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Semi-interpenetrating gel coated charcoal-based water retaining and fertility increasing agent and preparation method thereof

A biochar, semi-interpenetrating technology, applied in fertilization devices, fertilizer mixtures, agricultural gas emission reduction, etc., can solve the problems of insufficient water and fertilizer retention performance, lack of regional environmental adaptability, etc., to enhance absorption and Supply effect, the preparation process is simple and easy, and the effect of enhancing soil nutrient balance and

Inactive Publication Date: 2019-03-29
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional polymer gels often lack regional environmental adaptability, and their water and fertilizer retention properties cannot be fully utilized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, a kind of preparation method of the water retention and fattening compound agent of semi-interpenetrating gel package, comprises the following steps:

[0023] (1) Configured by weight, take 25 parts of environment-sensitive polymer compound monomer, 30 parts of mixed biochar, 2.0 parts of carboxymethyl cellulose, 0.3 parts of agar, 0.5 parts of bentonite, N,N-methylene 0.3 parts of bisacrylamide, 0.5 parts of potassium persulfate, and 50 parts of water; the weight ratio of the composite monomer is 50% of N-isopropylacrylamide, 30% of acrylic acid and 20% of sodium acrylate; Heating at ~85°C for 15~60min, then cooling to room temperature, is the water-retaining and fertilizing compound agent wrapped in semi-interpenetrating gel; the weight ratio of the mixed biochar is 70% of sugarcane leaf biochar, corncob biochar 30%.

[0024] Weigh the water-retaining and fertilizer-increasing compound agent of this example and mix it with 50 grams of sugarcane field co...

Embodiment 2

[0025] Embodiment 2, a preparation method of a semi-interpenetrating gel-wrapped water-retaining and fattening compound, comprising the following steps:

[0026] (1) Configured by weight, take 10 parts of environment-sensitive polymer composite monomer, 25 parts of mixed biochar, 1.5 parts of carboxymethyl cellulose, 0.6 parts of agar, 1.5 parts of bentonite, N,N-methylene 0.2 parts of bisacrylamide, 0.5 parts of potassium persulfate, and 60 parts of water; mix well, heat at 80-85°C for 15-60 minutes, and the product obtained after cooling is the compounding agent; the weight ratio of the compounding monomer is N-iso Propylacrylamide 50%, acrylic acid 30% and sodium acrylate 20%; the weight ratio of the mixed biochar is 70% of cane leaf biochar and 30% of corncob biochar.

[0027] The environment-sensitive semi-interpenetrating gel-wrapped water-retention and fertilizer-increasing compound of this embodiment can be used as an auxiliary slow-release fertilizer in addition to wa...

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PUM

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Abstract

The invention discloses a preparation method of a semi-interpenetrating gel coated charcoal-based water retaining and fertility increasing complex agent. The preparation method is characterized in that the novel water retaining and fertility increasing complex agent is prepared from the following components in parts by weight: 5 to 25 parts of an environment-sensitive polymer composite monomer, 10to 35 parts of mixed charcoal, 0.5 to 4.5 parts of carboxymethyl cellulose, 0.1 to 0.8 part of agar, 0.5 to 2.5 parts of bentonite, 0.1 to 0.6 part of N,N-methylene bisacrylamide, 0.2 to 0.5 part ofpotassium persulfate and 40 to 75 parts of water. According to the preparation method disclosed by the invention, environment-sensitive semi-penetrating gel adopted by the invention can respond to thechange of external environmental temperature and pH (Potential of Hydrogen), an intelligent water retaining and fertility increasing complex system is formed through a shrinking / swelling process of agel network, and the soil fertility is further increased through mixing of sugarcane leaf charcoal and other different source derived charcoal. The semi-interpenetrating gel coated charcoal-based water retaining and fertility increasing complex agent provided by the invention has the advantages of simple preparation process, low cost and regenerative raw materials, and green and environment-friendly effects.

Description

technical field [0001] The invention relates to a water-retaining and fertilizing agent and a preparation method thereof, in particular to a biochar-based water-retaining and fertilizing compound agent wrapped in a semi-interpenetrating gel and a preparation method thereof, belonging to the technical field of water-retaining and fertilizer-controlling. Background technique [0002] Polymer gel materials have important application value in water and fertilizer conservation in farmland. Traditional polymer gels often lack regional environmental adaptability, and their water and fertilizer retention properties cannot be fully utilized. Compared with traditional polymer materials, environment-sensitive high-hydrogels (such as temperature-sensitive hydrogels, pH-sensitive hydrogels) are ideal materials for water and fertilizer retention. Management and other aspects have great application potential. In particular, poly-N-isopropylacrylamide hydrogels and their copolymers are a ...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/08C05G3/80C05G3/90
CPCC05G3/00C05G3/80C05G3/90Y02P60/21Y02A40/22
Inventor 胡朝华袁照年
Owner FUJIAN AGRI & FORESTRY UNIV
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