Degradable integrated seed-fertilizing soil desertification control method

Abstract

The present invention discloses a degradable integrated seed-fertilizing soil desertification control method. The method comprises the following steps: 1, adding a binder solution prepared from a polymer water-soluble bio-based binder and water to a seed-fertilizing soil mixture composed of a water-soluble fertilizer containing humic acid, grass seeds and sand soil, and stirring the materials evenly to obtain prefabricated seed-fertilizing soil granules; 2, preparing a natural polymer material solution and a crosslinking agent solution; 3, spraying the crosslinking agent solution on surfaces of the prefabricated seed-fertilizing soil granules to obtain a prefabricated seed-fertilizing soil granule semi-product; 4, adding the prefabricated seed-fertilizing soil granule semi-product into thenatural polymer material solution to obtain seed-fertilizing soil gel; and 5, after water-soaking the seed-fertilizing soil gel, spraying the water-soaked seed-fertilizing soil gel on a sand surfacelayer. Water absorption and water retention characteristics of the gel are utilized to provide humidity and temperature conditions for grass seeds, the survival rate of the grass seeds is improved, problems that water and fertilizer retention performance of sand land is poor and large temperature differences cause difficult growth of the grass seeds are solved, and the degradable integrated seed-fertilizing soil desertification control method is suitable for control for degradation grassland, mobile sand, semi-mobile sand and fixed sand.

Description

technical field [0001] The invention belongs to the technical field of sand control, and in particular relates to a sand control method of degradable integrated fertilizer and seed soil. Background technique [0002] Land desertification refers to the phenomenon that due to soil erosion, the surface soil loses fine particles (silt, clay) and gradually becomes sandy, or due to the invasion of quicksand (sediment), the organic matter content of the land decreases, and the productivity decreases or even loses. The causes of land desertification include natural factors such as climate, as well as human activities such as overgrazing, deforestation, land reclamation, rat infestation, and irrational use of water resources. [0003] The commonly used methods to control land desertification include enclosure and natural recovery, grass grids for sand-fixing and grass planting, and liquid mulch, all of which have good control effects. However, the period of fence enclosure is long, ...

AI Technical Summary

Problems solved by technology

In this method, the natural polymer water-absorbing material gel is coated on the prefabricated fertilizer soil aggregate composed of humic acid water-soluble fertilizer, grass seeds and sandy soil to form a fertilizer soil gel, and the water absorption and water retention characteristics of the gel are utilized. Provide continuous and stable humidity and temperature conditions for grass seeds, improve the survival rate of grass seeds, and solve the problem that grass seeds are not easy to grow due to lack of soil structure, poor water and fertilizer retention performance, and large temperature difference in sandy land. It is used for sand control in degraded grassland, mobile sand, semi-mobile sand and fixed sand