农业机械学报2013，Vol.44Issue(2)：103-108,141,7.DOI:10.6041/j.issn.1000-1298.2013.02.020
土壤低含量铅时冬小麦幼苗根际微生物群落的变化
Changes of Microbial Communities in Rhizosphere of Winter Wheat Seedlings under Low Lead Content
摘要
Abstract
Pot experiments were conducted to investigate the effect of low lead content ( < 300 mg/kg dry soil) on winter wheat seedlings rhizosphere microorganisms. Compared to the control, the number of bacterial decreased significantly (p <0. 01 ) by 16. 25% at the third week and by 8. 62% at the seventh week, and the number of fungi in low lead content decreased significantly (p < 0. 01) by an average of 34. 08% , 39. 89% and 17. 49% at the third week, seventh week, and twelfth weeks, respectively. The actinomyces amount in low lead content decreased significantly (p < 0. 01) at the seventh and twelfth weeks. The correlation between the number of fungi and lead content was significant (p < 0. 01 ) at the third week and the number of actinomyces, the fungi and the total microbial had significant (p < 0. 05 ) correlation to the lead content at the seventh week. In the three growth stages, fungal/bacterial population ratio decreased evidently and the microbial functional diversity changed evidently in low lead content. In conclusion, soil microbial population and community in the rhizosphere of winter wheat seedlings were affected significantly by low lead content.关键词
冬小麦/低含量铅/根际土壤/微生物/微生物代谢功能多样性Key words
Winter wheat Low lead content Rhizosphere soil Microorganism Microbial functional diversity分类
农业科技引用本文复制引用
贾夏,董岁明,周春娟..土壤低含量铅时冬小麦幼苗根际微生物群落的变化[J].农业机械学报,2013,44(2):103-108,141,7.基金项目
国家自然科学基金资助项目(31000222、31270665)和中央高校基本科研业务费专项资金资助项目(CHD2012JC041) （31000222、31270665）
