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本文以河西走廊四种农田土壤为对象,采用对比分折方法。阐明土壤微生物的数量与肥力关系。研究表明,该地区农田土壤中微生物种类多,所测的八种微生物均有,且数量大,一克土壤中微生物有几千至几亿个;研究还表明,土壤中微生物的数量多少与有机质含量高低及土壤肥力水平有密切的关系。另一方面,由于微生物菌体含蛋白质高,富有活性物质,随着微生物的增殖,死亡与快速更新,必然对土壤有机质、土壤肥力乃至作物生长产生深刻的影响。
In this paper, Hexi Corridor four kinds of farmland soil as the object, using comparative analysis method. Clarify the relationship between soil microbial quantity and fertility. The study shows that there are many kinds of microorganisms in farmland soil in this region, and all the eight kinds of microorganisms are detected in large quantities. There are thousands to hundreds of millions of microorganisms in one gram of soil. The study also shows that the number of microorganisms in soil is similar to that of organic matter The level of content and soil fertility levels are closely related. On the other hand, due to the high protein content and rich active substance in microbial cells, the microbial growth, death and rapid renewal will have a profound impact on soil organic matter, soil fertility and crop growth.