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A double-film slow-release fertilizer containing humic acid and its preparation method

A slow-release fertilizer and humic acid technology, applied in the form of fertilizer, fertilization device, fertilizer mixture, etc., can solve the problems of limited application and promotion, high price, and soil structure damage

Active Publication Date: 2014-10-08
吉林澳佳农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First, due to the influence of film materials and production process costs, the price of slow (controlled) release fertilizer is high, which limits its application and promotion; second, the selected resin coating material has a long degradation cycle and may Cause damage to the soil structure; third, the dissolution rate of coated fertilizers in water is mostly used as the detection index, which is not consistent with its release in different soil environments. Therefore, the slow (controlled) release of fertilizer nutrients is predicted under laboratory and field conditions. The release mechanism and mathematical membrane type need further research

Method used

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  • A double-film slow-release fertilizer containing humic acid and its preparation method
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Examples

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Effect test

Embodiment 1

[0046] Embodiment 1: the preparation method of the double-film slow-release fertilizer containing humic acid

[0047] 1. Preparation of the first layer of film material (modified gelatin composite solution), taking 100 kg per production as an example.

[0048] (1) Add 15 kg of water and 2.5 kg of gelatin into the reaction kettle A, soak for 30 minutes, then stir and heat up to 60-70°C, and then add 20 kg of urea;

[0049] (2) Add 36 kg of water, 20 kg of ferrous sulfate, 1.5 kg of zinc sulfate, 1.5 kg of magnesium sulfate, 0.5 kg of manganese sulfate, 0.5 kg of boric acid, and 2.5 kg of ammonium citrate in the reaction kettle B, stir and heat to 50-60°C;

[0050] (3) Pour the liquid in Reactor B into Reactor A and keep stirring for 2 hours to make a modified gelatin compound solution for later use.

[0051] 2. Preparation of the second layer of membrane material (ultrafine activated humic acid powder). Take each production of 100 kg as an example:

[0052] Mix 99 kg of pre...

Embodiment 2

[0057] Embodiment 2: the preparation method of the double-film slow-release fertilizer containing humic acid

[0058] 1. Preparation of the first layer of film material (modified gelatin composite solution). Take each production of 100 kg as an example.

[0059] (1) Add 15 kg of water and 2 kg of gelatin into the reaction kettle A, soak for 30 minutes, then stir and heat up to 60-70°C, and then add 40 kg of urea;

[0060] (2) Add 33 kg of water, 5 kg of ferrous sulfate, 1 kg of zinc sulfate, 1 kg of magnesium sulfate, 1 kg of manganese sulfate, 1 kg of boric acid, and 2 kg of ammonium citrate in the reaction kettle B, stir and heat to 50-60°C;

[0061] (3) Pour the liquid in Reactor B into Reactor A and keep stirring for 2 hours to make a modified gelatin compound solution for later use.

[0062] 2. Preparation of the second layer of membrane material (ultrafine activated humic acid powder), taking 100 kg per production as an example:

[0063] Mix 99 kg of pre-crushed 200-...

Embodiment 3

[0069] Embodiment 3: the preparation method of the double-film slow-release fertilizer containing humic acid

[0070] 1. Preparation of the first layer of film material (modified gelatin composite solution). Take each production of 100 kg as an example.

[0071] (1) Add 15 kg of water and 2 kg of gelatin into the reaction kettle A, soak for 30 minutes, then stir and heat up to 60-70°C, and then add 40 kg of urea;

[0072] (2) Add 33 kg of water, 5 kg of ferrous sulfate, 1 kg of zinc sulfate, 1 kg of magnesium sulfate, 1 kg of manganese sulfate, 1 kg of boric acid, and 2 kg of ammonium citrate in the reaction kettle B, stir and heat to 50-60°C;

[0073] (3) Pour the liquid in Reactor B into Reactor A and keep stirring for 2 hours to make a modified gelatin compound solution for later use.

[0074] 2. Preparation of the second layer of membrane material (ultrafine activated humic acid powder), taking 100 kg per production as an example:

[0075] Mix 99 kg of pre-crushed 200-...

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Abstract

The invention relates to a double membrane slow release fertilizer containing humic acid and a preparation method thereof. The double membrane slow release fertilizer consists of a fertilizer core, a first envelope and a second envelope and is prepared by the components in parts by weight as follows: 90-98 parts of fertilizer core, 0.5-5 parts of first envelope, 1-5 parts of second envelope and 0.5-2 parts of bonder. According to the double membrane slow release fertilizer containing humic acid, gelatin and humic acid are taken as a membrane material and can be degraded to amino acids and fulvic acid which can be directly absorbed by crops or converted into soil organic matters without damaging soil structure or polluting soil.

Description

technical field [0001] The invention relates to a fertilizer containing humic acid, in particular to a double-film slow-release fertilizer containing humic acid and a preparation method thereof. Background technique [0002] Chemical fertilizer plays an important role in agricultural production. As "grain of food", it supports 55% of agricultural output and consumes 50% of agricultural investment. It is a modern agricultural integration composed of good seeds, good fertilizers, good opportunities, good systems, and good recipes. important part of the system. Especially in the current situation where the population continues to grow and the arable land continues to decrease, chemical fertilizers have become one of the important factors supporting agricultural output. [0003] However, due to the backwardness of fertilizer products and improper application, the utilization rate of fertilizer nutrients in my country is low in the current season. The nitrogen fertilizer is 30%-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G5/00
Inventor 冯广祥田原宇乔生
Owner 吉林澳佳农业科技有限公司
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