Catechol-containing polyurethane coated slow release compound fertilizer

A technology of coated slow-release and compound fertilizers, which is applied in fertilizer mixtures, fertilization devices, applications, etc., can solve the problems of mismatched crop growth requirements, unsatisfactory slow-release effects, and difficulty in meeting different needs, etc., to achieve improvement The effects of single nutrient fixation, improved stress resistance, and excellent coating slow-release control ability

Inactive Publication Date: 2014-10-22
HEFEI CHANGRUN AGRI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing slow-release compound fertilizers still have certain shortcomings, mainly in that the nutrient ratio is relatively fixed, and it is difficult to meet the different needs of various soils and various crops; the slow-release effect is not satisfactory, and does not match the growth needs of crops , thereby reducing fertilizer efficiency, affecting crop growth, resulting in reduced production and income

Method used

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Effect test

Embodiment

[0013] The compound fertilizer of this embodiment is made from the following raw materials in parts by weight (kg): 15 diatomites of 1250 mesh, 9 tofu wastewater, 15 phosphorus pentoxide, 6 sodium polyaspartate, 22 decomposed fertilizers, and 22 decomposed traditional Chinese medicines. Residue 12, ammonium bicarbonate 18, ferrous sulfate 4, phosphogypsum 13, methionine 3, rice bran 18, catechol 4, acetylcholine 2, sodium nitrophenolate 0.2, palm oil modified water-based polyurethane emulsion 25, glue Lithium magnesium silicate 5, auxiliary agent 5; auxiliary agent is made of the following raw materials by weight: poultry feather 15, nano carbon 2, 30% sulfuric acid solution 40, palm oil 10, Tween 60 4, diatomite 32 , an appropriate amount of magnesium carbonate, 1 copper citrate, 1 manganese citrate, and 1 zinc citrate. The preparation method is: first wash the poultry feathers with water, sterilize them at high temperature, and then pulverize them, put them into sulfuric acid...

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Abstract

The invention relates to the field of compound fertilizers, and in particular relates to a catechol-containing polyurethane coated slow release compound fertilizer which comprises the following raw materials by weight: 10-15 parts of 1250-2000 mesh diatomite, 6-9 parts of bean curd wastewater, 12-15 parts of phosphorus pentoxide, 6-8 parts of sodium poly aspartate, 20-22 parts of rotten porch fertilizer,, 10-12 parts of rotten Chinese medicine residue, 15-18 parts of ammonium hydrogen carbonate, 2-4 parts of ferrous sulfate, 12-15 parts of phosphogypsum, 2-3 parts of methionine, 16-18 parts of rice chaff, 2-4 parts of catechol, 1-3 parts of acetylcholine, 0.1-0.2 part of sodium nitrophenolate, 20-25 parts of palm oil modified waterborne polyurethane emulsion, 3-5 parts of colloidal lithium magnesium silicate and 4-5 parts of auxiliaries; the catechol-containing polyurethane coated slow release compound fertilizer is extensive in raw material sources, multi-nutrient, and nutrient-rich, nutrients are doubly coated by the diatomite and a slow release coating agent in the production process, the fertilizer efficiency is long-lasting, crop resistance is strong, incidence of pests diseases and insect pests is low, and yield and quality are promoted.

Description

technical field [0001] The invention relates to the field of compound fertilizers, in particular to a polyurethane-coated slow-release compound fertilizer containing catechol. Background technique [0002] In modern agricultural production, compound fertilizer can be seen everywhere. It has the advantages of high nutrient content, less auxiliary components, high fertilizer utilization rate, and convenient storage and application. It plays an important role in promoting high and stable crop yields. Slow-release compound fertilizer is an important category of compound fertilizers, and it is also the focus of research on the development of my country's chemical fertilizer industry. Its slow-release principle is to coat a thin layer of hydrophobic substances on the surface of fertilizer particles, so that the internal nutrients are slowly released to the In the soil, nutrients are continuously supplied to crops, which effectively improves the utilization rate of fertilizers. How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
Inventor 陈灿
Owner HEFEI CHANGRUN AGRI TECH
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