【作者】 张翰林； 张卫； 那明远； 曹林奎；

【Author】 ZHANG Han-lin1,2,ZHANG Wei2,NA Ming-yuan2,CAO Lin-kui2*(1.School of Environmental Science and Engineering,Shanghai Jiaotong University,Shanghai 200240,China;2.Key Laboratory of Urban Agriculture,Ministry of Agriculture.,Shanghai 200240,China)

【机构】 上海交通大学环境科学与工程学院； 农业部都市农业(南方)开放重点实验室；

【摘要】 本研究通过4种不同的施肥处理后,取0~10 cm和10~20 cm两层土壤进行微生物多样性分析,并在人工土壤中进行DON降解试验,试验结果显示:有机肥能够改良土壤结构,调节土壤pH,提高土壤有机质含量;在上层土壤中,有机肥处理的稻田土壤Shannon-Weaver指数和均匀度指数均为最大,分别为1.64和0.71;在10~20 cm土层中,无机肥处理的最大,分别为2.21和0.77;稻田土壤微生物多样性与有机肥施用的量和土壤有机质含量有着显著正相关,与pH值呈显著负相关;DON降解试验中,前15 d有机肥处理的土壤中DON浓度略低于无机肥处理和混施肥处理,但22 d后三者之间并无太大的区别。更多还原

【Abstract】 The paper processes in four different ways,analyses the diversity in two parts 0~10 cm and 10~20 cm,tests in the degradation of DON in artificial soil,then get the conclusion: Organic fertilizer treatment can increase the soil structure,adjustment the soil pH and increase the content of soil organic matter;In the upper soil,the Shannon-Weaver and the evenness index in OT ranks the top: 1.64 and 0.71.In the lower soil,the Shannon-Weaver and the evenness index in CT ranks the top: 2.21 and 0.77;The diversity of soil microorganisms in paddy field has a positive correlation with the volume of the OT and the soil organic matter;has a negative correlation with the pH;The DON of the OT group is less than the CT and MT group in the first 15 days,and it makes no difference after 22 days.更多还原