Soil improvement agent, preparation method, application and application method thereof

Abstract

The invention belongs to the technical field of soil improvement, and relates to a soil improvement agent, a preparation method, application and an application method thereof. The soil improvement agent provided by the invention is prepared from perlite, vermiculite, animal excrement, gypsum, a porous mineral material and an iron salt solution, wherein the addition amount of the perlite is 4 to 6parts by volume; the addition amount of the vermiculite is 8 to 12 parts by volume; the addition amount of the animal excrement is 4 to 6 parts by volume; the addition amount of the gypsum is 0.1% to1.0% of the total mass of the perlite, the vermiculite and the animal excrement; the addition amount of the porous mineral material is 1 to 3 parts by mass: and the addition amount of the iron salt solution is 6 to 8 parts by volume. The soil improvement agent can be used for increasing the field-planting survival rate of a ground cover plant in saline and alkaline land, and on the basis of ensuring quick soil improvement and an improvement effect, is matched with field planting and a management measure; the high cost for the engineering improvement of the saline and alkaline land is decreased; and the benefit and the efficiency of the ecological restoration of the saline and alkaline land are increased.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and specifically relates to a soil improver, a preparation method, an application and an application method thereof. Background technique [0002] Saline-alkali soil is a general term for saline soil, alkaline soil and various salinized and alkaline soils. In addition, saline-alkali soil has disadvantages such as high pH value, low fertility, harmful salt content, poor air permeability, and easy hardening, which often lead to plant physiological drought. The occurrence of nutrient substances affects the normal absorption of nutrients by plants, especially restricts the absorption of potassium, phosphorus and other nutrient elements by plants. At the same time, high soil bulk density is not conducive to the air circulation in the root system of plants, resulting in an imbalance between the release and absorption of plant nutrients. , ultimately detrimental to plant growth. In addition, t...

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Problems solved by technology

However, the disadvantage of this type of method is that in the actual application process, the amount used per mu of land reaches 100-150kg, which not only increases the capital consumption of saline-alkali soil engineering improvement, but also applies a large amount of amendments at one time, which may cause planting plants to burn. The emergence of seedling phenomenon reduces the practicability of the improver; the improver does not take into account the phenomenon of soil returning to salt and alkali in the later stage

7. The patent with the publication number CN106190152 A discloses a saline-alkali barrier material of attapulgite and the in-situ engineering treatment and repair method of saline-alkali land. The method of planting Populus canadensis in saline-alkali soil with agent planting, the patent publication number of which is CN106605468 A discloses a method for covering and greening saline-alkali land. The disadvantages of these methods include that they must be used in combination with other saline-alkali soil improvers, which increases the The capital consumption of improvement, the effect is slow and time-consuming, the workload of soil improvement is heavy, and the cost is high

[0005] In short, for the current saline-alkali soil improvement methods, the chemical amendments have the characteristics of using industrial waste as raw materials, mixing various types of raw materials, and refining raw materials, so that they can provide nutrients, reduce pH, and reduce salt content. However, it also increases the cost of soil improvement in terms of raw material consumption and processing; the comprehensive application of physical and chemical amendments has obvious soil improvement effects, but the improvement method involves burying salt discharge pipes, a large number of The application of amendments and other aspects has significantly increased the amount of soil improvement projects and increased the cost of soil improvement funds; the biological improvement of soil beneficial bacteria has solved the problems of soil nutrition and compaction from the perspective of soil microecology, but the beneficial bacteria Cultivation requires better facilities and cultivation technology; although the biological improvement combined with planting and improving agent has good potential in improving saline-alkaline soil, the combination of planting of different types of plants and different improving agents will lead to the improvement effect of soil. Significantly different from funding burn

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