Compound microbial agent for acid soil remediation as well as preparation method and application of compound microbial agent

Abstract

The invention provides a compound microbial agent for acidic soil remediation and preparation thereof. The compound microbial agent is prepared from the following raw materials in parts by weight: 20-30 parts of compound minerals, 10-15 parts of kitchen waste fermentation residues, 12-14 parts of egg shells, 10-13 parts of microbial agent fermentation liquor, 8-12 parts of sodium alginate and 4-6 parts of vital gluten. The compound microbial agent has the effects of regulating the acidity of soil, improving the physicochemical properties and micro-ecological environment of the soil, increasing the nitrogen fixation, phosphorus dissolving and potassium dissolving effects of the soil, increasing the nutrient content of the soil, promoting the growth of crops and increasing both production and income.

Description

technical field [0001] The invention belongs to the field of microbial inoculants, and in particular relates to a composite microbial inoculum for acid soil remediation, and a preparation method and application thereof. Background technique [0002] Acidic soil is a general term for soil with low pH value. At present, with the deposition of acid rain and the application of ammonium nitrogen fertilizer, the soil tends to be acidified. The pH value of most acid soils is less than 5.5; loss, resulting in poor soil and unable to meet the normal growth of plants; the change of soil structure caused the reduction of microbial activity in the soil, which affected the decomposition of organic matter in the soil and the circulation of elements such as N, P, and K; the cation exchange capacity in acidic soil decreased , the content of absorbable aluminum in the soil increases, and the excessive absorption of aluminum by plants causes aluminum poisoning, resulting in the imbalance of n...

AI Technical Summary

Problems solved by technology

[0002] Acidic soil is a general term for soil with low pH value. At present, with the precipitation of acid rain and the application of ammonium nitrogen fertilizer, the soil has a trend of acidification. The pH value of most acidic soil is less than 5.5; soil acidification will cause changes in soil structure, soil nutrients Loss causes the soil to be barren and cannot meet the normal growth of plants; the change of soil structure causes the microbial activity in the soil to decrease, which affects the decomposition of organic matter in the soil and the cycle of N, P, K and other elements; the cation exchange capacity in acidic soil decreases , the content of plant-absorbable aluminum in the soil increases, and excessive absorption of aluminum by plants causes aluminum toxicity, resulting in an imbalance of nutrient elements in the plant, resulting in a decrease in crop resistance, crop yield, and quality; The concentration of elements such as heavy metals increases and is absorbed and utilized by plants, affecting plant growth, and even entering our human body through the food chain to endanger health

[0003] The commonly used method of improving acidic soil is to add alkaline substances such as quicklime to the acidic soil as an amendment to improve the pH value of the soil. and other alkaline substances, causing the rapid increase of soil alkalinity, affecting the micro-ecological environment of the soil, and is not conducive to the growth of crops, and as time goes by, the soil will become acidified again

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