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A kind of duplex controlled-release fertilizer used in alkaline soil and preparation method thereof

An industrial control and soil technology, which is applied in the field of crops, can solve the problems of reduced availability of soil element supply, etc., and achieve the effect of solving long-term contradictions in growth and development, low solubility, and reduced effectiveness

Inactive Publication Date: 2016-07-06
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, most soils are not lacking in various elements, especially trace elements, but the availability of soil element supply is reduced due to soil alkalinization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The preparation method of the duplex controlled-release fertilizer that described alkaline soil uses comprises the following steps:

[0024] Step 1, each component is weighed according to the mass percentage of each component;

[0025] Step 2, ferrous sulfate is coated with a thermosetting resin to obtain component 1, which is set aside;

[0026] Step 3, wrapping urea with sulfur and sealing it with microcrystalline wax to obtain component 2, which is set aside;

[0027] Step 4, put N, P 2 o 5 and K 2 O mixed evenly, and coated with a thermosetting resin to prepare component 3, set aside;

[0028] Step 5, mix component 1, component 2, component 3 and the binder and stir evenly, granulate, dry, cool, and sieve into granules, and select fertilizers with a particle size of 2-3mm, that is A duplex controlled-release fertilizer is obtained.

[0029] The binder is made of starch, dextrin polyvinyl alcohol, calcium oxide, wild chrysanthemum powder and carboxymethyl cellu...

Embodiment 1

[0031] A kind of duplex controlled-release fertilizer that alkaline soil uses, described controlled-release fertilizer is made of thermosetting resin, ferrous sulfate, sulfur, microcrystalline wax, urea, N, P 2 o 5 、K 2 O and binder, and the mass percentages of the components required for the preparation of duplex controlled-release fertilizers are: ferrous sulfate 12%, sulfur 1.7%, microcrystalline wax 0.2%, urea 8.1%, N15%, P 2 o 5 15%, K 2 O15%, adhesive 0.8%, and the balance is thermosetting resin.

[0032] The preparation method of the duplex controlled-release fertilizer that described alkaline soil uses comprises the following steps:

[0033] Step 1, each component is weighed according to the mass percentage of each component;

[0034] Step 2, ferrous sulfate is coated with a thermosetting resin to obtain component 1, which is set aside;

[0035] Step 3, wrapping urea with sulfur and sealing it with microcrystalline wax to obtain component 2, which is set aside; ...

Embodiment 2

[0040] A kind of duplex controlled-release fertilizer that alkaline soil uses, described controlled-release fertilizer is made of thermosetting resin, ferrous sulfate, sulfur, microcrystalline wax, urea, N, P 2 o 5 、K 2 O and binder, and the mass percentages of the components required for the preparation of duplex controlled-release fertilizers are: ferrous sulfate 12.75%, sulfur 1.7%, microcrystalline wax 0.2%, urea 8.1%, N15%, P 2 o 5 15%, K 2 O15%, binder 1.2%, and the balance is thermosetting resin.

[0041] The preparation method of the duplex controlled-release fertilizer that described alkaline soil uses comprises the following steps:

[0042] Step 1, each component is weighed according to the mass percentage of each component;

[0043] Step 2, ferrous sulfate is coated with a thermosetting resin to obtain component 1, which is set aside;

[0044] Step 3, wrapping urea with sulfur and sealing it with microcrystalline wax to obtain component 2, which is set aside;

...

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PUM

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Abstract

The invention belongs to the field of crops, and in particular relates to a duplex controlled-release fertilizer used in alkaline soil and a preparation method thereof. The controlled-release fertilizer is made of thermosetting resin, ferrous sulfate, sulfur, microcrystalline wax, urea, pure nitrogen, phosphorus pentoxide, potassium oxide and binder, and the components required for the preparation of duplex controlled-release fertilizer The mass percentages are: ferrous sulfate 12-12.75%, sulfur 1.7%, microcrystalline wax 0.2%, urea 8.1%, pure nitrogen 15%, phosphorus pentoxide 15%, potassium oxide 15%, binder 0.8-1.2 %, and the balance is thermosetting resin. The invention solves the contradiction between quick-acting and long-acting. Many plants germinate in spring and need a large amount of nitrogen fertilizer for vegetative growth. Sulfur-containing urea can quickly supply nitrogen fertilizer, and the supply of nitrogen tends to be consistent with the demand of plants; in the later stage of plant growth, after flowering and fruit setting, a large amount of phosphorus and potassium elements are needed. At this time, phosphorus Potassium fertilizer is released to meet the later needs.

Description

technical field [0001] The invention belongs to the field of crops, and in particular relates to a duplex controlled-release fertilizer used in alkaline soil and a preparation method thereof. Background technique [0002] There are various chemical and biochemical reactions in the soil, showing different acidity or alkalinity. In alkaline soil, soluble phosphorus is easy to combine with calcium to form insoluble phosphorus-calcium salts, which reduces the availability of phosphorus; at the same time, the availability of iron, zinc, molybdenum, manganese, boron and other elements in the soil is also greatly reduced, resulting in crops Nutrient elements are poor, and various physiological diseases such as phosphorus deficiency, iron deficiency, zinc deficiency, molybdenum deficiency, manganese deficiency, and boron deficiency occur, which endanger crop growth and production. [0003] The acidity and alkalinity of soil mainly depends on the amount of acid and alkali substances...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 王进涛杜爱玲丁琦
Owner HENAN UNIV OF SCI & TECH