and can be used as a base fertilizer for crops or a foliar fertilizer for the middle and later periods of the crops;

4. after the product is applied, the crops show vigorous seedling, strong stems, large ears, increased dry grain weight and excellent quality, and the product is widely applicable to the crops, is suitable for rice, oranges, wheat, corn, sugarcane, soybean, cotton, flax, watermelons, cucumbers, grapes, pomelos, branches, longan, bananas and apples, melons and fruits, vegetables, tobacco and the like, and is particularly suitable for the tobacco and tea leaves and other chlorine-avoiding crops.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to specific embodiments.