农业环境科学学报Issue(9)：1749-1754,6.DOI:10.11654/jaes.2014.09.012
苄嘧磺隆对水稻田土壤微生物群落功能多样性的影响
Responses of Microbial Community Functional Diversity to Bensulfuron-methyl in Paddy Soil
摘要
Abstract
A laboratory incubation study was conducted to ascertain the effects of bensulfuron-methyl on soil microbial community function-al diversity in a paddy soil. Bensulfuron-methyl was applied to soil at three rates:0(control), 0.4 mg·kg-1 dry weight soil(the maximum rec-ommended field rate)and 4 mg·kg-1 dry weight soil(ten-fold of the maximum recommended field rate). Soil microbial community func-tional diversity indexes with potential as bioindicators of soil health were measured using BIOLOG Ecoplates at different times after herbi-cide application. The average well color development (AWCD)indicated that the carbon source substrates utilization ability of microbial communities were enhanced at low application rates but inhibited at high application rates. However, bensulfuron-methyl did not show sig-nificant difference from the control soils as exposure time increased. At 96 h, Shannon index, Simpson index and McIntosh index showed that bensulfuron-methyl significantly decreased utilization ability and efficiency of carbon substrates, and number of utilizable carbon sub-strate species by the microbial communities. Principal component analysis(PCA)indicated the soil microbial community structure was shift-ed by bensulfuron-methyl application, but recovered at the end of experiment. These results suggest that bensulfuron-methyl application shifts the soil microbial community structure and function, but they tend to recover as time extends.关键词
苄嘧磺隆/微生物群落/BIOLOG/功能多样性/水稻田土壤Key words
bensulfuron-methyl/microbial community/BIOLOG/functional diversity/paddy soil分类
资源环境引用本文复制引用
张雯雯,徐军,董丰收,刘新刚,向文胜,郑永权..苄嘧磺隆对水稻田土壤微生物群落功能多样性的影响[J].农业环境科学学报,2014,(9):1749-1754,6.基金项目
国家自然科学基金（31000863，31171879）；公益性行业（农业）科研专项 （）
