Slow-release fertilizer special for ecological wheat and preparation method thereof

A long-acting fertilizer, wheat technology, applied in the application, nitrogen fertilizer, potassium fertilizer and other directions, can solve the problems of difficult degradation of coating materials, limited large-scale use, and expensive coated fertilizers, achieve good film formation, avoid premature aging and dehydration. Fertilizer, the effect of increasing compressive strength

Inactive Publication Date: 2017-02-01
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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  • Slow-release fertilizer special for ecological wheat and preparation method thereof
  • Slow-release fertilizer special for ecological wheat and preparation method thereof
  • Slow-release fertilizer special for ecological wheat and preparation method thereof

Examples

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Effect test

Embodiment 1

[0026] In the present embodiment, a special long-acting fertilizer for ecological wheat comprises the following raw materials by weight percentage: urea 15%, monoammonium phosphate 32%, potassium chloride 19%, ammonium phosphorus 10%, phosphoric acid 3%, liquid ammonia 3% %, concentrated sulfuric acid 2%, modified cassava flour 10%, fertilizer synergist 0.5%, trace element fertilizer 4.5%, auxiliary materials 1%;

[0027] Wherein, the trace element fertilizer is composed of ammonium molybdate, zinc sulfate, borax, and the auxiliary material is composed of bentonite, attapulgite and zeolite powder;

[0028] The preparation method of the modified cassava flour comprises: adding water to the cassava flour and raising the temperature to 50° C., stirring to form a paste, adding ferrous sulfate and stirring evenly, then adding hydrogen peroxide with a content of 32 wt % dropwise, and completing the dropwise addition within 5 minutes. Insulate and stir evenly, add sodium hydroxide so...

Embodiment 2

[0036] In the present embodiment, a special long-acting fertilizer for ecological wheat comprises the following raw materials by weight percentage: urea 20%, monoammonium phosphate 32%, potassium chloride 19%, ammonium phosphorus 10%, phosphoric acid 1%, liquid ammonia 3% %, concentrated sulfuric acid 1%, modified cassava flour 5%, fertilizer synergist 0.5%, manganese sulfate 1%, ferrous sulfate 0.5%, borax 1%, zinc sulfate 1%, zeolite powder 5%;

[0037] Wherein, the preparation method of the modified cassava flour comprises: adding water to the cassava flour and raising the temperature to 55° C., stirring to form a paste, adding ferrous sulfate and stirring evenly, and then adding hydrogen peroxide with a content of 28 wt % dropwise, and the dripping is completed within 10 minutes. Add, keep warm and stir evenly, add sodium hydroxide solution with a content of 30wt%, adjust the pH to 12, stir and react at a constant temperature for 30 minutes, then add caustic soda, alkalize ...

Embodiment 3

[0044] In this embodiment, a special long-acting fertilizer for ecological wheat comprises the following raw materials by weight percentage: 15% urea, 36% monoammonium phosphate, 17% potassium chloride, 8% phosphorus ammonium nitrate, 1% phosphoric acid, 5% liquid ammonia %, concentrated sulfuric acid 3%, modified cassava flour 4%, fertilizer synergist 0.4%, trace element fertilizer 3.6%, auxiliary materials 7%;

[0045] Wherein, the trace element fertilizer is composed of magnesium sulfate, manganese sulfate, ferrous sulfate, zinc sulfate; the auxiliary material is composed of kaolin and diatomaceous earth;

[0046] The preparation method of the modified cassava flour comprises: adding water to the cassava flour and raising the temperature to 52° C., stirring to form a paste, adding ferrous sulfate and stirring evenly, then adding hydrogen peroxide with a content of 30 wt % dropwise, and completing the dropwise addition within 7 minutes. Insulate and stir evenly, add sodium h...

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Abstract

The invention discloses a slow-release fertilizer special for ecological wheat and a preparation method thereof. The slow-release fertilizer special for ecological wheat is prepared from, by weight, 15-22% of urea, 28-36% of monoammonium phosphate, 17-24% of potassium chloride, 8-14 % of ammonium nitrate phosphate, 1-3% of phosphoric acid, 2-5% of liquid ammonia, 1-3% of concentrated sulfuric acid, 4-10% of modified tapioca flour, 0.2-0.5% of fertilizer synergist, 3-5% of microelement fertilizer and 1-8% of auxiliaries. The slow-release fertilizer special for ecological wheat can supply sufficient nutrients to wheat, nutrient supply is lasting and coordinated, release of nutrient elements can be controlled, one-off fertilization can be achieved without topdressing, meanwhile, soil pollution cannot be caused, the quality of wheat is remarkably improved, and the yield of wheat is remarkably increased.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a special long-acting fertilizer for ecological wheat and a preparation method thereof. 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05B7/00C05G3/00C05G5/12C05G5/30C05B17/00C05C3/00C05C9/00C05D1/02C05D9/00C05D9/02C05F11/00C05G1/00C05D5/00
Inventor 金政辉董慧徐为宁宋先懿
Owner ANHUI SIERTE FERTILIZER IND
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