Modified sand soil

Abstract

The invention discloses modified sandy soil. The modified sandy soil is formed by stirring and mixing a solution having a caking property and adhesivity and sand soil, wherein the solution is formed by dissolving water-soluble solid organic matters in water. After the water is evaporated, the water-soluble solid organic matters can conglutinate grains of the sand soil, and when the solid organic matters meet the water, the solid organic matters can again dissolve in the water to form the solution having the caking property and adhesivity so as to conglutinate the grains of the sand soil. The modified sand soil can make general sand soil soil-like, interaction relationship among the grains of the sand soil can be fundamentally changed, and a grain-pore structure having bonding force (cohesive force) is formed. In the course of use of the modified sand soil, matters are hard to lose due to the characteristics of the caking property and adhesivity. The modified sand soil has soil-like stability and the water and nutrient storing properties, can provide solid conditions for plant growth, and is an ideal control measure for the sand soil. At the same time, the modified sand soil can be used as a means of utilization of sand resources such as sand beaches and the like for plant plantation.

Description

technical field [0001] The invention relates to the fields of utilization of sandy soil resources and control of land desertification, in particular to a modified sandy soil with soil properties. Background technique [0002] Sandy soil refers to soil with a lot of sand. The sandy soil is loose and has good water permeability and air permeability, but its water and fertilizer retention capacity is poor, and it needs to be improved during cultivation. Sandy soil is not suitable for the growth of certain plants. When the sand content is high, it is similar to the surface sand or sandy soil in deserts or desertified areas. In addition to natural existence, sandy soil is mostly formed by land desertification. [0003] (1) Desertification and its hazards [0004] Desertification is one of the most serious major environmental problems facing mankind today. [0005] The land area of ​​the world is 162 million square kilometers, accounting for 30.3% of the total earth area, of wh...

AI Technical Summary

Problems solved by technology

However, emulsified asphalt still exists in 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

[0022] (3) Fundamental difficulties and existing problems in desertification control

However, the particles in the sand are discrete particles, and the fundamental difficulty in governance is that the particles in the sand 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 sand and desert control methods are far from fundamentally solving the two problems of easy movement of particles in sand and difficulty in water retention and storage of nutrients.

[0024] The existing sand control methods are the same as the desert control methods, mainly focusing on sand fixation. Regardless of the use of engineering (mechanical) measures, plant measures and chemical measures, they do not start from improving the properties of the sand itself, but only avoid the movement of the sand. Therefore, from the point of view of its methods and methods, it is still passive sand control, which can overcome the problem of desertification to a certain extent or in a short period of time, but it is difficult to fundamentally solve the problem that sandy soil is difficult to retain water, store water and store nutrients. There is still a long way to go for the "sand and soil into an oasis" that people hope

[0025] ①Engineering (mechanical) measures can temporarily change the physical form (natural existence mode) of desert or sandy soil. It is a temporary prevention and control measure. For the hazards of quicksand and sandy soil, it only plays the role of "curing the surface" of sand. Sandy soil If it is tamed for a short time, it cannot achieve the effect of "curing the root cause". After a long time, the desert and sand will still return to their original appearance

[0030] Plant sand fixation uses the upper part of the plant to block sand (soil), retain sand (soil), and use the root of the plant to fix sand, which can change the microclimate and micro soil environment to a certain extent. However, the fundamental difficulty of plant sand fixation is that the sand itself is not conducive to plant growth. , such as unstable sandy soil and frequent wind and sand movement, poor sandy soil, insufficient water and difficulty in water retention and temperature adjustment, etc. will have adverse effects on plants

[0031] 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 sand and difficulty in water retention limits the applicability of traditional plant sand fixation. extremely restrictive