Research and Application Progress of Phosphate-solubilizing Microorganisms in Sustainable Agriculture
Phosphorus is one of the essential nutrient elements for plant growth.Soil contains a lot of phosphorus,but most of the phosphorus is fixed by soil and can not be absorbed and utilized by plant.Phosphate-solubilizing microorganisms can convert the fixed phosphorus in soil into absorbable phosphorus to meet the phosphorus demand of plants.It is a trend to develop sustainable agriculture to replace chemical phosphorus fertilizer with phosphate-solubilizing microbial fertilizer.This paper comprehensively summarizes the latest research progress in the types and mechanisms of phosphate-solubilizing microorganisms and the application of phosphate-solubilizing microorganisms in agricultural production.The basic situation of phosphorus-solubilizing microorganisms such as bacteria,fungi and actinomycetes was introduced,and the mechanism of acid hydrolysis and enzymatic hydrolysis was summarized.This paper mainly analyzes the research situation of phosphate-solubilizing microorganisms screened and isolated from three main grain crops of rice,corn and wheat,and expounds the promoting effect of phosphate-solubilizing microorganisms on the growth of various crops.It is proposed that further studies should be carried out on the screening of resistant strains,influencing factors of phosphate-solubilizing effect,population structure,the environment and efficiency of phosphate-solubilizing,and the genetic improvement of strains.It provides a reference for the future research direction of phosphate-solubilizing microorganisms and their application in agricultural production.
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