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Wheat-specific organic biomaterial-wrapped controlled-release fertilizer and its production process

A technology of organic biology and production process, applied in the application, fertilization device, fertilizer mixture and other directions, can solve the problems of insignificant improvement of fertilizer utilization rate, complicated process and high cost, and achieve the promotion of mass reproduction, good adsorption, and low cost. Effect

Inactive Publication Date: 2015-09-02
WHEAT RES INST OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high cost of coating materials, complex process and nutrient release mode do not match the characteristics of crop fertilizer requirements, the increase in fertilizer utilization rate is not obvious and unstable.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The production process of special organic biological material wrapped controlled-release fertilizer for wheat comprises the following steps:

[0017] a. Preparation of fertilizer core: 296.1kg of urea fertilizer, 253.9kg of diammonium phosphate fertilizer, 131.4kg of potassium chloride fertilizer and 48.6kg of clay are pulverized and mixed evenly, granulated by disc granulation equipment, and sieved to make 95% The above special fertilizer core with a particle size between 2 and 3mm; the compound fertilizer contains 25% nitrogen (182.5kg), 16% phosphorus pentoxide (116.8kg), 9% potassium oxide (65.7kg );

[0018] b. Preparation of wrapping layer: Mix 175kg (70%) chicken manure, 62.5kg (25%) weathered coal, 10kg (4%) rice bran and 2.5kg (1%) decomposing agent to pile up and decompose, crush and pass through a 63-mesh sieve , forming bio-organic materials;

[0019] c. Encapsulation and granulation: through disc granulation equipment and spraying 15kg of water glass to w...

Embodiment 2

[0024] The production process of special organic biological material wrapped controlled-release fertilizer for wheat comprises the following steps:

[0025] a. Preparation of fertilizer core: 307.8kg of urea fertilizer, 271.7kg of diammonium phosphate fertilizer, 103kg of potassium chloride fertilizer and 52.5kg of clay are pulverized and mixed evenly, granulated by disc granulation equipment, and screened to make more than 95% A special fertilizer core with a particle size between 2 and 3mm; the compound fertilizer contains 26% nitrogen (191.1kg), 17% phosphorus pentoxide (125kg), and 7% potassium oxide (51.5kg);

[0026] b. Preparation of wrapping layer: mix 185kg (74%) chicken manure, 50kg (20%) weathered coal, 11.25kg (4.5%) wheat bran and 3.75kg (1.5%) decomposing agent to pile up and decompose, and crush through 70 mesh Sieves to form bio-organic materials;

[0027] c. Encapsulation and granulation: through the disc granulation equipment and spray 10kg of modified starc...

Embodiment 3

[0032] The production process of special organic biological material wrapped controlled-release fertilizer for wheat comprises the following steps:

[0033] a. Preparation of fertilizer core: 343kg of urea fertilizer, 244.6kg of diammonium phosphate fertilizer, 120kg of potassium chloride fertilizer and 42.4kg of clay are crushed and mixed evenly, granulated by disc granulation equipment, and 95% or more of granules are made by screening A special fertilizer core with a diameter between 2 and 3mm; the compound fertilizer contains 27% nitrogen (202.5kg), 15% phosphorus pentoxide (112.5kg), and 8% potassium oxide (60kg);

[0034] b. Preparation of wrapping layer: Mix 163.3kg (71%) chicken manure, 50.6kg (22%) weathered coal, 11.5kg (5%) rice bran and 4.6kg (2%) decomposing agent to pile up and decompose, crushed for 67 Mesh sieve to form bio-organic material;

[0035] c. Encapsulation and granulation: through disc granulation equipment and spraying 15kg of water glass to wrap b...

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Abstract

The invention relates to wrapped controlled-release fertilizers and particularly relates to a special organic-biomaterial-wrapped controlled-release fertilizer for wheat and a production process thereof. The special organic-biomaterial-wrapped controlled-release fertilizer is prepared from the following raw materials in percentage by weight: 73-75% of fertilizer core, 23-25% of wrapping layer, 1.0-1.5% of binder and 0.5% of seal brightener, wherein the fertilizer core is a special compounded fertilizer which is applied to wheat sowing after corn stalks are returned to field, and the special compounded fertilizer consists of a urea fertilizer, a diammonium phosphate fertilizer, a potassium chloride fertilizer and clay and contains 25-27% of elemental nitrogen, 15-17% of phosphorus pentoxide and 7-9% of potassium oxide; the wrapping layer is a bio-organic material which is formed through uniformly mixing, stacking and composting 70-75% of chicken manure, 20-25% of weathered coal, 4-5% of rice bran or wheat bran and 1-2% of decomposition agent; and the binder is water glass or modified starch.

Description

technical field [0001] The invention relates to a packaged controlled-release fertilizer, in particular to a special organic biological material packaged controlled-release fertilizer for wheat and a production process thereof. Background technique [0002] Chemical fertilizers account for about 50% of all productive expenditures in agricultural production, and also bring 55% increase in food production in developing countries. However, due to the comprehensive influence of fertilizer properties, soil environmental conditions, the characteristics of chemical fertilizers and unreasonable application, many problems such as low utilization rate, waste of resources, and environmental pollution have been caused. At present, the seasonal utilization rate of fertilizers in my country is 30-35% for nitrogen, 10-20% for phosphorus, and 35-50% for potassium. The seasonal utilization rate of nitrogen fertilizers is lower than that of developed countries in the world by 10-15%. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/02C05G1/00C05G3/60
Inventor 裴雪霞党建友张定一闫翠萍
Owner WHEAT RES INST OF AGRI SCI
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