文献类型： 外文期刊

作者： Huang, Wuren ¹ ; Bai, Zhihui ¹ ; Hoefel, Daniel ³ ; Hu, Qing ¹ ; Lv, Xin ¹ ; Zhuang, Guoqiang ¹ ; Xu, Shengjun ¹ ; Qi, Ho ¹ ;

作者机构： 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China

2.Chinese Acad Trop Agr Sci, Inst Environm & Plant Protect, Danzhou 571737, Peoples R China

3.S Australian Water Corp, Australian Water Qual Ctr, Adelaide, SA 5000, Australia

4.Univ Adelaide, Sch Earth & Environm Sci, Adelaide, SA 5000, Australia

关键词： cotton straw;soil amendments;microbial diversity;Biolog;phospholipid fatty acid;16S rRNA gene clone library

期刊名称：FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING （ 影响因子：4.357； 五年影响因子：3.688 ）

ISSN： 2095-2201

年卷期： 2012 年 6 卷 3 期

页码：

收录情况： SCI

摘要： Maintaining soil fertility, while controlling pollution from excessive chemical fertilizer application is important for keeping soil productivity of sustainable agriculture. Variety of straws have been used and proven to be good soil amendments for increasing soil organic matter (OM) and a range of additional soil nutrients. However, little is known about the utilization of cotton straw for soil amendment. To better understand the mechanism behind cotton straw soil amendments, investigations were performed upon cucumber seedlings, where changes to soil nutrients and microbial communities were investigated. The results revealed that the cotton straw application promoted the cucumber seedling growth by significantly increasing the soil OM, available nitrogen, available phosphorus, and available potassium. The concentration of cotton straw was positively correlated to both the number of the culturable microorganisms and also the total microbial biomass within soil. Furthermore, assessment of cotton straw application using Biolog metabolic profiling and phospholipid fatty acid analysis revealed that such application increased the microbial community metabolic activity, and markedly changed the structure of microbial community. 16S rRNA gene clone library construction and phylogenetic analysis of soil bacteria revealed gamma-Proteobacteria sequences dominated the cotton straw amendment soil, comprising 27.8% of the total number of analyzed sequences, while they were less represented in control soil (13.4%). On the contrary, the Sphingobacteria (7.8%) and Verrucomicrobia (2.4%) in the cotton straw amendment soil decreased after application when compared to the control soil 15.2% and 15.2%.