A kind of agricultural soil moisture blocking agent and preparation method thereof

A soil moisture and retarder technology, used in agriculture, soil conditioning materials, agricultural machinery and implements, etc., can solve problems such as soil erosion protection by plastic film, and achieve the effects of preventing soil erosion, high application value, and reducing runoff.

Active Publication Date: 2020-08-04
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an agricultural soil moisture blocking agent, which solves the problems of rain collection, water saving, water conservation and fertilizer conservation in arid areas, and can replace the use of plastic film to protect water and soil loss in the prior art

Method used

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  • A kind of agricultural soil moisture blocking agent and preparation method thereof
  • A kind of agricultural soil moisture blocking agent and preparation method thereof

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preparation example Construction

[0021] A kind of preparation method of agricultural soil moisture blocking agent of the present invention, concrete operation steps are as follows:

[0022] Step 1, weigh the following materials according to mass percentage: polycaprolactone 3-7%, polylactic acid 1-3%, γ-polyglutamic acid 50-55%, quartz sand 30-35%, chlorinated palm oil 3-7% of esters, 2-4% of glycerin, the sum of the mass percentages of the above components is 100%;

[0023] Step 2, Stir and mix all the materials weighed in Step 1 evenly, the stirring and mixing temperature is 50-60°C, and the stirring and mixing time is 10-24h; then put it into an extrusion granulator, and granulate in the extrusion granulator, The granulation temperature is 70-80° C. to obtain the moisture blocker, and the particle size of the moisture blocker particles is 0.5-2.8 mm.

Embodiment 1

[0026] Step 1, weigh the following materials: 30g of polycaprolactone with a molecular weight of 5000Da, 30g of polylactic acid with a molecular weight of 3000Da, 500g of γ-polyglutamic acid with a molecular weight of 10000Da, 350g of quartz sand, 70g of chlorinated palm oil methyl ester, Glycerin 20g.

[0027] Step 2, Stir and mix all the materials weighed in Step 1 evenly, the stirring and mixing temperature is 50°C, and the stirring and mixing time is 10h; At 70°C, a moisture blocking agent is obtained, and more than 97% of the particles in the moisture blocking agent have a particle size of 0.5-2.8mm.

Embodiment 2

[0029] Step 1, weigh the following materials: 70g of polycaprolactone with a molecular weight of 10000Da, 10g of polylactic acid with a molecular weight of 1500Da, 550g of γ-polyglutamic acid with a molecular weight of 80000Da, 300g of quartz sand, 30g of chlorinated palm oil methyl ester, Glycerin 40g;

[0030] Step 2, Stir and mix all the materials weighed in step 1 evenly, the stirring and mixing temperature is 60°C, the stirring and mixing time is 24h, and then put into the extrusion granulator, and granulate in the extrusion granulator, the granulation temperature is At 80°C, a moisture blocker is obtained, and more than 97% of the particles in the moisture blocker have a particle size of 0.5-2.8mm.

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Abstract

The invention discloses an agricultural soil moisture retardant. The agricultural soil moisture retardant comprises the following materials in percent by mass: 3-7% of polycaprolactone, 1-3% of polylactic acid, 50-55% of gamma-polyglutamic acid, 30-35% of quartz sand, 3-7% of chloro palm-oil methyl ester and 2-4% of glycerinum, and the sum of the mass percents of all the components is 100%. The invention also discloses a preparation method of the moisture retardant. The preparation method comprises the following specific steps of: weighing the raw materials according to the mass percent, uniformly mixing the raw materials, then extruding and granulating to obtain the moisture retardant. The agricultural soil moisture retardant disclosed by the invention is a biodegradable material, and canbe degraded by microorganisms in cultivated soil; in addition, the moisture in agricultural soil can be effectively prevented from permeating into an uncultivated layer, rainfall in a non-fertile phase can be stored, the soil infiltration can be improved, the runoff generation can be reduced, the soil moisture content can be improved and the water and soil loss and the soil impoverishment can beeffectively prevented.

Description

technical field [0001] The invention belongs to the technical field of agricultural soil protection methods, in particular to an agricultural soil moisture blocker, and also relates to a preparation method of the agricultural soil moisture blocker. Background technique [0002] There are 34 million km of arable land in dry agricultural areas in northern my country 2 , accounting for 1 / 3 of the country's cultivated land, of which 23 million km 2 Irrigation is not possible due to the shortage of water resources, and making full use of precipitation in areas with rainfall of 250-500 mm is the fundamental way for sustainable agricultural development. In addition, with the improvement of agricultural intensification, the excessive application of nitrogen and phosphorus fertilizers, and the growing season of summer crops coincides with the high temperature and rainy season from July to September, so the leaching of nitrogen and phosphorus is relatively serious, which not only cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40C09K101/00
CPCC09K17/40C09K2101/00
Inventor 沈文敖芬王兰
Owner SHAANXI UNIV OF SCI & TECH
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