Pseudomonas brassicacearum Y1, culture method and application thereof, and soil conditioner

Abstract

The invention provides a pseudomonas brassicacearum Y1, a culture method and application thereof, and a soil conditioner. The invention discloses pseudomonas brassicacearum Y1 for the first time, and the preservation number is CGMCC (China General Microbiological Culture Collection Center) No.20127. The pseudomonas brassicacearum Y1 has relatively strong capabilities of dissolving phosphorus, dissolving silicon, dissolving potassium, fixing nitrogen, producing IAA and resisting salt and alkali, can also produce siderophore ACC deaminase, and has oxidase and catalase activity and weak nitrate reductase activity; and the Y1 has a certain antagonistic effect on some phytopathogens. The pseudomonas brassicacearum Y1 is compounded with trichoderma and other components to obtain the soil conditioner, and the soil conditioner can promote the increase of nutrient elements such as available phosphorus, silicon and potassium in soil and promote balanced absorption of nutrients of crops. Tests show that the soil conditioner has an obvious improvement effect on desert soil in China.

Description

technical field

[0001] The invention relates to the technical field of agricultural microorganisms, in particular to Pseudomonas rape Y1, a cultivation method and application thereof, and a soil improver. Background technique

[0002] my country's desertified land area is 1.7212 million km 2 (2014), accounting for 17.93% of the country's land area, with a desertification area of ​​2.6116 million km 2 , accounting for 27.25% of the country's land area. These lands are important cultivated land resources that can be developed. If they can be used, it will not only alleviate the tension of our country's cultivated land resources, but also fully turn various wastes into resources and achieve resource recycling. Restoring the fragile ecological environment plays a key role. How to convert it into arable land requires improvement of these barrier lands, and soil improvement technology also requires the cooperation of improvement substances, which are called soil amendments (soi...

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