期刊论文

中文

环境科学学报

0253-2468

2008

28

2

326-330

10.3321/j.issn:0253-2468.2008.02.016

国家“十五”粮食丰产科技工程项目（No2004BA520A01）； 湖南农业大学稳定人才基金项目~~；

本校为第一机构

为了探讨稻草还田的微生物学过程与效应，借助平板涂抹法和BIOLOG检测法，比较研究了免耕条件下3种不同稻草还田量（33％、67％和100％，以稻草不还田土壤为对照）对晚稻田土壤微生物群落功能多样性的影响，结果表明：①土壤细菌数量差异显著，以67％稻草还田处理为最高，稻草不还田处理最低，稻草还田提高了土壤细菌数量；②碳源平均颜色变化率（AWCD法）在培养早期各处理间的差异不大，但随着培养时间的延长，67％和100％稻草还田处理土壤微生物的AWCD值显著大于对照和33％稻草还田处理组；③土壤微生物代谢多样性指数（丰富度和多样性）在3种稻草还田量处理土壤中也表现出明显差异，67％和10...

To evaluate the effects of returning rice-straw to the field on the soil microbial community, the soil microbial communities under three proportions of rice-straw returning to the field （T1：33% ; T2：67%; T3：100%;CK：0） were measured. Bacterial amount and metabolic diversity （BIOLOG） assays were performed and significant differences were found in bacterial amount among the three treatments. The two indicators were the highest in T2, and lowest in CK. In the BIOLOG assays, average well colour development （AWCD） and the indices of richnes...