Sand modification method suitable for high-wind-erosion and high-water-erosion areas

Abstract

The invention provides a sand modification method suitable for high-wind-erosion and high-water-erosion areas. The method includes: respectively drying various sludge rich in bacteria, various decayed straw, forest litter powder or forest soil rich in actinomycetes and fungi, organic flocculants at normal temperature, and mixing the same to obtain mixture, and storing; well mixing the mixture with local clay minerals, decomposed coal or humus soil, cross linking with water solution with cross-linking agent at normal temperature to form flocculent mixture, and crushing particles to form microorganism / microorganism cultivation medium cluster; mixing microorganism / microorganism cultivation medium cluster, plant straws, and soil with nitrogen-fixing bacteria, plowing with sand, and pouring 5-50 kilos of starch or molasses water solution to each mu of sand to activate microorganisms. The sand modified by the method is high in water retention, high in wind and water erosion resistance and low in cost.

Description

【Technical field】 [0001] The invention relates to a method for improving sandy land suitable for areas with high wind erosion and water erosion. 【Background technique】 [0002] In areas with high wind erosion, such as most deserts and seaside dunes, and areas with high water erosion, such as most river beaches and soil erosion areas, the fine particle components of the soil are prone to segregation and stratification under vibration, and become fluids (such as in deserts). The wind, surface runoff and heavy water) are separated, and the separated fine particles are deposited in the distance to form loess areas and siltation areas, while leaving coarse particles in situ to form sandy or gravel-rich land. Generally, loess areas and siltation areas are easy to use, but desertification areas have a large area and harsh natural conditions, so it is not easy to use them on a large scale at present. [0003] Since the growth of higher plants requires higher soil water content and ...

AI Technical Summary

Problems solved by technology

[0011] The problem of this invention is: under the action of wind erosion, the sedimentary rock and soil are easily separated from the sand to form sandstorm material because of the small particles, and the soil is separated from the sand and floats to the surface during flood irrigation or heavy rain, resulting in wind erosion and surface compaction; Lack of microorganisms and humus, actually poor soil fertility due to lack of ecological links; the advantage of lower cost is also offset by the larger amount of inferior clay (transportation costs increase accordingly)

But there are also coarse and fine particles that are easy to separate, poor wind erosion resistance, high cost (mainly because humic acid compound fertilizer is an expensive industrial product), long transformation time, and also uncompetitive