Special compound microbial fertilizer for corn top dressing

Abstract

Special compound microbial fertilizer for corn top dressing comprises double-strain bacterial fertilizer, potassium humate and urea, and is used for top dressing in a five-leaf stage or a bell stage of corn; double strains subjected to mixed fermentation have a significant synergetic effect; an ear bald rate of the corn can be decreased; the row number per ear, the grain number per row, the grain number per ear and the thousand grain weight of the corn are increased; and the yield is increased by 7.3-21.6% as compared with that of different processing control groups.

Description

technical field [0001] The invention relates to the technical field of microbial bacterial fertilizer, in particular to a special compound microbial fertilizer for corn topdressing. Background technique [0002] Corn is the main crop in my country. It likes water and fertilizer. Field management requires topdressing at the 5-leaf stage and bell mouth stage. Urea is commonly used for topdressing corn. Long-term large-scale application of urea will accumulate a large amount of ammonia ions in the soil, resulting in soil pH The increase will reduce the number of beneficial microorganisms, reduce the permeability of the soil and the ability to maintain the balance of nutrients, resulting in poor growth of crops, reduced yield, reduced quality, and increased pesticide residues. The resulting soil pollution is getting worse day by day. The use of chemical fertilizers such as urea, the development of microbial fertilizers, the improvement of crop quality, and the protection of soil h...

AI Technical Summary

Problems solved by technology

[0002] Corn is the main crop in my country. It likes water and fertilizer. Field management requires topdressing at the 5-leaf stage and bell mouth stage. Urea is commonly used for topdressing corn. Long-term large-scale application of urea will accumulate a large amount of ammonia ions in the soil, resulting in soil pH The increase will reduce the number of beneficial microorganisms, reduce the permeability of the soil and the ability to maintain the balance of nutrients, resulting in poor growth of crops, reduced yield, reduced quality, and increased pesticide residues. The resulting soil pollution is getting worse day by day. The use of urea and other chemical fertilizers, the development of microbial fertilizers, the improvement of crop quality, and the protection of soil have become issues of common concern in our country and even in the world today.

Microbial fertilizers are a type of fertilizer products containing specific active microorganisms. There are many types of microbial fertilizers. According to the mechanism of action of microorganisms, they can be divided into rhizobia fertilizers, autogenous nitrogen-fixing bacteria fertilizers, phosphorus-dissolving bacterial fertilizers, potassium-dissolving bacterial fertilizers, and antibiotic fertilizers. Microbial fertilizers can decompose insoluble phosphorus minerals in the soil, release the phosphorus in them, decompose the organic matter in the soil, turn organic phosphorus into inorganic phosphorus that can be absorbed and utilized by plants, provide effective phosphorus for crops, and decompose silicate minerals And release potassium and other elements for plants to use, as well as N in the air 2 Restored to NH4 that can be absorbed and utilized by crops + However, these microbial fertilizers also have some problems, such as single strain, low number of live bacteria in the product, few varieties, random strain compatibility, poor use effect, slow synergy, and limited use of symbiotic nitrogen-fixing bacteria host specificity range, etc. These problems lead to slow fertilizer effect of microbial fertilizers, no obvious effect of increasing production, and hindered promotion. Therefore, most microbial fertilizers are only used as base fertilizers, and there are very few fast, efficient and long-lasting microbial fertilizers for topdressing. There are fewer types of compound microbial fertilizers, and there have been no reports on compound microbial fertilizers for corn topdressing

Images