不能将值 NULL 插入列 'id',表 'aje_website.dbo.t_web_site_access';列不允许有空值。INSERT 失败。 语句已终止。 欢迎访问《生态毒理学报》编辑部网站!

首页 | 期刊简介 | 编委会 | 投稿要求 | 化学品管理信息动态 | 学术会议 | 专辑 | 毒理学测试技术设备 | 订购本刊 | 联系我们 | English version

范晓季 1,宋昊 2,孙立伟 3,钱海丰 3,*. 禾草灵对水稻生长和典型土壤酶活性的影响[J]. 生态毒理学报, 2017, 12(3): 20-
禾草灵对水稻生长和典型土壤酶活性的影响
The Effects of Diclofop-Methyl on Rice Growth and Typical Soil Enzyme Activities
  
DOI:10.7524/AJE.1673-5897.20160723001
中文关键词:  禾草灵  水稻  土壤酶活  土壤微生物
英文关键词:diclofop-methyl  rice  soil enzyme activity  soil microbial
基金项目:国家自然科学基金(21277125)
作者单位
范晓季 1,宋昊 2,孙立伟 3,钱海丰 3,* 1. 浙江工业大学生物工程学院杭州 310032 2. 浙江工业大学海洋学院杭州 310032 3. 浙江工业大学环境学院杭州 310032 
摘要点击次数: 411
全文下载次数: 
中文摘要:
      禾草灵是一种广泛使用的除草剂,在土壤中大量残留,对非靶标生物产生危害。为探究除草剂对环境生物的毒性作用,本研究模拟水稻自然生长的环境,评估禾草灵对水稻及土壤微生物的影响。研究结果表明,低浓度禾草灵(200 μg L-1)处理4 d对土壤微生物量没有显著影响(P>0.05);8 d时,水稻生长没有明显变化,但土壤微生物量较对照组显著升高(P<0.05)。高浓度禾草灵(1 000 μg L-1)处理4天后,土壤脲酶、酸性磷酸酶和过氧化氢酶的活性显著下降(P<0.05),下降幅度分别为8.9%,16.6%和10.2%;处理8 d后,水稻幼苗鲜重显著降低(P>0.05),叶绿素a和叶绿素b含量分别下降了13.5%和13.3%。本研究证实高浓度的禾草灵残留会对植物和土壤微生物产生不良的影响。
  
AuthorAffiliation
Fan Xiaoji 1, Song Hao 2, Sun Liwei 3, Qian Haifeng 3,*1. College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China 2. Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310032, China 3. College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
英文摘要:
      Diclofop-methyl, a post emergence herbicide is being used to control weeds (annual grasses and wild oats) in major as well minor crops worldwide. Its subsequent capability of permeation inundate it into surrounding soil and water, exert potential threat on non-target plants and soil microorganisms. We established the rice growth in natural environment to evaluate the effects of diclofop-methyl on rice seedlings and soil microorganisms. The results revealed that low concentration of diclofop-methyl (200μg L-1) caused zero effect on soil microbial biomass after 4 d of exposure (P>0.05), but soil microbial biomass was significantly stimulated after 8 d of exposure (P<0.05). In the groups treated by high concentration of diclofop-methyl (1 000μg L-1), however, the enzyme activities of soil urease, acid phosphatase and catalase decreased by 8.9%, 16.6% and 10.2% of the control after 4 d of exposure, respectively (P<0.05); while after 8 d of exposure, the fresh weight was reduced dramatically, and the content of chla and chlb dereased by 13.5% and 13.3%, respectively (P<0.05). This research verdict that high concentration of diclofop-methyl could affect rice growth and soil microorganism metabolic function.
查看全文  查看/发表评论  下载PDF阅读器
关闭

您是第3512275位访问者   京ICP备 09058833 号

主办单位:中国科学院生态环境研究中心     单位地址:北京市海淀区双清路18号

 服务热线:010-62941072       传真:010-62923563       邮编:100085    Email: stdlxb@rcees.ac.cn

    本系统由北京勤云科技发展有限公司设计

0463美女美女3764美女美女ktv