关键词: 榆林市, 榆林市, 规模化猪场, 母猪, 繁殖性能, 影响因素

Abstract: The paper aims to understand the distribution of microbes in different orchard soil around Harbin, and the relationship between microbes distribution and soil and enzyme properties, microorganisms in 7 different soil samples collected were separated and counted with different culture, the physical and chemical properties of soil and the contents of 6 enzymes were detected concurrently. The results showed that: the microbial quantity and distribution in soil were affected by the difference of soil property and enzyme activity; PCA analysis showed little variation among the soil samples in Mingxing, Changsheng, Wujia and Heping orchard; similarly, samples from Hashan, Wangjia and Hafei orchard showed no obvious diversity; further RDA analysis showed that the major factors affecting microbial quantity and distribution included the soil conductivity, available phosphorus, organic matter and ammonium nitrogen in soil, as well as the phosphatase and sucrase activity. This study provided data for soil microbes investigation and laid a foundation for orchard soil renewal work in the future.