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Organic-inorganic composite agriculture and forestry water-retaining agent and preparation method thereof

A composite, water-retaining agent technology, applied in the direction of organic fertilizers, agricultural machinery and implements, chemical instruments and methods, etc., can solve the problem that water-retaining agents cannot meet the needs of water and nutrients at the same time

Active Publication Date: 2020-04-21
西藏绿洲鑫鑫生态农林发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The single use of water-retaining agent cannot meet the needs of crops for water and nutrients at the same time, but the mixed application of water-retaining agent and fertilizer can give full play to the role of water-retaining agent in slowly dissolving nutrients in fertilizer while absorbing, retaining and releasing water, so in recent years The application of slow-release water-retaining agents that can play both water-retaining and slow-release functions has attracted attention in agriculture and forestry, but the choice of water-retaining materials limits its application in agriculture and forestry

Method used

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  • Organic-inorganic composite agriculture and forestry water-retaining agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An organic-inorganic composite agricultural and forestry water-retaining agent is prepared from the following raw materials in parts by weight:

[0037] 32 parts of straw cellulose, 16 parts of modified vermiculite, 8 parts of humic acid, 90 parts of potassium hydroxide solution with a mass concentration of 5%, 5 parts of N,N'-methylenebisacrylamide, 2 parts of potassium persulfate, 60 parts of 5% sodium hydroxide solution, 110 parts of 2% urea solution, 60 parts of acrylic acid solution with a neutralization degree of 80%, 5 parts of γ-polyglutamic acid, and 2% carbodiimide solution 25 parts, 10 parts of 1,4-butanediamine, 0.5 parts of a buffer composed of citric acid and trisodium citrate at a mass ratio of 1:1, and 80 parts of deionized water.

[0038] The preparation method of straw cellulose is as follows:

[0039] Cut corn stalks and add them to water, boil for 3 hours, dry them, pulverize them with a grinder, add them to dilute nitric acid with a mass fraction o...

Embodiment 2

[0045] An organic-inorganic composite agricultural and forestry water-retaining agent is prepared from the following raw materials in parts by weight:

[0046] 40 parts of straw cellulose, 10 parts of modified vermiculite, 5 parts of humic acid, 100 parts of 8% potassium hydroxide solution, 4 parts of N,N'-methylenebisacrylamide, 1 part of potassium persulfate, 60 parts of 3% sodium hydroxide solution, 120 parts of 2% urea solution, 80 parts of acrylic acid solution with a neutralization degree of 80%, 6 parts of γ-polyglutamic acid, and 5% carbodiimide solution 25 parts, 12 parts of 1,4-butanediamine, 0.5 parts of a buffer composed of citric acid and trisodium citrate at a mass ratio of 1:1, and 80 parts of deionized water.

[0047] The preparation method of straw cellulose is as follows:

[0048] Cut corn stalks and add them to water, boil for 5 hours, dry them, pulverize them with a grinder, add them to dilute nitric acid with a mass fraction of 15%, heat up to 60°C for 60...

Embodiment 3

[0054] An organic-inorganic composite agricultural and forestry water-retaining agent is prepared from the following raw materials in parts by weight:

[0055] 35 parts of straw cellulose, 20 parts of modified vermiculite, 6 parts of humic acid, 80 parts of potassium hydroxide solution with a mass concentration of 5%, 5 parts of N,N'-methylenebisacrylamide, 2 parts of potassium persulfate, 60 parts of 5% sodium hydroxide solution, 120 parts of 3% urea solution, 60 parts of acrylic acid solution with a neutralization degree of 80%, 5 parts of γ-polyglutamic acid, and 5% carbodiimide solution 20 parts, 10 parts of 1,4-butanediamine, 0.5 parts of a buffer composed of citric acid and trisodium citrate at a mass ratio of 1:1, and 80 parts of deionized water.

[0056] The preparation method of straw cellulose is as follows:

[0057] Cut corn stalks and add them to water, boil for 5 hours, dry them, pulverize them with a grinder, add them to dilute nitric acid with a mass fraction o...

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Abstract

The invention provides an organic-inorganic composite agriculture and forestry water-retaining agent and a preparation method thereof, and relates to the field of water-retaining agents. The water-retaining agent is prepared from, by mass, 30-40 parts of straw cellulose, 10-20 parts of modified vermiculite, 5-8 parts of humic acid, 80-100 parts of a potassium hydroxide solution with the mass concentration of 5-10%, 3-6 parts of N,N'-methylenebisacrylamide, 1-2 parts of potassium persulfate, 50-60 parts of a sodium hydroxide solution with the mass concentration of 3-6%, 100-120 parts of a ureasolution with the mass concentration of 1-3%, 60-80 parts of an acrylic acid solution with the neutralization degree of 80%, 5-10 parts of gamma-polyglutamic acid, 20-30 parts of a carbodiimide solution with the mass concentration of 2-5%, 10-12 parts of 1,4-butanediamine, 0.1-1 part of a buffering agent and 60-80 parts of deionized water. The composite agriculture and forestry water-retaining agent has quite high water absorption rate, and can effectively relieve soil hardening besides water retention and fertilizer extraction when used in soil.

Description

technical field [0001] The invention relates to the field of water-retaining agents, in particular to an organic-inorganic composite agricultural and forestry water-retaining agent and a preparation method thereof. Background technique [0002] Soil moisture and nutrient conditions are two factors that affect crop growth and crop yield. Water-retaining agent, also known as water-absorbing agent, water-retaining agent, humectant, water-absorbing polymer, superabsorbent resin, etc., is a high molecular polymer. It can quickly absorb and maintain hundreds of times its own mass of deionized water, tens to nearly a hundred times of saline water, and has the ability to repeatedly absorb and release water. Therefore, people in agriculture compare it to a "miniature reservoir". At the same time, it can also absorb fertilizers and pesticides and release them slowly to increase fertilizer and drug effects. Superabsorbent resins are widely used in agriculture, forestry, horticulture...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C08F289/00C08F220/06C09K101/00
CPCC08F289/00C09K17/40C09K2101/00C08F220/06
Inventor 张淼
Owner 西藏绿洲鑫鑫生态农林发展有限公司
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