A method of using forest litter to improve saline-alkali soil

A soil improvement and litter technology, applied in the field of soil remediation, can solve problems such as the ineffectiveness of forest litter, and achieve the effects of remarkable improvement effect, abundant raw material sources and simple method.
CN109874436BActive Publication Date: 2022-03-11HUNAN HYBRID RICE RES CENT +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN HYBRID RICE RES CENT
Publication Date
2022-03-11

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Abstract

The invention relates to the technical field of soil remediation, in particular to a method for improving saline-alkali soil by using forest litter. The present invention comprises the following steps: (1) plowing deeply, excavating the topsoil; (2) laying the litter salt barrier; (3) backfilling the topsoil to level the land; (4) laying the pretreatment litter above the topsoil; 5) Cover the pretreated litter with a dense mesh and let it decompose naturally for 1 to 3 months. The invention utilizes forest litter to avoid secondary saline-alkali and secondary pollution in saline-alkali land, effectively and environmentally friendly reduces soil pH and salt content, improves soil physical and chemical properties in saline-alkali land, and increases soil productivity. The method of the invention is simple in operation, easy to obtain raw materials, low in cost and good in economic benefits, and the improved soil is suitable for various land use types such as common cultivated land, woodland, grassland and the like.
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Description

technical field

[0001] The invention relates to the technical field of soil restoration, in particular to a method for improving soil in saline-alkali land. Background technique

[0002] Saline-alkali soil is a general term for saline soil and alkaline soil. Saline soil mainly refers to salinized soil with high chloride or sulfate content. The soil is alkaline, but the pH value is not necessarily high. Alkaline soil refers to the soil containing carbonate or heavy phosphate, the pH value is high, the soil is alkaline, the organic matter content of saline-alkali soil is low, the soil fertility is low, the physical and chemical properties are poor, and there are many anions and cations harmful to crops. Promote seedlings. The main factors affecting the formation of saline-alkali land soil are: small precipitation, large evaporation, and the salt dissolved in water is easy to accumulate on the soil surface; water-soluble salt moves from high to low with water and accumulates ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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