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Compound water-retaining agent for soil as well as preparation method and application of compound water-retaining agent

A technology of water-retaining agent and compound additive, which is applied in the field of compound water-retaining agent for soil and its preparation. It can solve the problems of insufficient water retention time, insufficient water retention of water-retaining agent, and single function, and achieve excellent water-retaining performance, excellent Synergistic effects, effects of broad market prospects

Active Publication Date: 2015-01-07
河北田加力生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although a variety of water-retaining agents have been successfully developed, these water-retaining agents still have defects such as insufficient water retention, insufficient water retention time, and single functionality.

Method used

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  • Compound water-retaining agent for soil as well as preparation method and application of compound water-retaining agent
  • Compound water-retaining agent for soil as well as preparation method and application of compound water-retaining agent
  • Compound water-retaining agent for soil as well as preparation method and application of compound water-retaining agent

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0047] Preparation Example 1: Preparation of Modified Chitosan

[0048] Weigh 1 part by weight of soluble chitosan and add it into distilled water to prepare a 7 wt% solution, add 0.15 part by weight of Enteromorpha powder, stir and heat up to 55 °C and mix for 8 min, then add 0.12 part by weight of isopropyl titanate, and heat up to Stir and react at 75°C for 25 min to obtain the modified chitosan, which is named as K and reserved for future use;

preparation example 2

[0049] Preparation Example 2: Preparation of Modified Seaweed

[0050] Weigh 1 part by weight of seaweed, soak it in an aqueous solution of sodium metabisulfite with a mass percentage concentration of 0.3% for 10 minutes, wash, dry naturally, and pulverize to 60 mesh to obtain a powder; then add a mass percentage concentration 2.5 times the powder mass 10% aqueous solution of copper abietate, heated to 65°C, stirred and mixed for 15 minutes, then concentrated, dried, and ground to 20-30 mesh to obtain the modified seaweed, which was named H and reserved for later use;

preparation example 3

[0051] Preparation Example 3: Preparation of Composite Auxiliaries

[0052] Sepiolite, pine needles and attapulgite are mixed according to the ratio of mass ratio 1:0.6:0.8, crushed to 40 mesh, and powder is obtained; adding 2 times the mass percentage concentration of powder weight is 0.6% citric acid aqueous solution, and at 60 Stir at ℃ for 20 min, after drying, add 2-thiophene methyl salicylate which is 4% by weight of sepiolite and tributylhexylphosphine bromide which is 2% by weight of sepiolite, continue stirring for 10 min, and finally add Isoamyl acetate equivalent to 12% of the weight of sepiolite, mixed evenly, granulated, and dried to obtain the composite auxiliary agent, named Z, and reserved for future use;

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Abstract

The invention relates to a compound water-retaining agent for soil. The compound water-retaining agent for soil is prepared from the following components: modified chitosan, modified seaweed, acrylamide, N-vinyl pyrrolidone, N, N'-methylene bisacrylamide, ammonium persulfate, 2-hydroxyl-4-methylthiobutyrylamide, a compound additive, a fermented fertilizer, montmorillonite, sodium carboxymethyl cellulose, a nano additive, calcium aluminate powder and sodium humate. By properly selecting components and specifically combining processes, the novel compound water-retaining agent for soil shows excellent soil water-retaining performances, so that the utilization rate of moisture in the soil is greatly improved and loss of moisture is avoided, and thus, the compound water-retaining agent is beneficial to water-retaining and moisturizing of the soil and the growth of crops, and has a wide industrial prospect and a high market value.

Description

technical field [0001] The invention relates to a water-retaining agent, more specifically to a composite water-retaining agent for soil and its preparation method and application, belonging to the field of agricultural technology. Background technique [0002] In my country, arid and semi-arid areas account for more than 50% of the country's land area, but the soil's water holding capacity is low, and it is easy to evaporate, and the utilization of water itself is low. Therefore, the drought problem has increasingly become a problem that plagues my country's agriculture and forestry. big problem [0003] In recent years, soil water retaining agent, as a new type of composite additive that can effectively enhance soil water holding capacity and water retention capacity, has made many important progress in the fields of soil structure improvement, agricultural water retention and drought resistance; [0004] There are many related reports about water retaining agents in the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C08F251/00C08F220/56C08F226/10C08F222/38C08B37/04C08B37/08C09K101/00
CPCC08B37/003C08B37/0084C08F251/00C09K17/40C09K2101/00C08F220/56C08F226/10C08F222/385
Inventor 司红康范远景史成武周绪胜
Owner 河北田加力生物科技股份有限公司
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