Pseudomonas fluorescens and application thereof

Abstract

The invention discloses Pseudomonas fluorescens RQ3-01 with an accession number of CGMCC No. 14471. In addition, the invention also discloses the application of the Pseudomonas fluorescens to degradation of poorly-soluble inorganic phosphorus. The Pseudomonas fluorescens of the invention is a dominant strain selected with the poorly-soluble inorganic phosphorus as a phosphorus source, and the strain converts the poorly-soluble inorganic phosphorus into bioavailable soluble phosphate during the growth and reproduction. Moreover, the Pseudomonas fluorescens of the invention also has the functions of degrading organic phosphorus and degrading potassium, can effectively increase the contents of available phosphorus and available potassium in soil, and has the functions of promoting plant growth and increasing yield.

Description

technical field [0001] The invention belongs to the technical field of microorganisms, and in particular relates to a pseudomonas fluorescens and an application thereof. Background technique [0002] Phosphorus is the main component of compounds in plants and is necessary for biological nitrogen fixation. Plant growth and photosynthesis are inseparable from the participation of phosphorus, and it is one of the essential nutrients for plant growth. The application of phosphorus fertilizer is the main way to ensure the yield in agricultural production, but phosphorus fertilizer is easily solidified in the soil, and most of the phosphorus and Ca in the soil 2+ , Fe 2+ , Fe 3+ 、Al 3+ Combined to form insoluble inorganic phosphorus, so more than 95% of the phosphorus in the soil exists in an ineffective form that plants cannot directly use, and the seasonal utilization rate of phosphorus fertilizer is only 5% to 25%. At present, in the process of agricultural production, exce...

AI Technical Summary

Problems solved by technology

The application of phosphorus fertilizer is the main way to ensure the yield in agricultural production, but phosphorus fertilizer is easily solidified in the soil, and most of the phosphorus and Ca in the soil 2+ , Fe 2+ , Fe 3+ 、Al 3+ Combined to form insoluble inorganic phosphorus, so more than 95% of the phosphorus in the soil exists in an ineffective form that plants cannot directly use, and the seasonal utilization rate of phosphorus fertilizer is only 5% to 25%.

At present, in the process of agricultural production, excessive application of chemical fertilizers in order to increase production leads to soil nutritional imbalance and soil quality degradation, which seriously affects the sustainable development of my country's agriculture.

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