A preparation method of compound bacteria and its application in improving sandstone soil

Abstract

The invention belongs to the application fields of agricultural technology, environmental protection and ecological improvement, and particularly relates to a method for preparing a composite bacterium and its application in improving sandstone soil. The composite bacterium consists of Bacillus P75, Rhizobium D10 and Bacillus megaterium H3: the composite Bacteria or the biological agent prepared by the composite bacteria can be used to improve the fertility of sandstone soil, promote the growth of alfalfa, increase the organic matter of sandstone soil, increase the ammonium nitrogen and nitrate nitrogen of sandstone soil, increase the available phosphorus and available phosphorus of sandstone soil Potassium, improve the activity of invertase and urease in the sandstone soil.

Description

A preparation method of compound bacteria and its application in improving arsenic sandstone soil technical field The invention belongs to the application field of agricultural technology, environmental protection and ecological improvement, particularly a kind of compound bacteria preparation The method and its application in improving the soil of Pi sandstone. Background technique [0002] The arsenic sandstone specifically refers to the thick layered sandstone, sandstone and sandstone from the Paleozoic Permian, the Mesozoic Triassic, the Jurassic and the Cretaceous. Rock interbeds composed of shale and argillaceous sandstone are mainly distributed in the northern Loess Plateau bordering Shanxi, Shaanxi and Inner Mongolia. Ordos Plateau. Pi sandstone belongs to continental clastic rock series with low diagenesis, poor cementation between sand grains, and low structural strength. It has the characteristics of being as hard as stone without water, soft as mud when ex...

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Problems solved by technology

[0004] Chinese patent CN107488618A discloses a kind of Bacillus megaterium (Bacillus megaterium) H3, which is preserved in the China Type Culture Collection Center. The preservation date is October 10, 2016, and the strain preservation number is CCTCC NO: M2016551; Growth and reduction of heavy metal absorption by crops; Chinese patent CN107937302A discloses a kind of Sinorhizobium meliloti D10 (Sinorhizobium meliloti D10), which is preserved in the China Center for Type Culture Collection, and the preservation date is October 10, 2016, and the strain preservation number is CCTCC NO : M 2016554; can be used to promote the growth of energy plants and combine energy plants to improve heavy metal-contaminated soil; the combined effect of the above two microorganisms alone in the treatment of arsenic sandstone is not good

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