Soil water-holding agent and preparation method thereof

A soil water-retaining agent and solution technology, applied in chemical instruments and methods, other chemical processes, etc., to achieve the effects of good mechanical properties, convenient and easy-to-obtain raw materials, and low cost

Inactive Publication Date: 2009-10-07
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the 1980s, my country has begun to develop water-retaining agents and apply them to agricultural and forestry production. It has achieved good results in aerial sowing afforestation, planting grass and transplanting seedlings by dipping roots, but there is still a big gap with foreign countries.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Soil water retaining agent: in parts by weight, 100 parts of modified corn stalk solution, 150 parts of polymerized sodium acrylate solution, 6 parts of ammonium persulfate solution and 8 parts of N,N'-methylenebisacrylamide solution.

[0021] Preparation method of soil water retaining agent: in parts by weight, mix 100 parts of modified corn stalk solution, 150 parts of polymerized sodium acrylate solution and 8 parts of N, N'-methylenebisacrylamide solution, stir evenly, and pour into Continuously fill the mixed solution with nitrogen gas with a flow rate of 5 liters per minute to remove the air in the mixed solution, then raise the temperature of the mixed solution to 30°C, react for 45 minutes, then add 6 parts of ammonium persulfate solution, stir evenly and slowly lower the temperature Control the temperature at 70°C. After the solution becomes viscous, dry and pulverize it and pass through a 40-mesh sieve to obtain a brown granular solid soil water-retaining agent...

Embodiment 2

[0031] The difference from Example 1 is:

[0032] Soil water retaining agent: in parts by weight, 120 parts of modified corn stalk solution, 200 parts of polymerized sodium acrylate solution, 10 parts of ammonium persulfate solution and 1 part of N,N'-methylenebisacrylamide solution.

[0033] Preparation method of soil water retaining agent: in parts by weight, mix 120 parts of modified corn stalk solution, 200 parts of polymerized sodium acrylate solution and 1 part of N, N'-methylenebisacrylamide solution, stir evenly, and pour to Continuously feed nitrogen gas with a flow rate of 5 liters / minute into the mixed solution to remove the air in the mixed solution, then increase the temperature of the mixed solution to 20°C, react for 50 minutes, then add 10 parts of ammonium persulfate solution, stir evenly and slowly lower the temperature Control the temperature at 90°C. After the solution becomes viscous, dry and pulverize it and pass through a 40-mesh sieve to obtain a brown ...

Embodiment 3

[0042] The difference from Example 1 is:

[0043] Soil water retaining agent: in parts by weight, 150 parts of modified corn stalk solution, 300 parts of polymerized sodium acrylate solution, 20 parts of ammonium persulfate solution and 12 parts of N, N'-methylenebisacrylamide solution.

[0044] Preparation method of soil water retaining agent: in parts by weight, mix 150 parts of modified corn stalk solution, 300 parts of polymerized sodium acrylate solution and 12 parts of N, N'-methylenebisacrylamide solution, stir evenly, and pour into Continuously fill the mixed solution with nitrogen gas at a flow rate of 5 liters per minute to remove the air in the mixed solution, then increase the temperature of the mixed solution to 30°C, react for 45 minutes, then add 20 parts of ammonium persulfate solution, stir evenly and slowly lower the temperature Control the temperature at 70°C. After the solution becomes viscous, dry and pulverize it and pass through a 40-mesh sieve to obtain...

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Abstract

The invention relates to a farmland soil water-holding agent, in particular to a soil water-holding agent and a preparation method thereof. The soil water-holding agent is prepared by the following solutions according to the parts by weight: 100-150 of modified corn straw solution, 100-300 of sodium polyacrylate solution, 5-20 of ammonium persulfate solution and 1-12 of N, N '-methylenebisacrylamide solution. The preparation method comprises the following steps: the modified corn straw solution, the sodium polyacrylate solution and the N, N '-methylenebisacrylamide solution are mixed according to a certain proportion, evenly blended and added with the 5-20 parts of the ammonium persulfate solution after a period of time and then react for a period of time under the protection of nitrogen atmosphere at the temperature of 50-90 DEG C to obtain transparent colloid; and the colloid is dried, crushed and sieved to obtain yellow brown soil water-holding agent solid particles. The soil water-holding agent has good hydroscopicity and mechanical property, low price and better application prospect.

Description

technical field [0001] The invention relates to a farmland soil water-retaining agent, in particular to a soil water-retaining agent and a preparation method thereof. Background technique [0002] Drought disasters occur frequently in various parts of our country, so the development of dry farming and water-saving industry has become an urgent problem to be solved in the current agricultural production. It is a new way and new method to save water and increase production by using water retaining agent. Water-retaining agent, also known as soil water-retaining agent, superabsorbent, humectant, superabsorbent resin, polymer water-absorbing agent, is a polymer with super high water-absorbing and water-retaining capacity made of strong water-absorbing resin. The water-retaining agent itself has no toxic and side effects, does not pollute the environment, and can eventually be biodegraded into water, carbon dioxide, and nitrogen. It is an effective means to adjust soil water, he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00C08L51/00C08F251/02C08F265/02
Inventor 刘作新苗永刚
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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