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Production method of multi-nutrient green manure of controlling releasing

A production method and nutrient technology, which can be applied to fertilizer forms, fertilizer mixtures, and fertilization devices, etc., can solve the problems of difficulty in meeting the balance of various nutrients of plants, low nitrogen utilization rate of controlled-release nitrogen fertilizers, and high product costs, and achieve promotion The effect of increasing and improving farmers' income, improving fertilizer nutrient use efficiency, and reducing fertilizer input

Inactive Publication Date: 2005-12-28
SOUTHWEST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, it will inevitably cause high product cost and secondary pollution, mainly used in non-agricultural markets (such as 92% in the United States); controlled-release nitrogen fertilizers have low nitrogen use efficiency and limited applications, and are difficult to meet the balance of various nutrients in plants and Fertilization Technology Requirements for Developing Famous, Special and High-quality Agricultural Products

Method used

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  • Production method of multi-nutrient green manure of controlling releasing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] a. Mix rapeseed meal, fish meal, and feather meal with particles ≤0.25mm in any mass ratio, add urea 0.8 times the mass, stir evenly, and then add an equal volume of 5mol / l H 2 SO 4 , 4mol / l H 3 PO 4 and 2mol / l HNO 3 The rapid decomposer is composed so that the mass ratio of organic matter and decomposer is 1:0.4, fully stirred evenly, and reacted at 60°C for 48 hours, adding bone powder with a mass ratio of 40%, mixed and balanced for 8 hours.

[0023] b. By mass, get 30% urea, add 20% concentrated sulfuric acid, add 40% bone charcoal and 10% bone meal after the reaction is complete, stir evenly, and cool to room temperature.

[0024] c. In terms of mass, take 57% of KH 2 PO 4 , 28% NH 4 h 2 PO 4 and 15% dicyandiamide, add 0.5 times water, dissolve it at 80°C, cool, dehydrate and dry.

[0025] d. Take 45 parts, 16 parts, 20 parts and KNO of the three components of a, b and c 3 10 parts, mixed evenly, passed through a 0.4mm sieve, added 9 parts of zeolite and ...

Embodiment 2

[0027] a. Mix rapeseed meal, fish meal, and feather meal with particles ≤ 0.25mm in any mass ratio, add 0.6 times the mass of urea, stir evenly, and then add an equal volume of 4mol / l H 2 SO 4 , 4mol / l H 3 PO 4 and 5mol / l HNO 3 The rapid decomposer is composed so that the mass ratio of organic matter and decomposer is 1:0.5, fully stirred evenly, and reacted at 50°C for 48 hours, adding bone meal with a mass ratio of 25%, mixed and balanced for 12 hours.

[0028] b. By mass, get 25% urea, add 20% concentrated sulfuric acid, add 45% bone charcoal and 10% bone meal after the reaction is complete, stir evenly, and cool to room temperature.

[0029] c. In terms of mass, take 58% of KH 2 PO 4 , 30% NH 4 h 2 PO 4 and 12% dicyandiamide, add 1 times water, dissolve it at 70°C, cool, dehydrate and dry.

[0030] d. Take 32 parts, 18 parts, 25 parts and K of the three components of a, b and c 2 SO 4 15 parts, mix evenly, pass through a 0.4mm sieve, add 10 parts of zeolite and ...

Embodiment 3

[0032] a. Mix rapeseed meal, fish meal, and feather meal with particles ≤ 0.25mm in any mass ratio, add urea 0.7 times the mass, stir evenly, and then add an equal volume of 3mol / l H 2 SO 4 , 4mol / l H 3 PO 4 and 4mol / l HNO 3 The rapid decomposer is composed so that the mass ratio of organic matter and decomposer is 1:0.6, fully stirred evenly, and acted at 55°C for 48 hours, adding bone meal with a mass ratio of 36%, mixed and balanced for 6 hours.

[0033] b. By mass, get 32% urea, add 18% concentrated sulfuric acid, add 35% bone charcoal and 15% bone meal after the reaction is complete, stir evenly, and cool to room temperature.

[0034] c. By mass, take 45% of KH 2 PO 4 , 40% NH 4 h 2 PO 4 and 15% dicyandiamide, add 0.8 times water, dissolve it at 75°C, cool, dehydrate and dry.

[0035] d. Take 35 parts, 16 parts, 22 parts and KNO of the three components of a, b and c 3 15 parts, mix evenly, pass through a 0.4mm sieve, add 12 parts of zeolite and starch mixture (...

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Abstract

The invention is a method of producing green controlled release multi-nutrient fertilizer, or a nutrient structural controlled release fertilizer producing method, using high-nitrogen organic compound, urea transformed compound, and nitrogen phosphor potassium inorganic compound as main body, assorted with potassic fertilizer and granulating agent, and obtaining it by a series of process steps. It contains the nutrients: N, P, K, Ca, S, B, etc. where the N-P-K nutrient accounts for 30-35%, the medium trace element nutrient accounts for 5%-10%, the release period of the nutrients is over 70 days, the ratio of organic to inorganic nitrogen nutrients is 1 : 1, the soluble organic nitrogen accounts for 50% of total organic nitrogen, the dissolved P in the weak acid of P nutrient and organic P account for 50% of total P, and it can produce high-N high-P low-K type, low-N high-P high-K type, and balanced N-P-K type controlled release special fertilizer series according to plant varieties.

Description

technical field [0001] The invention relates to the technical field of novel agricultural fertilizers, in particular to a production method of a controlled-release multi-nutrient fertilizer, or a production method of a nutrient structure-type controlled-release fertilizer. Background technique [0002] Chemical fertilizers are one of the most important means of production in modern agriculture. However, with the substantial increase in the application of chemical fertilizers, especially chemical nitrogen fertilizers, the quality of agricultural products and the safety of the ecological environment have been greatly threatened. The main reason is that ordinary (nitrogen) fertilizers release fast nutrients, low plant utilization rates, and large losses. [0003] Controlled-release (slow-release) fertilizer is a new type of fertilizer that releases nutrients suitable for plant nutrition, has high nutrient utilization efficiency, and has little environmental pollution. Its resea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00C05G3/90C05G5/00
Inventor 王正银叶学见叶进董燕李会合杨志敏黄云
Owner SOUTHWEST AGRICULTURAL UNIVERSITY
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