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Biodegradable sandy soil water and fertilizer retention agent

A technology of water and fertilizer conservation and biodegradation, which is applied in the agricultural field, can solve the problems of water production efficiency and light energy conversion rate reduction, poor soil fertilizer retention capacity, water cycle obstruction, etc., and achieve excellent biodegradability, water and fertilizer retention excellent effect

Inactive Publication Date: 2021-01-29
广州望舒科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the desertified soil is poor in nutrients, organic matter and some inorganic substances, and the soil's ability to retain fertilizer is very poor
This results in low fertility of desertified soil, insufficient water retention and water supply capacity, strong changes in surface temperature, and difficulty in maintaining soil moisture balance after planting crops. Under normal rainfall or conventional irrigation systems, crops often close their stomata due to insufficient soil water supply. , the water cycle is blocked, photosynthesis is reduced, and the productivity of the ecosystem is reduced due to the reduction of water production efficiency and light energy conversion rate. In addition, the lack of fertility will result in no harvest in severe cases, which will cause the farmland ecosystem to collapse; the use of water-retaining agents can be very good. Solve the above problems, but the degradability of fully synthetic water-retaining agent materials is poor, and it will also bring a lot of hidden dangers to future environmental safety
The proportion of natural materials in the degradable water retaining agent of the prior art is small, and the degradation performance is poor

Method used

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  • Biodegradable sandy soil water and fertilizer retention agent
  • Biodegradable sandy soil water and fertilizer retention agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A biodegradable sandy soil water and fertilizer retention agent, its specific scheme is as follows:

[0029] Add 2g of gelatin, 8g of polyvinyl alcohol and 40g of modified plant fiber powder into 200g of water at 80°C, stir and mix for 10 minutes, keep warm for 10 minutes, then cool down to 30°C, add 8g of acryloyloxyethylaminopolysuccinimide, 20g of Stir and mix acrylamide and 0.5g initiator to obtain a mixed solution. Under the protection of nitrogen, react at a constant temperature of 72°C for 3 hours. After completion, add 0.01g cis-3-hexenol lactate and 0.1g initiator and stir and mix. After uniformity, continue to react for 1 hour, filter, and recycle the filtrate. The product is added to 5 times the weight of 5% sodium hydroxide aqueous solution, stirred at room temperature for 30 minutes, filtered, washed, and dried to obtain the described one. Biodegradable sandy soil water and fertilizer retention agent.

[0030] Described modified vegetable fiber powder, its...

Embodiment 2

[0041] A biodegradable sandy soil water and fertilizer retention agent, its specific scheme is as follows:

[0042] Add 4g of gelatin, 12g of polyvinyl alcohol and 45g of modified plant fiber powder into 250g of water at 90°C, stir and mix for 20 minutes, keep warm for 20 minutes, then cool down to 40°C, add 12g of acryloyloxyethylaminopolysuccinimide, 25g of Acrylamide and 1.2g initiator, stirred and mixed evenly to obtain a mixed solution, under the protection of nitrogen, react at a constant temperature of 75°C for 5h, after completion, add 0.05g cis-3-hexenol lactate and 0.3g initiator and stir and mix After uniformity, continue to react for 3 hours, filter, and recycle the filtrate. The product is added to 10 times the weight of 9% sodium hydroxide aqueous solution, stirred at room temperature for 50 minutes, filtered, washed, and dried to obtain the described one. Biodegradable sandy soil water and fertilizer retention agent.

[0043] Described modified vegetable fiber ...

Embodiment 3

[0054] A biodegradable sandy soil water and fertilizer retention agent, its specific scheme is as follows:

[0055] Add 6g of gelatin, 14g of polyvinyl alcohol and 55g of modified plant fiber powder into 300g of water at 100°C, stir and mix for 30 minutes, keep warm for 30 minutes, then cool down to 50°C, add 15g of acryloyloxyethylaminopolysuccinimide, 30g of Stir and mix acrylamide and 2g initiator to obtain a mixed solution. Under the protection of nitrogen, react at a constant temperature of 78°C for 8 hours. After completion, add 0.1g cis-3-hexenol lactate and 0.5g initiator and stir and mix evenly Then continue to react for 5 hours, filter, and recycle the filtrate. The product is added to 12 times by weight of 15% sodium hydroxide aqueous solution, stirred at room temperature for 60 minutes, filtered, washed, and dried to obtain the biocide. Water and fertilizer retention agent for degraded sandy soil.

[0056] Described modified vegetable fiber powder, its preparation...

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Abstract

The invention relates to the field of agriculture, in particular to a biodegradable sandy soil water and fertilizer retention agent. The water and fertilizer retention agent is prepared by copolymerizing and crosslinking gelatin, a degradable material polyvinyl alcohol, modified plant fiber powder, acrylic acid and acrylamide, and a large number of allyl groups and hydrophilic polyethylene glycolchain segments are grafted on the surface of the modified plant fiber powder, the affinity and the compatibility with the synthetic material are improved, and increasing the adding proportion is enabled to be possible; the water and fertilizer retention agent contains a large proportion of natural modified substances and degradable materials, has excellent biodegradability, also has excellent water and fertilizer retention properties, is suitable for being used in desertified soil or desert areas, and is an excellent agricultural growth aid.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a biodegradable water and fertilizer retention agent for sandy soil. Background technique [0002] Among the top ten global environmental problems in the 21st century, land desertification bears the brunt. Desertification is regarded as the "skin disease" and "canker disease" of the earth, and it is one of the major environmental problems that the international community is currently paying close attention to. my country's desertification area is large and widely distributed, and it is one of the countries that suffer the most serious desertification hazards in the world. After the water-retaining agent is applied to the soil, it will first quickly absorb the water in the soil, reduce underground leakage and soil surface evaporation, reduce water loss, and can repeatedly absorb and release water, forming a "miniature reservoir" in the soil. When the soil contains When the amount of wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F285/00C08F218/12C05G3/00C05G3/70
CPCC05C11/00C05G3/00C08F285/00C05G3/70C08F218/12C05F11/00
Inventor 不公告发明人
Owner 广州望舒科技有限公司
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