Rhizobium having high-efficiency phosphate dissolving-capability and application thereof

Abstract

The invention discloses rhizobium having high-efficiency phosphate-dissolving capability and an application thereof. The invention firstly discloses the rhizobium having high-efficiency phosphate-dissolving capability, and a microbe preservation number is CGMCC No.14614. The separated rhizobium bacterial strain has strong phosphate-dissolving capability, and has strong nitrogen-fixation capability, and has good nitrogenase activity under drought stress. Under phosphorus deficiency condition, the rhizobium has obvious growth-promoting capability on plant, and can obviously increase the output of medicago sativa. The invention also discloses an application of the rhizobium for increasing the leguminous plants output, increasing the phosphor absorption by the leguminous plants, and increasingthe nitrogen fixation efficiency of the leguminous plants. The invention also discloses an application of the rhizobium in preparation of a phosphate-dissolving bacterial manure or a nitrogen-fixation bacterial manure. The separated rhizobium having high-efficiency phosphate-dissolving capability has an important application prospect for increasing the output of the leguminous plant medicago sativa.

Description

technical field [0001] The present invention relates to an isolated Rhizobium sp. with high-efficiency phosphorus-dissolving ability, and also relates to the application of said rhizobium in increasing the yield of leguminous plant alfalfa, which belongs to the isolation of rhizobium sp. with high-efficiency phosphorus-dissolving ability. and application fields. Background technique [0002] Rhizobium refers to a type of bacteria that can form symbiotic root nodules with leguminous pastures and convert free nitrogen in the air into ammonium nitrogen that can be absorbed and utilized by plants. In addition to nitrogen fixation, rhizobia can promote plant growth through other ways. The main ways are: secrete some special compounds to promote the intake of nutrients by plants; secrete organic acids to make the soil After the insoluble elements are dissolved, plants are easy to absorb, such as phosphate-solubilizing bacteria; secrete growth-promoting substances, such as triindo...

AI Technical Summary

Problems solved by technology

The properties of the existing alfalfa are quite different, and they are at a disadvantage in the competition with indigenous fungi