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Control release composite fertilizer special for cotton and its preparation method

A compound fertilizer and cotton technology, applied in the direction of urea compound fertilizer, application, nitrogen fertilizer, etc., can solve the problems of cotton quality decline, heavy labor, cotton nutritional imbalance, etc., and achieve the goal of improving light and performance, reducing operation time, and reducing labor costs Effect

Inactive Publication Date: 2008-04-30
刘俊松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional cotton fertilization is not only a large amount, high cost, and heavy labor, but also excessive application of inorganic fertilizers will cause soil compaction, fertilizer loss, environmental pollution and cotton quality decline and other adverse effects
At the same time, excessive use of single chemical fertilizers can easily lead to nutritional imbalance, growth and lodging of cotton

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: the preparation method of the special controlled release compound fertilizer of planting cotton, it may further comprise the steps:

[0030]1). Prepare coated urea 100: (a) select granular urea with a diameter of 3-4mm, put it into a fluidized bed, and heat it to 70°C; For 12, the percentage by weight of urea accounting for coating urea 100 is 88 and selecting coating 100, urea; preparing coating 100: according to the percentage by weight of each component coating 100: clay mineral: 57, biodegradable resin: 42. Active agent: 1. Select clay mineral, biodegradable resin and active agent; dissolve the biodegradable resin in a mixed solution of tetrachloromethane and tetrachloroethane each accounting for 1 / 2 weight, according to clay mineral, biodegradable Degradation resin and activator: the weight ratio of mixed solution=9:90 select mixed solution, add clay mineral, activator and heat to 100 ℃, be 4KPa with two-fluid nozzle at air atomization pressure, spray...

Embodiment 2

[0038] Embodiment 2: the preparation method of the special controlled release compound fertilizer of planting cotton, it may further comprise the steps:

[0039] 1). Prepare coated urea 100: (a) select granular urea with a diameter of 3-4mm, put it into a fluidized bed, and heat it to 60°C; 10, urea accounted for coating urea 100 percent by weight is 90 to select coating 100, urea; preparation coating 100: according to the percentage by weight of each component coating 100: clay mineral: 56, biodegradable resin: 43. Active agent: 1. Select clay mineral, biodegradable resin and active agent; dissolve the biodegradable resin in a mixed solution of tetrachloromethane and tetrachloroethane each accounting for 1 / 2 weight, according to clay mineral, biodegradable Degradation resin and activator: the weight ratio of mixed solution=6:90 selects mixed solution, adds clay mineral, activator is heated to 90 ℃, is 4KPa with two-fluid nozzle at air atomization pressure, is sprayed with the...

Embodiment 3

[0044] Embodiment 3: the preparation method of the special controlled release compound fertilizer of planting cotton, it may further comprise the steps:

[0045] 1). Prepare coated urea 100: (a) select granular urea with a diameter of 3-4mm, put it into a fluidized bed, and heat it to 80°C; For 14, the percentage by weight of urea in coating urea 100 is 86 and select coating 100, urea; prepare coating 100: according to the percentage by weight of coating 100 of each component: clay mineral: 60, biodegradable resin: 39. Active agent: 1. Select clay mineral, biodegradable resin and active agent; dissolve the biodegradable resin in a mixed solution of tetrachloromethane and tetrachloroethane each accounting for 1 / 2 weight, according to clay mineral, biodegradable Degradation resin and active agent: the weight ratio of mixed solution=12:90 select mixed solution, add clay mineral, active agent and heat to 110 ℃, be 4KPa with two-fluid nozzle at air atomization pressure, spray with ...

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Abstract

The present invention relates to a special-purpose control release complex fertilizer for cotton and its preparation method. It is characterized by that said special-purpose control release complex fertilizer is made up by using (by wt) 13.5-14.5% of coating urea 100, 13.5-14.5% of coating urea S100, 39.0-41.0% of calcium perphosphate and 31.0-33.0% of coating potassium chloride through a certain preparation process. It not only can meet the requirements for cotton growth, but also can raise cotton fibre quality.

Description

technical field [0001] The invention relates to a special controlled-release compound fertilizer for cotton and a preparation method thereof. Background technique [0002] Cotton field fertilization and application of nitrogen, phosphorus and potassium fertilizers are important measures for early maturation, high quality and high yield of cotton. Cotton has different nutritional needs according to its growth characteristics. According to reports, the absorption peaks of general nitrogen, phosphorus, and potassium nutrients are all in the period from flowering to boll opening, accounting for about 50-70% of the total absorption. [0003] Traditional cotton fertilization is not only a large amount, high cost, and heavy labor, but also excessive application of inorganic fertilizers will cause soil compaction, fertilizer loss, environmental pollution and cotton quality decline and other adverse effects. At the same time, large-scale use of single chemical fertilizers can easil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00C05G3/08C05C9/00C05B1/02C05D1/02C05G3/90
Inventor 刘俊松
Owner 刘俊松