苎麻根际和非根际环境的土壤比较研究

摘要

以6个不同苎麻品种地的土壤为材料,研究了根际和非根际环境的土壤养分、微生物数量、酶活性、pH值及其相关关系.结果表明,根际土壤中大部分的土壤养分、微生物数量、酶活性高于非根际土壤;相关性分析显示,非根际环境中达到显著相关的因子比根际土壤中多.%The dynamic property of soil nutrients, soil microbes, soil enzyme and pH in ramie rhizosphere soil and non-rhi-zosphere soil collected from producing areas of 6 ramie varieties was studied. And the relationship between them was discussed. The results showed that the content of available N, available K, organic matter, total K and water, the numbers of soil bacteria, actinomyces and fungi, the activities of urease and acid phosphatase in rhizosphere soils were all significantly higher than those of non-rhizosphere. Meanwhile, there was significant difference in pH between rhizosphere soil and non-rhi-zosphere soil. The correlations among soil nutrients, soil microbes, soil enzyme and pH in rhizosphere soil were more significant than that in non-rhizosphere soil. It was hypothesized that the ramie root brought about the differences between the rhizosphere soil and non-rhizosphere soil.