期刊论文

中文

土壤通报

0564-3945

2014

45

6

1390-1395

10.19336/j.cnki.trtb.2014.06.016

湖南省自然科学基金(2015JJ4012) 国家林业公益性行业科研基金(201304310) 湖南省科技计划(2010SK2004) 湖南省教育厅项目(13C118)资助

本校为第一机构

为研究促生细菌对镉污染土壤微生物数量和酶活性的影响,将促生细菌T7和J2加入洞庭湖镉污染土壤中,通过培养,进行各项目的测定。结果表明,J2菌能显著提高土壤中可培养细菌、放线菌数量,降低土壤中可培养真菌数量,T7菌对放线菌数量影响不明显,T7和J2菌能显著提高细菌 / 真菌(B/F)和放线菌 / 真菌(A/F)比值;J2菌能显著地促进土壤中氨化菌、硝化菌、反硝化菌和好氧性固氮菌数量的增加,T7菌对氨化菌和反硝化菌数量影响不显著;J2菌明显促进土壤中脲酶、过氧化氢酶和磷酸酶活性的增强,T7菌对脲酶、过氧化氢酶活性影响显著;土壤微生物数量与酶活性的相关性分析表明,土壤微生物、酶以及土壤微生物与酶之间...

The objective of the experiment was to determine the effects of plant growth-promoting bacteria on the microbial population and enzyme activities in cadmium contaminated soil. Strains T7 and J2 were added to cadmium contaminated soil of Dongting Lake. And different indicators were measured by cultivating method. The results showed that the culturable bacteria, actinomycetes counts increased distinctly, and the culturable fungi counts declined obviously under strain J2 condition, and actinomycetes increased insignificantly by strain T7.In addition, the bacterial/fungi and actinomycetes/fungi ra...