Environment-friendly coated slow-release fertilizer for wheat

An environmentally friendly, coated and slow-release technology, which is applied in the direction of layered/coated fertilizers, nitrogen fertilizers, and potassium fertilizers, can solve the problems of difficult degradation of coated materials, restrictions on large-scale use, and expensive coated fertilizers. Absorb, improve soil nutrient status, prevent premature aging and defertilization effect

Inactive Publication Date: 2017-01-11
ANHUI SIERTE FERTILIZER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In response to these problems, a variety of coated slow-release fertilizers have been developed at home and abroad. Although the release of nutrient elements can be controlled to a certain extent, these coating materials are generally difficult to degrade by themselves, causing soil pollution and expensive price restrictions for coated fertilizers. its large-scale use

Method used

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  • Environment-friendly coated slow-release fertilizer for wheat

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] In this embodiment, an environment-friendly coated slow-release wheat fertilizer comprises the following raw materials by weight percentage: 15% urea, 34% monoammonium phosphate, 16% potassium chloride, 12% ammonium phosphorus nitrate, and 1% ammonium sulfate , potassium sulfate 3%, organic fertilizer 5%, trace element fertilizer 5%, 2-chloro-6-trichloromethylpyridine 0.1%, modified cassava flour 6.9%, kaolin 2%;

[0027]Wherein, the preparation method of the modified cassava flour comprises: adding water to the cassava flour and raising the temperature to 50°C, stirring until a paste is formed, adding ferrous sulfate and stirring evenly, adding hydrogen peroxide with a content of 32% dropwise, and completing the dripping within 5 minutes. Add, stir evenly, then add 35% sodium hydroxide solution, adjust the pH to 10, stir and react at a constant temperature for 1 hour to obtain gelatinized cassava flour; add polyvinyl alcohol and stir evenly, heat up to 90°C, and keep wa...

Embodiment 2

[0034] In this embodiment, an environmentally friendly coated slow-release wheat fertilizer comprises the following raw materials by weight percentage: 22% urea, 26% monoammonium phosphate, 16% potassium chloride, 6% ammonium nitrate, and 5% ammonium sulfate , potassium sulfate 1%, organic fertilizer 15%, trace element fertilizer 2%, n-butyl thiophosphoric triamide 0.5%, modified cassava flour 4%, diatomaceous earth 2.5%;

[0035] Wherein, the preparation method of the modified cassava flour comprises: adding water to the cassava flour and raising the temperature to 55° C., stirring until a paste is formed, adding ferrous sulfate and stirring evenly, adding hydrogen peroxide with a content of 28% dropwise, and completing the dripping within 10 minutes. Add, stir evenly, then add 30% sodium hydroxide solution, adjust the pH to 12, stir and react at a constant temperature for 0.5h to obtain gelatinized cassava flour; add polyvinyl alcohol and stir evenly, heat up to 95°C, and kee...

Embodiment 3

[0042] In this embodiment, an environmentally friendly coated slow-release wheat fertilizer comprises the following raw materials by weight percentage: 15% urea, 26% monoammonium phosphate, 23% potassium chloride, 9% ammonium nitrate, and 3% ammonium sulfate , potassium sulfate 2%, organic fertilizer 6%, trace element fertilizer 3.5%, tetraclopyridine carboxylic acid 0.5%, modified cassava flour 10%, zeolite powder 2%;

[0043] Wherein, the preparation method of the modified cassava flour comprises: adding water to the cassava flour and raising the temperature to 53° C., stirring until a paste is formed, adding ferrous sulfate and stirring evenly, adding 30% hydrogen peroxide dropwise, and completing the dripping within 7 minutes. Add, stir evenly, then add sodium hydroxide solution with a content of 33%, adjust the pH to 11, stir and react at a constant temperature for 0.7h, and obtain gelatinized cassava flour; add polyvinyl alcohol and stir evenly, heat up to 92°C, and keep ...

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Abstract

The invention discloses an environment-friendly coated slow-release fertilizer for wheat. The environment-friendly coated slow-release fertilizer is prepared from raw materials in percentage by weight as follows: 15%-22% of urea, 26%-34% of monoammonium phosphate, 16%-23% of potassium chloride, 6%-12% of ammonium nitrate phosphorus, 1%-5% of ammonium sulfate, 1%-3% of potassium sulfate, 5%-15% of an organic fertilizer, 2%-5% of a microelement fertilizer, 0.1%-0.5% of a chemical fertilizer synergist, 4%-10% of modified tapioca flour and 2%-8% of an auxiliary. The environment-friendly coated slow-release fertilizer for the wheat can sufficiently supply nutrients to the wheat, nutrient supply is lasting and coordinating, release of nutrient elements can be controlled, the fertilizer can be applied once without topdressing, meanwhile, soil pollution cannot be caused, and the quality and the yield of wheat are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to an environmentally friendly coated slow-release wheat fertilizer. Background technique [0002] Wheat is one of the most important food crops in the world. It is rich in starch, protein and fat, and is also an important source of energy for the human body. About one-third of the world's population uses wheat as a staple food. Countries with high wheat yield per unit area in the world include France, Germany, the United Kingdom, the Netherlands, Denmark, etc., with a yield level of 6500-8200kg.hm2, which is about 2.5-3.0% of the world's average yield times. [0003] In my country, wheat is the second largest food crop after rice. According to the region and production layout, the main production areas are divided into northeast spring wheat area, northwest wheat area, north China winter wheat area, winter wheat area in the middle and lower reaches of the Yangtze River and sou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/00C05G3/80
CPCC05B7/00C05G3/00C05G3/80C05G5/30C05B17/00C05C3/00C05C9/00C05D1/02C05D9/00C05D9/02C05F5/002C05F5/006C05F11/00C05F11/02C05D5/00
Inventor 金政辉董慧徐为宁宋先懿
Owner ANHUI SIERTE FERTILIZER IND
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