Nutritionally modified sandy soil for planting

Abstract

The invention discloses nutrient modified sandy soil for planting. The nutrient modified sandy is formed by dissolving a solid organic substance, which can be dissolved in water to form a solution with cohesiveness and adhesivity and then blending the solution with sandy soil and nutrient; the solution can be adhered to sandy soil particles after being blended with sandy soil, and formed modified sand adopts a particle pore structure; after water is evaporated, the solid substance is adhered to the sandy soil particles, and is dissolved in water again when meeting water and is adhered to the sandy soil particles. The nutrient modified sandy soil ensures that general sandy soil forms soil, and thoroughly changes the interaction relation among sandy soil particles, and forms particle pore structures with bonding force (cohesive force); the modified sandy soil is difficult to run away when in use because of the characteristics of cohesiveness and adhesivity; the modified sandy soil is enabled to be as stable as soil and have water and nutrient storage performances, is directly added to nutrient for plant growth, and belongs an ideal desertification control measure; the modified sandy oil can also serve as a measure for utilizing sand resources, such as sand beach, so as to perform planting.

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 characteristics capable of planting plants. 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 ability to retain water and fertilizer is poor, so 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% ...

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

[0022] (3) Fundamental difficulties and existing problems in desertification and sand 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 method is the same as the desert control method, mainly focusing on sand fixation. Regardless of the engineering (mechanical) measures, plant measures and chemical measures, it does not start from improving the properties of the sand itself, but only avoids the movement of the sand to cause damage. 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 and store nutrients. There is still a long way to go before the hopeful "sand turns oasis"

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

[0030] 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 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 sandy soil is unstable and Frequent wind and sand movement, poor sandy soil, insufficient water and difficulty in water retention and temperature adjustment all 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