江西农业大学学报2012，Vol.34Issue(4)：658-663,6.
连作对植烟土壤微生物群落多样性的影响
Effect of Continuous Cropping on Tobacco Soil Microorganism Community Diversity
摘要
Abstract
Effect of continuous cropping on soil microorganism mechanis is one of hot research issues at present. The effect of continuous cropping on soil microorganism diversity was analysed at the metabolic level by using BIOLOG. The tobacco soil from Chongqing and Henan was analysed and the results indicated: (1) The average well color development(AWCD) of soil microorganism was significantly higher under short -term continuous cropping( continuous cropping years ≤3 years) than 4 and 5 years, this reflected that soil microorganism activities were still high under short - term continuous cropping. ( 2) The Shannon index and Simpson index of soil microorganism were significantly higher under short-term continuous cropping, the Mclntosh index of Chongqing and Henan had the similar law as a whole, the difference of Shannon uniformity index was not significant. (3) The results of principal component analysis ( PC A) indicated that carbohydrates, carbohydrates and carboxylic acids which were the main carbon resources were utilized by soil microorganism of continuous tobacco cropping, the soil microorganism had a higher utilization rate of carbon resource under short-term continuous cropping. The synthetical study indicated that the soil microorganism diversity was higher under short-term continuous cropping, and sharply declined after 4 and 5 years. The test was a part of the research of soil health mechanism, and can provide new ways for sustainable use of soil and control of soil-borne dieases关键词
连作烟草/土壤微生物多样性/碳源利用/BIOLOG分析Key words
continuous cropping tobacco/ diversity of soil microorganism/ ultilization of carbon resource/ BIOLOG analysis分类
农业科技引用本文复制引用
何川,刘国顺,蒋士君..连作对植烟土壤微生物群落多样性的影响[J].江西农业大学学报,2012,34(4):658-663,6.基金项目
河南省烟草公司科技攻关项目(HYKJ200814)和重庆市烟草公司科技攻关项目(2008YY01009) （HYKJ200814）
