Pleiotropic soil conditioning agent

Abstract

The invention discloses a pleiotropic soil conditioning agent. The conditionering agent is prepared from the following raw materials: 30 to 40 parts of ore, 10 to 20 parts of microbial flora, 30 to 40parts of polyacrylamide, 25 to 35 parts of phenolic resin, 5 to 15 parts of polymethyl methacrylate, 10 to 20 parts of oyster shell powder, 10 to 20 parts of polyvinyl alcohol, 10 to 20 parts of polyvinyl acetate, 5 to 10 parts of ammonium sulfate, 20 to 30 parts of rice hull char, 2 to 6 parts of desulfurized gypsum, 5 to 15 parts of traditional Chinese medicinal residues, 5 to 10 parts of bagasse and 5 to 15 parts of corn straw. By adopting a double biological and chemical combined regulation mode to improve the soil, multiple efficaciesy of pH value regulation of barrier soil, microecological regulation, granular structure regulation, cured nutrient activity regulation and resorption of harmful metal elements in passivative soil are achieved.

Description

technical field [0001] The invention relates to the field of soil improvement, in particular to a multi-effect soil conditioner. Background technique [0002] Acidic soil is soil with a pH less than 7. In recent years, with the unreasonable large-scale application of inorganic chemical fertilizers, the area of ​​acidified soil has increased year by year, and the degree of soil acidification has accelerated significantly. At the same time, due to the influence of continuous planting mode, climate and other factors, the area of ​​acidic soil in my country has reached 200 million hectares. . Soil acidification has the following effects on crop production: first, it destroys the soil structure, causes compaction, reduces soil permeability and microbial activity, and makes the soil poor; second, it leads to an increase in the content of aluminum ions in the soil, causing crops to The yield is reduced, the quality is reduced, and even lead to death due to aluminum poisoning; the ...

AI Technical Summary

Problems solved by technology

Soil acidification has the following effects on crop production: first, it destroys the soil structure, causes compaction, reduces soil permeability and microbial activity, and makes the soil poor; second, it leads to an increase in the content of aluminum ions in the soil, causing crops to The yield is reduced, the quality is reduced, and even lead to death due to aluminum poisoning; the third is to increase the activity of heavy metal ions in the soil, making it easier to be absorbed by crops, aggravating the harm of heavy metals, and then endangering human health

At present, the soil conditioners traditionally used to improve acidic soil are mainly lime and alkaline industrial waste. Although these substances can reduce soil acidity, excessive or uneven application will cause local calcification, damage soil microorganisms, and affect soil structure. And it cannot meet the needs of crops for medium and trace element fertilizers at the same time

In addition, some people use alkali slag, mushroom slag, calcium magnesium phosphate fertilizer, etc. as improvement materials for acidic soil, and have achieved certain improvement and yield increase effects. Disadvantages such as high transportation costs make it difficult to popularize and apply in large areas in agricultural production

At present, the existing soil conditioner products are mainly mineral soil conditioners, which are obtained by calcining and pulverizing the ore at high temperature to obtain alkaline powder. Problems such as short effective time, single adjustment function, and limited adjustment effect

However, the research on polymer compounds is mostly focused on water retention performance, crop yield increase, etc., and there are few studies on the impact of polymer compounds on soil aggregates.

Due to the poor water solubility of most polymer materials, they are mostly applied in holes, furrows or sprinkled, which not only increases the labor cost, but also greatly reduces the actual use effect