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Special silicon containing compound fertilizer for paddy and preparation method of said fertilizer

A compound fertilizer and rice technology, applied in the direction of urea compound fertilizer, nitrogen fertilizer, application, etc., can solve problems such as negative impact on soil, achieve the effects of reducing labor costs, protecting the environment, and improving lodging resistance

Active Publication Date: 2015-02-25
SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the more mature resin coating and sulfur coating will have a certain negative impact on the soil

Method used

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  • Special silicon containing compound fertilizer for paddy and preparation method of said fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 7 parts by weight of urea granules to the coating pan, make it rotate at a constant speed of 20 rpm, spray 0.005 parts by weight of dilute sulfuric acid (mass concentration of 2%) on the surface of the urea to make the urea wet; add to the urea 0.05 parts by weight of magnesium oxide powder, uniformly attached to the surface of the urea; add 2.95 parts of 200-400 mesh slag powder with an effective silicon content of 30% to the urea, and keep the coating pot rotating at a constant speed until the slag powder is completely wrapped on the surface of the urea, and the result will be The fertilizer is dried to obtain coated slow-release urea.

[0024] The above-prepared coated sustained-release urea, commercially available diamine phosphate and commercially available 60% red potassium according to 1:

[0025] 0.33:0.49 by weight ratio to obtain silicon-containing slow-release compound fertilizer special for rice, in which the total nutrient content is 45.4%, and slow-release ...

Embodiment 2

[0027] Add 6 parts by weight of urea granules to the coating pan, make it rotate at a constant speed of 20 rpm, spray 0.0006 parts by weight of polyvinyl alcohol on the surface of the urea to make the urea wet; add 1.4 parts by weight of attapulgite powder to the urea , Uniformly adhere to the surface of urea; add 2.4 parts of 200-400 mesh steel slag composite powder with 20% effective silicon content to urea, and keep the coating pot rotating at a constant speed until the steel slag composite powder is completely wrapped on the surface of urea, and the obtained fertilizer After drying, the coated sustained-release urea is obtained.

[0028] The prepared coated slow-release urea, commercially available diamine phosphate, and commercially available 60% red potassium were mixed in a weight ratio of 1:0.22:0.54 to obtain a silicon-containing slow-release compound fertilizer for rice, in which the total nutrient content was 42.8 %, slow-release nitrogen fertilizer accounts for 56.8% ...

Embodiment 3

[0030] The preparation of coated sustained-release urea is the same as in Example 2.

[0031] Coated slow-release urea, commercially available diamine phosphate, and commercially available 60% red potassium were mixed in a ratio of 1:0.35:0.51 to obtain a silicon-containing slow-release compound fertilizer special for rice. The total nutrient content is 43.2%, slow-release Nitrogen fertilizer accounts for 53.8% of which N, P 2 O 5 And K 2 The content of O is 18.2%, 8.5% and 16.5%, and the effective silicon content is 2.6%.

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Abstract

The invention relates to the technical field of fertilizers, in particular to special silicon containing compound fertilizer for paddy and a preparation method of said fertilizer. The silicon containing compound fertilizer is prepared by mixing envelope slow-release urea with phosphatic fertilizer and potash fertilizer. The envelope slow-release urea is composed of a solid ball and an envelope layer wrapping the solid ball, the solid ball is the urea, and the envelope layer is mixture of silicon-calcium-magnesium fertilizer and binder. The total nutrient and the effective silicon content are 42-50% and 2-5% respectively in the silicon-containing compound fertilizer, and the mass ratio of N to P2O5 to K2O is 1:0.3-0.6:0.7-1. The special silicon containing compound fertilizer for paddy can meet needs of many elements for growth of the paddy, and in particular with remarkable increase of silicon, resistance to lodging and diseases and insects can be improved. By wrapping the urea to realize slow release, utilization rate of nitrogen fertilizer is increased, fertilizing times is decreased and labor cost is reduced. The preparation method is simple in preparation and controllable in processes, and raw materials for preparation can be easily obtained.

Description

Technical field [0001] The invention relates to the technical field of fertilizers, in particular to a silicon-containing compound fertilizer special for rice and a preparation method thereof. Background technique [0002] The growth process of rice has a great demand for silicon. For a long time, people have paid attention to the application of nitrogen, phosphorus, and potassium fertilizers and neglected the supplement of available silicon in the soil. More than half of the cultivated land in the country lacks silicon and needs to be supplemented with effective silicon. , Silicon fertilizer includes water-soluble silicon fertilizer and citric-soluble silicon fertilizer. Water-soluble silicon fertilizer is generally chemically synthesized at high temperature and has a higher price. The citric-soluble silicon fertilizer is mainly processed from ore, metallurgical slag, fly ash, etc. The price is relatively low and users are more acceptable. [0003] During the application of nitro...

Claims

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Application Information

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IPC IPC(8): C05G3/00
CPCC05C9/00C05G3/90C05G5/30
Inventor 周维杨益善康明顾文飞徐莉谢群秦玉敏唐欧靖宋春芳陆瑛管玉萍陆定扬
Owner SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS
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