Soil-based crack-proof water-retaining composite material and preparing method thereof

Abstract

The invention discloses a preparing method of a soil-based crack-proof water-retaining composite material. The preparing method comprises the steps that biological glue / starch dust is added into clayor loess, after the clay or loess and the biological glue / starch dust are evenly mixed, running water is added, and stirring is conducted for full acting; the soil-based crack-proof water-retaining composite material is obtained after granulation and drying. The microscopic surface of the composite material is relatively compact, the cohesiveness between particles is improved, and pores are small,so that water molecules difficultly pass through the composite material while the soil-based high-molecular composite material is not prone to cracking, and the crack-proof and water-retaining effects are achieved. The biological glue and the starch material have the advantages of being renewable, biodegradable and free of toxicity, and secondary pollution to land is avoided; by means of the soil-based high-molecular composite material, one part of rain can be stored, soil infiltration is improved, less runoff is generated, the soil moisture content is increased, and water and soil loss and nutrient depletion are effectively prevented.

Description

technical field [0001] The invention relates to a polymer water-retaining material, in particular to the preparation of a soil-based anti-cracking water-retaining composite material, which belongs to the technical field of composite materials and the field of water and soil conservation. Background technique [0002] my country is one of the countries lacking in water resources in the world. The arid and semi-arid areas account for 47% of the total land area. Even in areas with more precipitation in the south, there are seasonal and regional water shortages. In addition, my country is still a large agricultural country. The agricultural water consumption is about 400 billion cubic meters, accounting for about 70% of the total water consumption, of which the water consumption for farmland irrigation is about 360-380 billion cubic meters, accounting for about 90% of the total agricultural water consumption. However, the current average utilization rate of irrigation water in my...

AI Technical Summary

Problems solved by technology

However, the use of mulch (or water-permeable mulch) has three significant defects. One is that the mulch cannot be degraded, and a large amount of mulch will cause white pollution; the other is that it is expensive and the production cost is high; In the field, the environment of the sandy land is further deteriorated; Fourth, in the windy and sandy environment, it is very difficult to lay and preserve the plastic film

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