Nitrogen fixing and phosphate solubilizing growth-promoting bacteria for desert plants and microbial agent and application thereof

Abstract

The invention discloses microorganism nitrogen-fixing bacteria. The microorganism nitrogen-fixing bacteria is classified and named as microbacterium trichothecenolyticum SPJ01, and is conversed in China Center for Type Culture Collection, the culture conversation number is CCTCC NO:M2016254, and the conservation date is May 6 th, 2016; the application of the microorganism nitrogen-fixing bacteriain soil provides nitrogen elements and phosphorous elements for crops, and relieves the inhibition of growth due to nitrogen deficiency and phosphorous deficiency; the microorganism nitrogen-fixing bacteria serves as a nitrogen-fixing growth-promoting microbial agent in a desert area. The growth inhibition of the crops under the condition of nitrogen deficiency and phosphorous deficiency can be relieved; meanwhile, the crops have an obvious promoting effect on the growth of crop seedlings, and various growth indexes of two kinds of forage like the plant height, the root length, the single leafarea, the single plant leaf number, the root size, the plant size, the overground fresh dry weight, the underground fresh dry weight, the plant fresh dry weight, the root shoot ratio (R / T) and the dry fresh weight (D / F) are all obviously improved.

Description

technical field [0001] The invention relates to a nitrogen-fixing, phosphorus-decomposing, growth-promoting bacterium that can be used for desert plants, a bacterial agent and its application, and belongs to the technical field of microorganisms. Background technique [0002] As essential mineral elements for plants, nitrogen and phosphorus are important components of various structural and functional substances such as proteins, nucleic acids, phospholipids, enzymes, and plant hormones in plant living cells. It plays an important role in the process of gene expression and regulation and cell signal transduction. The lack of nitrogen and phosphorus will inhibit the growth and development of plants, cause some deficiencies, and even fail to complete their life cycle. Long-term large-scale application of chemical fertilizers not only increases the cost of agricultural production, but also causes the selective accumulation of certain elements in the soil and the deterioration ...

AI Technical Summary

Problems solved by technology

Although the efficiency of symbiotic nitrogen fixation by rhizobia is higher than that of combined nitrogen fixation, it has a high degree of host specificity, which limits its application in non-host leguminous forages and non-legume forages

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