Dedicated release-controlled compound fertilizer for double-season early rice and late rice and method for preparing same

A compound fertilizer and early rice technology, applied in the direction of urea compound fertilizer, application, nitrogen fertilizer, etc., can solve the problems of heavy labor, rice quality decline, high cost, etc., to reduce labor cost and operation time, reduce serious water and fertilizer loss, and improve rice quality and resistance effects

Inactive Publication Date: 2006-12-27
刘俊松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional early rice not only uses a lot of fertilizers, but also has high cost and heavy labor, and excessive application of inorganic fertilizers will cause soil compaction, fertilizer loss, environmental pollution and rice quality decline and other adverse effects
At the same time, large-scale use of single chemical fertilizers can easily lead to nutritional imbalance, easy lodging, and low resistance of rice.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method for special controlled-release compound fertilizer for double-cropping early rice and late rice, comprising the steps of:

[0034] 1). Prepare coated urea 40: (a) select granular urea with a diameter of 3-4mm, put it into a fluidized bed, and heat it to 60-80°C; The percentage by weight is 12, and the percentage by weight of urea in coating urea 40 is 88. Select coating 40 and urea; prepare coating 40: account for coating 40 weight percentage by each component: clay mineral: 58, biodegradable Resin: 39, active agent: 3 Select clay mineral, biodegradable resin and active agent; Dissolve biodegradable resin in tetrachloromethane and tetrachloroethane in the mixed solution that accounts for 1 / 2 weight each, mixed solution presses clay Minerals, biodegradable resin and active agent: the weight ratio of the mixed solution=8:90 is selected, add clay minerals, active agent is heated to 90-110 ℃, is 4KPa in the air atomization pressure with two-fluid nozzle...

Embodiment 2

[0042] A preparation method for special controlled-release compound fertilizer for double-cropping early rice and late rice, comprising the steps of:

[0043] 1). Prepare coated urea 40: (a) select granular urea with a diameter of 3-4mm, put it into a fluidized bed, and heat it to 60-80°C; The percentage by weight is 12, and the percentage by weight of urea in coating urea 40 is 88. Select coating 40 and urea; prepare coating 40: account for coating 40 weight percentage by each component: clay mineral: 58, biodegradable Resin: 39, active agent: 3 Select clay mineral, biodegradable resin and active agent; Dissolve biodegradable resin in tetrachloromethane and tetrachloroethane in the mixed solution that accounts for 1 / 2 weight each, mixed solution presses clay Minerals, biodegradable resin and active agent: the weight ratio of the mixed solution=9:90 is selected, add clay minerals, active agent is heated to 90-110 ℃, is 4KPa in the air atomization pressure with two-fluid nozzle...

Embodiment 3

[0050] A preparation method for special controlled-release compound fertilizer for double-cropping early rice and late rice, comprising the steps of:

[0051] 1). Prepare coated urea 40: (a) select granular urea with a diameter of 3-4mm, put it into a fluidized bed, and heat it to 60-80°C; The percentage by weight is 10, and the percentage by weight of the coating urea 40 accounted for by urea is 90 and the coating 40 and urea are selected; the coating 40 is prepared: the percentage by weight of each component of the coating 40 is: clay mineral: 54, biodegradable Resin: 42, active agent: 4 Select clay mineral, biodegradable resin and active agent; Dissolve biodegradable resin in tetrachloromethane and tetrachloroethane in the mixed solution that accounts for 1 / 2 weight each, mixed solution presses clay Minerals, biodegradable resin and active agent: the weight ratio of the mixed solution=6:90 is selected, add clay minerals, active agent is heated to 90-110 ℃, is 4KPa in the ai...

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Abstract

The invention discloses a specific rice controlled release composite fertilizer and preparing method, which comprises the following parts: 29-35% dressing aquacare40, 6-10% dressing aquacare S80, 8-12% ammonium phosphate, 3-5% dressing potassium sulfate S80, 14-18% potassium sulfate, 5-7% dressing magnesium sulfate S80 and 21-27% magnesium sulfate. The invention fits for double-season early and late rice, which reduces working cost and operating time.

Description

technical field [0001] The invention relates to a special controlled-release compound fertilizer for rice and a preparation method thereof. Background technique [0002] Rice is the main food crop in my country, and fertilization is one of the important material basis for increasing rice production. Rice fertilizers are affected by external factors such as climate and soil. At the same time, the objective needs of rice varieties for nutrition must be considered. my country has a vast territory, complex soil and climate conditions, and there are many varieties of rice with different nutritional characteristics. Traditional rice fertilization is difficult to meet different soils due to the single variety of fertilizers and quick-acting effects. Under climate conditions, different rice varieties have different effects on fertilizers. Therefore, not only the frequency of fertilization is large and the dosage is large, but also because the fertilizers used have many quick-acting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05G3/08C05C9/00C05B7/00C05D1/02C05D5/00C05G3/90
Inventor 刘俊松
Owner 刘俊松
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