Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Compound type slow release fertilizer and preparing method thereof

A slow-release fertilizer and composite technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of inability to be absorbed by the soil, high nitrogen loss, easy ammonia volatilization, etc., achieve simple preparation methods, slow down soil damage, The effect of high absorption rate

Active Publication Date: 2014-07-09
BEIJING KINGTEC
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nitrogen is the most important nutrient element for crop growth. Urea is the most important variety of nitrogen fertilizer. Urea is suitable for all crops and all soils. It can be used as base fertilizer and topdressing fertilizer. It can be applied in both dry and paddy fields. However, urea is a molecule before transformation. In the state, it cannot be absorbed by the soil and is lost with water. The ammonia formed after transformation is also volatile. The loss of nitrogen in the soil is too high, the utilization rate is only 30%-40%, and the fertilizer effect period is only about 50 days. Waste also brings enormous pressure to the atmospheric environment and water environment, and is a serious non-point source of pollution.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Example 1: Composite slow-release fertilizer, the weight parts of its raw materials are: 50 parts of urea, 10 parts of cellulose, 15 parts of bran, 3 parts of water-retaining agent, 1 part of sawdust, 10 parts of straw ash, 5 parts of ammonium phosphate, 3 parts of calcium powder 2 parts of potassium sulfate, 5 parts of attapulgite, 5 parts of borax, 3 parts of ferrous sulfate, 3 parts of yeast microbial fertilizer, 3 parts of nitrogen-fixing bacteria fertilizer and 3 parts of talcum powder.

[0010] The preparation method of described composite slow-release fertilizer, comprises the following steps:

[0011] Weigh each raw material according to the weight of the constituent raw materials, pulverize it, put it into a fermentation tank, add water until the water content of the material is 40-50%, blow air and stir at the same time, and dry the fermented mixture at a low temperature of 30-40°C. Make the water content at 8-10%, and finally granulate to obtain a compound s...

Embodiment 2

[0012] Example 2: Composite slow-release fertilizer, the weight parts of its raw materials are: 60 parts of urea, 20 parts of cellulose, 25 parts of bran, 8 parts of water-retaining agent, 2 parts of sawdust, 15 parts of straw ash, 10 parts of ammonium phosphate, 5 parts of calcium powder 5 parts of potassium sulfate, 15 parts of attapulgite, 10 parts of borax, 8 parts of ferrous sulfate, 5 parts of yeast microbial fertilizer, 5 parts of nitrogen-fixing bacteria fertilizer and 5 parts of talcum powder.

[0013] The preparation method of compound slow-release fertilizer comprises the following steps:

[0014] Weigh each raw material according to the weight of the constituent raw materials, crush them, and put them into the fermentation tank. The attapulgite is added in the form of mud spraying to increase water retention, and water is added until the water content of the material is 40-50%. At the same time, blasting and stirring are carried out. Dry the fermented mixture at ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a composite slow-release fertilizer and a preparation method thereof, which mainly comprises raw materials such as urea, cellulose, bran, water-retaining agent, sawdust, straw ash, polypropylene alcohol, ammonium phosphate, calcium powder, and potassium sulfate It is obtained by mixing and fermenting attapulgite, borax, ferrous sulfate, yeast microbial fertilizer, nitrogen-fixing bacteria fertilizer and talcum powder according to certain weight parts. The preparation method of the present invention is simple, and the prepared compound slow-release fertilizer can effectively provide crops with lodging resistance, disease resistance and drought resistance, and has a high absorption rate of crops, and at the same time improves the utilization rate of fertilizers, and correspondingly reduces soil damage. slowed down.

Description

technical field [0001] The invention relates to the field of organic fertilizer manufacturing, in particular to a composite slow-release fertilizer and a preparation method thereof. Background technique [0002] Nitrogen is the most important nutrient element for crop growth. Urea is the most important variety of nitrogen fertilizer. Urea is suitable for all crops and all soils. It can be used as base fertilizer and topdressing fertilizer. It can be applied in both dry and paddy fields. However, urea is a molecule before transformation. In the state, it cannot be absorbed by the soil and is lost with water. The ammonia formed after transformation is also volatile. The loss of nitrogen in the soil is too high, the utilization rate is only 30%-40%, and the fertilizer effect period is only about 50 days. Waste also brings enormous pressure to the atmospheric environment and water environment, and is a serious non-point source pollution source. Contents of the invention [00...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
Inventor 杨红兵陈金华刘俊秋
Owner BEIJING KINGTEC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com