Microbial fertilizer for improving saline alkali soil and increasing fertility and preparation method thereof

Abstract

The invention discloses a microbial fertilizer for improving saline alkali soil and increasing fertility and a preparation method thereof. The microbial fertilizer is composed of a base fertilizer, an improved fertilizer and nutrition powder with fertility-increasing target microorganisms, wherein the base fertilizer is common farmyard manure; the improved fertilizer is phosphogypsum powder; the target microorganisms comprise halophilic alkali-tolerant abiogenous azotobacter, white rot fungi and saline-alkali-tolerant phosphorus-solubilizing bacteria; the nutrition powder is composed of soybean powder, corn meal and rice bran; and the microbial fertilizer comprises 120-150 parts by weight of common farmyard manure, 1-2 parts by weight of phosphogypsum powder and 10-12 parts by weight of nutrition powder with target microorganisms. The microbial fertilizer disclosed by the invention can reduce the soil salinity and alkalinity and increase the soil fertility, realizes functional complementation of various effective microorganisms, achieves a favorable comprehensive treatment effect, and has a long treatment period.

Description

technical field [0001] The invention relates to the field of agricultural planting, in particular to a microbial fertilizer for saline-alkali soil improvement and fertilization and a manufacturing method thereof. Background technique [0002] Saline-alkali land is a type of salt accumulation, which means that the salt contained in the soil affects the normal growth of crops. According to the incomplete statistics of UNESCO and FAO, the area of ​​saline-alkali land in the world is 954.38 million hectares, of which my country is the largest 99.13 million hectares. The formation of alkaline soil and alkalized soil in my country is mostly related to the accumulation of carbonate in the soil, so the degree of alkalization is generally high, and plants in severe saline-alkali soil areas can hardly survive. [0003] Microbial fertilizer refers to a type of biological agent that contains living microorganisms and can obtain specific fertilizer effects during use to increase plant yi...

AI Technical Summary

Problems solved by technology

[0004] Among the relevant patents that have been applied in China, the patent "Method for Microbial Ecological Improvement of Saline-Alkali Land" (application number: 201510984701.8, publication date: 2016-05-25) discloses a method for microbial ecological improvement of saline-alkali land, using Lactobacillus Lactobacillus, Streptomyces flavinus, Candida utilis, Bacillus subtilis, Rhodopseudomonas palustris and thermophilic actinomycetes were used as target microorganisms, and then added to the microbial ecological fertilizer of the organic matrix, but the fertilizer used Most of the microorganisms cannot adapt to the high-saline environment (for example: the growth of lactobacillus and yeast generally has a pH value of about 5), so the treatment time is short, and it is limited by the life activities and products of these bacteria. This microbial ecological fertilizer It does not reduce the salinity of the soil, and all the bacteria mentioned in the patent are not good at decomposing organic matter into inorganic matter, and cannot increase soil fertility. All microorganisms have similar functions, so they are not complementary to each other. Comprehensive The treatment effect is not good; the patent "A Green Microorganism Saline-alkali Soil Improver for Agriculture" (Application No.: 201010131080.6, Publication Date: 2011-09-28) discloses a method comprising photosynthetic bacteria, yield-increasing bacteria, lactic acid bacteria, actinomycetes and subtilis The alkaline fertilizer of Bacillus, because this fertilizer itself is alkaline, it is not helpful to reduce the salinity of the soil. At the same time, because the specific genera of most of the functional bacteria are not disclosed, a complete technical solution cannot be formed (for example: photosynthetic bacteria There are many types of actinomycetes, including acid-resistant, alkali-resistant and neutral, and some are even toxin-producing bacteria)