Sand land soil reconstruction method

Abstract

The invention belongs to the field of sand land soil treatment, and relates to a sand land soil reconstruction method. The sand soil reconstruction method includes: stripping a surface layer of a sand land, and flattening a surface of the stripped land without surface soil; laying powdered coal ash to the surface of the treated land of the step 1, and evenly spraying the treated land with less water; fully mixing the powdered coal ash and sand through mechanical rotary tillage, and acquiring a mixture layer of the powdered coal ash and the sand; rolling the mixture layer of the step 3, and acquiring a water and fertilizer retaining layer; and covering the water and fertilizer retaining layer of the step 4 with the stripped surface soil of the sand land. The problem that the water and fertilizer retaining ability of the sand land is poor and the powered coal ash occupies lands can be solved; the powdered coal ash and the sand soil are mixed and rolled to form the artificial water and fertilizer retaining layer, which can ensure the ventilation of the soil and has certain water and fertilizer retaining ability; and the yield of crops in the reconstructed sand land is close to or identical to the yield of the crops in general lands.

Description

technical field [0001] The invention belongs to the field of sandy land improvement, and relates to a sandy soil reconstruction method. Background technique [0002] There are large areas of sandy land distributed in the inland arid regions of Northwest my country. Due to the loose texture, large number of coarse grains (particle size ranges from 1 to 0.05 mm), the capillary water holding capacity is weak, and the limited precipitation seeps to the deep layer, which makes the water and nutrients in the sandy land easy to lose, and the water demand for irrigation is large, so it is difficult to achieve Water-saving technical requirements, direct planting of crops, not only the phenomenon of water leakage and fertilizer leakage in the field is serious, but also the growth of crops is poor, land productivity and economic benefits are low, so a large area of ​​sandy land is barren, and land resources are seriously wasted. Improving the capacity of supporting water and fertiliza...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of water-supporting and fertilizing capacity of sandy land and the land occupied by fly ash piled up, the present invention proposes a soil reconstruction method for sandy land

Images