Method for treating desert by plant type modified sand bodies

Abstract

The invention discloses a method for treating desert by plant type modified sand bodies. The method comprises the following step of: paving the plant type modified sand bodies on the surface of a desert to be treated, wherein the modified sand bodies are formed by dissolving the water-soluble solid state organic substances into water to form a solution with a caking property and the adhesivity, and stirring with plant seeds and sands. After the moisture is evaporated, water-soluble solid-state organic substances can be glued with sands and can be dissolved into the water again after meeting with the water to form the solution with the caking property and the adhesivity to glue the sands. According to the method disclosed by the invention, the common sand bodies can be formed into 'soil', so that the interaction relationship among the sand body particles can be basically changed to form a particle pore structure with binding force (cohesive force); the substances are hard to lose due to the characteristics of the substances such as the caking property and the adhesivity. The sand bodies have the same stability and the same moisture and nutrient storing performance like the soil, the plants can be directly grown after the plant seeds are mixed, and the strong condition can be provided for the growth of the plants, so that the method can be used as an ideal desert treating measure.

Description

technical field [0001] The invention relates to the fields of utilization of sand resources and control of deserts and desertification, in particular to a method for controlling deserts by using modified sand bodies with soil characteristics. Background technique [0002] (1) Desert, desertification and its hazards [0003] Deserts and desertification are the most serious major environmental problems facing mankind today. [0004] The land area of ​​the world is 162 million square kilometers, accounting for 30.3% of the total earth area, of which about 1 / 3 (48 million square kilometers) is arid and semi-arid desert areas, and it is expanding at a rate of 40,000 to 60,000 square kilometers every year. . The desert area has accounted for 10% of the total land area, and 43% of the land is facing the threat of desertification. [0005] my country is one of the countries with the most deserts in the world, and it is also one of the countries seriously endangered by sandstorms ...

AI Technical Summary

Problems solved by technology

However, emulsified asphalt also exists during use because the asphaltene and resin in the asphalt are easily destroyed by oxygen, light, heat, moisture and microorganisms in the atmosphere, and the oil content decreases.

The gradual intensification of this change will lead to the deterioration of asphalt performance, such as the increase of softening point, the decrease of penetration, and the decrease of elongation, so that the united layer gradually becomes brittle, hard, loses plasticity, ages, and eventually cracks and dies. Destroyed by wind erosion, losing sand-fixing effect

[0021] (3) Fundamental difficulties and existing problems in desert and desertification control

However, the sand bodies in the desert are discrete particles, and the fundamental difficulty in desert governance is that the sand bodies in the desert are easy to move, difficult to retain water and store nutrients

Based on the current sand control measures, it is not difficult to find that the existing desert control methods are far from fundamentally solving the two problems of easy movement of the desert and difficulty in water retention and storage of nutrients.

[0023] The existing desert control method is mainly based on sand fixation. Regardless of the engineering (mechanical) measures, plant measures and chemical measures, it does not start from improving the properties of the desert sand body itself, but only avoids the harm caused by the movement of the sand body. Therefore, From the point of view of its method and method, it is still a passive sand control, which can overcome the fluidity problem of the desert to a certain extent or in a short period of time, but it is difficult to fundamentally solve the difficult problem of water retention and nutrient storage in the desert. The "desert into oasis" that people hope is still far away

[0024] ①Engineering (mechanical) measures can temporarily change the physical form (natural existence) of the desert. It is a temporary sand prevention measure. For the hazards of quicksand, it only plays the role of sand-fixing and "curing the surface", and the desert is temporarily tamed , cannot achieve the effect of "curing the root cause", after a long time, the desert will still return to its original appearance

[0029] Plant sand fixation uses the upper part of the plant to block and block sand, and uses the root of the plant to fix sand, which can change the microclimate and microsoil environment to a certain extent. However, the fundamental difficulty of plant sand fixation is that the desert itself is not conducive to plant growth, such as the desert is unstable and sandstorms Frequent exercise, barren desert, insufficient water and difficulty in water retention and temperature regulation all have adverse effects on plants

[0030] Wind and sand movement can cause plants to be harmed by blowing erosion, sand burial and sand cutting. The wind and sand movement can be solved by engineering protection measures and chemical sand fixation. However, the fundamental problem of insufficient water in the desert and difficulty in water retention limits the applicability of traditional plant sand fixation. extremely restrictive