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Method for preparing ecological agricultural water-retaining agent

An agricultural water-retaining agent and ecological technology, applied in the agricultural field, can solve the problems of low price, high price, and single performance, and achieve the effect of simple process, low cost, and increased gel strength

Inactive Publication Date: 2011-04-06
XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, agricultural water-retaining agents produced abroad have good performance but are expensive, while domestically-produced agricultural water-retaining agents are cheap but have single performance, which limits the application of water-retaining agents in agricultural production in arid areas.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] a. According to the percentage by weight, the raw materials of acrylamide 10%, acrylic acid 30%, diammonium hydrogen phosphate 5%, urea 5%, humic acid 10%, bentonite 5%, attapulgite 10% are transported to the modulation reactor respectively for polymerization After the previous mixing, it is transferred to the polymerization reactor;

[0011] b. After passing the mixture in step a into nitrogen, add 0.35% of initiator ammonium persulfate, 0.25% of crosslinking agent N, N-methylene bisacrylamide and 0.5% of reaction accelerator triethanolamine, at a temperature of 50°C , time 1 hour, aging after the polymerization reaction;

[0012] c. Mix the product obtained in step b with 24.9% of a mixture of functional substances potassium fertilizer, nitrogen fertilizer and phosphate fertilizer, then transport to a granulator for granulation, dry at a temperature of 100°C, and then pulverize to 40 meshes to obtain an ecological agricultural water retaining agent.

Embodiment 2

[0014] a. By weight percentage, 35% of raw material acrylamide, 25% of acrylic acid, 2% of diammonium hydrogen phosphate, 3% of urea, 5% of humic acid, 3% of bentonite, and 7% of attapulgite are transported to the modulation reactor respectively, and After mixing before polymerization, transfer it to the polymerization reactor;

[0015] b. After passing the mixture in step a into nitrogen, add 0.25% of initiator perpersulfate potassium salt, 0.15% of cross-linking agent N, N-methylenebisacrylamide and 0.4% of reaction accelerator triethanolamine, at a temperature of 50 ℃, time 2 hours, aging after polymerization;

[0016] c. Mix the product obtained in step b with 19.2% of a mixture of functional substances potassium fertilizer, nitrogen fertilizer and phosphate fertilizer, then transport to a granulator for granulation, dry at a temperature of 100°C, and then pulverize to 40 meshes to obtain an ecological agricultural water retaining agent.

Embodiment 3

[0018] a. According to the percentage by weight, the raw materials of acrylamide 18%, acrylic acid 30%, diammonium hydrogen phosphate 4%, urea 4%, humic acid 8%, bentonite 4%, attapulgite 9%, were transported to the modulation reactor for polymerization After the previous mixing, it is transferred to the polymerization reactor;

[0019] b. After passing the mixture in step a into nitrogen, add 0.30% of initiator sodium bisulfite, 0.20% of crosslinking agent N, N-methylenebisacrylamide and 0.5% of reaction accelerator triethanolamine, at a temperature of 50°C , the time is 3 hours, and the aging is carried out after the polymerization reaction;

[0020] c. Mix the product obtained in step b with 22% of the mixture of functional substances potassium fertilizer, nitrogen fertilizer and phosphate fertilizer, transport it to a granulator for granulation, dry at 100°C, and then pulverize to 40 meshes to obtain an ecological agricultural water retaining agent.

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Abstract

The invention relates to a method for preparing an ecological agricultural water-retaining agent, which comprises the following steps of: mixing raw materials such as acrylamide, acrylic acid, diammonium hydrogen phosphate, urea, humic acid, bentonite and attapulgite, performing polymerization reaction, adding an initiator, a cross-linking agent and a reaction promoter, mixing a product and a functional substance, namely the mixture of a potassium fertilizer, a nitrogen fertilizer and a phosphorus fertilizer, pelleting, drying and crushing to obtain the ecological agricultural water-retaining agent. The method for producing and applying the conventional water-retaining agent is improved, so that the water-retaining agent product has the characteristics of low cost, and salt and alkali tolerance, is environmentally-friendly, multifunctional and eutrophic, and can be applied to the agricultural production of arid zones conveniently.

Description

technical field [0001] The invention belongs to the field of agriculture, and in particular relates to a preparation method and application of an ecological agricultural water-retaining agent. Background technique [0002] In the past ten years, due to the application of water-saving technology in agricultural production, the area of ​​cultivated land in Xinjiang (especially southern Xinjiang) has been increasing, and the water for agricultural production has become increasingly scarce. Abandoned area of ​​cultivated land. Therefore, it is very important to accelerate the development of modern water-saving and high-efficiency agricultural technology to effectively reduce the irrigation quota of farmland and solve the technical bottleneck problem of water-saving agriculture. At present, agricultural water-retaining agents produced abroad have better performance but are expensive, while domestically-produced agricultural water-retaining agents are cheap but have single perfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K101/00
Inventor 马英杰
Owner XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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