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Method for preparing coated paddy rice fertilizers with reduced costs

A technology of coating and rice, which is applied in the field of preparation of coated fertilizers for rice, can solve the problems of not easy to degrade, increase the burden on the soil, and high cost of coating materials, and achieve the effects of excellent adsorption capacity, improved soil physical and chemical properties, and reduced loss

Inactive Publication Date: 2018-05-29
ANHUI SIERTE FERTILIZER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating material of the existing coated fertilizer is not easy to degrade. Although it can improve the utilization rate of nutrients, it indirectly increases the burden on the soil, and the cost of the coating material is high, so it needs to be solved urgently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing coated fertilizer for rice with reduced cost, comprising the steps of:

[0020] S1. Mix 70kg of ammonium nitrate, 50kg of phosphate rock powder, 20kg of potassium nitrate, 4kg of borax, 4kg of coconut shell charcoal, 4kg of lime powder, 2kg of zeolite powder, and 4kg of dolomite powder, pass through a 100-mesh sieve, and granulate. Spray into 4kg sodium alginate compound and carry out coating to obtain prefabricated material;

[0021] The sodium alginate compound is prepared by the following process: mix 2kg of sodium alginate, 20kg of sodium sulfate, and 60kg of water evenly, and drop them into 400kg of a stirred 11wt% calcium chloride solution through a pinhole with a diameter of 0.2mm. After the addition is complete, continue to stir for 4 hours, filter and wash, add 2kg of sodium hydroxide and 80kg of epichlorohydrin, heat up to 55°C and stir for 5 hours, cool, filter and wash to obtain a sodium alginate complex;

[0022] S2, mix 40kg decompo...

Embodiment 2

[0024] A method for preparing coated fertilizer for rice with reduced cost, comprising the steps of:

[0025] S1. Mix 90kg of ammonium nitrate, 40kg of phosphate rock powder, 40kg of potassium nitrate, 2kg of borax, 8kg of coconut shell charcoal, 2kg of lime powder, 4kg of zeolite powder, and 2kg of dolomite powder, pass through a 200-mesh sieve, and granulate. Spray into 2kg sodium alginate compound and carry out coating to obtain prefabricated material;

[0026] The sodium alginate complex is prepared by the following process: mix 6kg sodium alginate, 10kg sodium sulfate, and 100kg water evenly, and drop them into 300kg of a 14wt% calcium chloride solution in a stirring state through a pinhole with a diameter of 0.2mm. After the addition is complete, continue to stir for 2 hours, filter and wash, add 4kg of sodium hydroxide and 60kg of epichlorohydrin, heat up to 62°C and stir for 3 hours, cool, filter and wash to obtain a sodium alginate complex;

[0027] S2, mix 60kg deco...

Embodiment 3

[0029] A method for preparing coated fertilizer for rice with reduced cost, comprising the steps of:

[0030] S1, mix 75kg ammonium nitrate, 48kg phosphate rock powder, 25kg potassium nitrate, 3.5kg borax, 5kg coconut shell charcoal, 3.5kg lime powder, 2.5kg zeolite powder, 3.5kg dolomite powder, cross 120 mesh sieve, granulate, During the granulation process, spray 3.5kg of sodium alginate compound for coating to obtain prefabricated material;

[0031] The sodium alginate complex is prepared by the following process: mix 3kg of sodium alginate, 18kg of sodium sulfate, and 70kg of water evenly, and drop them into 370kg of a 12wt% calcium chloride solution in a stirring state through a pinhole with a diameter of 0.2mm. After the addition is complete, continue to stir for 3.5 hours, filter and wash, add 2.5kg of sodium hydroxide and 75kg of epichlorohydrin, heat up to 58°C and stir for 4.5 hours, cool, filter and wash to obtain the sodium alginate complex;

[0032] S2. Mix 45kg...

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PUM

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Abstract

The invention discloses a method for preparing coated paddy rice fertilizers with reduced costs. The method includes steps of uniformly mixing ammonium nitrate, phosphorite powder, potassium nitrate,borax, coconut shell charcoal, lime powder, zeolite powder and dolomite powder with one another to obtain mixtures, sieving and granulating the mixtures and spraying sodium alginate compounds to coatthe mixtures in granulation procedures so as to obtain prefabricated materials; uniformly mixing thoroughly decomposed chicken manure, peanut hull powder, grass peat soil, sweet potato flour, wollastonite powder, zinc sulfate, manganese sulfate and brassinolide with one another to obtain first mixtures, adding the prefabricated materials into the first mixtures to obtain second mixtures, preheating and heating the second mixtures, spraying rapeseed meal on the second mixtures, adding mica powder into the second mixtures, continuing to stir the mica powder and the second mixtures and carrying out air drying to obtain the coated paddy rice fertilizers with the reduced costs. The method has the advantages that paddy rice can comprehensively absorb nutrients in a balanced manner by the aid ofthe coated paddy rice fertilizers, accordingly, the quality of the paddy rice can be improved, and the yield of the paddy rice can be increased; the physical and chemical properties of soil can be improved, the soil fertility can be fertilized, nutrient requirements of the paddy rice in integral growth periods can be met; furthermore, the method has the advantages of labor-saving, time-saving, high fertilizer utilization rate, and the like.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a method for preparing coated rice fertilizers with reduced costs. Background technique [0002] Coated fertilizers, also known as coated fertilizers and film fertilizers, are fertilizers made of quick-acting fertilizer particles wrapped with semi-permeable or impermeable film substances. Film-forming substances include plastics, resins, polyethylene, etc. The purpose of the coating is to slowly release the quick-acting nutrients in the coated fertilizer after it is applied to the soil, so as to prolong the fertilizer effect. The coating material of the existing coated fertilizer is not easy to degrade. Although it can improve the utilization rate of nutrients, it indirectly increases the burden on the soil, and the cost of the coating material is high, which needs to be solved urgently. Contents of the invention [0003] Based on the technical problems existing in the ba...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/08C05G3/80C05G3/90
CPCC05B17/00C05G3/00C05G3/80C05G3/90C05C1/00C05C5/02C05D3/00C05D3/02C05D9/00C05D9/02C05F3/00C05F5/002C05F11/00C05F11/02C05F11/10Y02A40/22Y02P60/21
Inventor 金政辉甘家军胡海徐为宁杨友坤杨希
Owner ANHUI SIERTE FERTILIZER IND
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