|本期目录/Table of Contents|

[1]陈天明,殷春涛,陆文龙,等.降水条件下土柱中除草剂硝磺草酮的迁移与淋溶特性[J].江苏农业科学,2015,43(06):321-324.
 Chen Tianming,et al.Migration and leaching characteristics of herbicide mesotrione in soil columns under rainfall conditions[J].Jiangsu Agricultural Sciences,2015,43(06):321-324.
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降水条件下土柱中除草剂硝磺草酮的迁移与淋溶特性(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第43卷
期数:
2015年06期
页码:
321-324
栏目:
资源与环境
出版日期:
2015-06-25

文章信息/Info

Title:
Migration and leaching characteristics of herbicide mesotrione in soil columns under rainfall conditions
作者:
陈天明12殷春涛2陆文龙2严金龙2张雁秋1
1.中国矿业大学环境与测绘学院,江苏徐州 221116; 2.盐城工学院环境科学与工程学院,江苏盐城 224051
Author(s):
Chen Tianminget al
关键词:
淋溶 土柱 硝磺草酮 水稻土 盐碱土淋溶吸附
Keywords:
-
分类号:
X592
DOI:
-
文献标志码:
A
摘要:
以水稻土和盐碱土为对象,采用物理模拟人工降雨的方法对比分析了淹水条件下土柱中 (高 25 cm、内径10 cm) 新型除草剂硝磺草酮的迁移和淋溶规律。结果表明,在硝磺草酮添加量为7.5 mg/kg、10 h持续降雨(降雨量为60 mL/h)条件下,土柱中硝磺草酮的驻留量随着深度的增加而增加,水稻土土柱层15~21 cm中硝磺草酮的含量达到27.35 mg/kg,低于盐碱土的39.07 mg/kg,4 %的农药穿过了淋溶柱,显示出较强的淋溶特性。土壤和淋溶液pH值的大小对弱酸性结构的硝磺草酮的迁移和淋溶影响较大。随着pH值的升高,硝磺草酮离解为阴离子,其水溶性增大、土壤吸附性能力减弱,更容易进入深层土壤(尤其是pH值较高的盐碱土),进而对地下水产生威胁。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期:2014-06-30
基金项目:国家自然科学基金(编号:21277115);江苏省产学研联合创新资金(编号:BY2014108-15)。
作者简介:陈天明(1982—),男,江苏盐城人,博士研究生,讲师,从事污染物监测与控制方面的研究。E-mail:ycchentm@163.com。
通信作者:张雁秋,博士,教授,主要从事环境污染与控制方面的研究。E-mail:zhangyq@163.com。
更新日期/Last Update: 2015-06-25