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Method for quickly improving water-stable aggregate of sandy soil

A technology for water-stable aggregates and sandy soils, which is applied in the fields of rapidly improving water-stable aggregates in sandy soils, sandy soil improvement and soil desertification prevention and control. Water retention, quick-acting effect

Inactive Publication Date: 2013-01-02
SOUTHWEST UNIV
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Problems solved by technology

[0003] Polyacrylamide (PAM) is a good soil improver, which has a good improvement effect on improving soil structure, increasing soil moisture, retaining water, fertilizer and moisture, but long-term and single use of these improvers will cause soil compaction, etc. Adverse consequences

Method used

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Embodiment Construction

[0011] The technical solution of the present invention will be further described below.

[0012] The method for quickly improving the water-stable aggregates of sandy soil in the present invention is to add the mixture of calcium-based bentonite and anionic polyacrylamide to the soil in an amount of 90-150 kg / mu and fully mix it with the surface soil, and the calcium-based bentonite ( The fineness is less than 200 mesh) and the mass ratio of anionic polyacrylamide is 100:5-20.

[0013] The specific addition can be carried out according to the following standards: when the water-stable aggregates larger than 0.25 mm in the soil are less than 10%, the mixture of calcium-based bentonite and anionic polyacrylamide is added at 130-150 kg / mu; when the water-stable aggregates larger than 0.25 mm in the soil When the water-stable aggregate of mm is 10-20%, the mixture of calcium-based bentonite and anionic polyacrylamide is added at 100-130kg / mu; when the water-stable aggregate larger...

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Abstract

The invention discloses a method for quickly improving water-stable aggregate of sandy soil, which comprises the step of adding mixture of calcium bentonite and anionic polyacrylamide into soil with a ratio of 90-150 kg / mu to be fully mixed with topsoil, and the mass ratio of calcium bentonite and anionic polyacrylamide is 100:5-20. The method has the advantages that the water-stable aggregate structure in sandy soil can be quickly and effectively improved, the physical property of the soil can be modified, so that the soil can be highly water retentive and air permeable, the soil fertility can be increased, and sealing of soil can be avoided, so as to achieve the high requirement that the soil is suitable for plant growth.

Description

technical field [0001] The invention relates to sandy soil improvement technology, in particular to a method for rapidly improving sandy soil water-stable aggregates, and belongs to the technical field of sandy soil improvement and soil desertification prevention and control. Background technique [0002] In recent years, with the increase of my country's population and the development of urbanization, the reduction rate of cultivated land has accelerated, and the number of cultivated land per capita is seriously insufficient. The low-yield sandy soil occupies a large area, which restricts the development of agriculture. The development and utilization of these low-fertility sandy land resources as compensation for the occupation of cultivated land can alleviate the pressure brought about by the lack of cultivated land resources to a certain extent. At present, my country has achieved certain results in the investigation of cultivated land quality and the improvement of low...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B77/00C09K17/42
Inventor 王定勇陈宏李俊颖赵秀兰朱金山石孝均
Owner SOUTHWEST UNIV
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