首页 | 官方网站   微博 | 高级检索  
     

除草剂草甘膦在几种土壤和矿物上的吸附研究
引用本文:王玉军,周东美,孙瑞娟,陈怀满,郝秀珍,仓龙.除草剂草甘膦在几种土壤和矿物上的吸附研究[J].土壤学报,2006,43(5):780-785.
作者姓名:王玉军  周东美  孙瑞娟  陈怀满  郝秀珍  仓龙
作者单位:1. 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008;中国科学院研究生院,北京,100039
2. 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008
基金项目:国家重点基础研究发展计划(973计划)
摘    要:通过批平衡实验考察了草甘膦在几种性质不同土壤和矿物上的吸附行为。研究发现土壤对草甘膦有较强的吸附能力,草甘膦在土壤上吸附量的大小与土壤理化性质密切相关。草甘膦在土壤和矿物上的吸附符合Freundlich吸附方程,其在土壤上的吸附常数K与土壤粘粒含量呈正相关,并随土壤氧化铁和氧化铝含量增加而增加,而与土壤的pH呈显著负相关。草甘膦在高岭石上的吸附量要比在蒙脱石上大,而草甘膦在金属离子饱和的蒙脱石和高岭石上的吸附研究结果表明,草甘膦在钠、钙、铁离子饱和的矿物上的吸附能力依次为Fe-蒙脱石〉Ca-蒙脱石〉Na-蒙脱石和Fe-高岭石〉Ca-高岭石〉Na-高岭石。

关 键 词:草甘膦  吸附  土壤  蒙脱石  高岭石
收稿时间:06 9 2005 12:00AM
修稿时间:2005-06-092005-11-15

ADSORPTION OF GLYPHOSATE ON SOILS AND MINERALS
Wang Yujun,Zhou Dongmei,Sun Ruijuan,Chen Huaiman,Hao Xiuzhen and Cang Long.ADSORPTION OF GLYPHOSATE ON SOILS AND MINERALS[J].Acta Pedologica Sinica,2006,43(5):780-785.
Authors:Wang Yujun  Zhou Dongmei  Sun Ruijuan  Chen Huaiman  Hao Xiuzhen and Cang Long
Affiliation:1 State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China ; 2 Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
Abstract:Behavior of pesticide adsorbed on soil and mineral surface is important for determining its environmental fate and risk.The adsorption of glyphosate N-(phosphonomethyl)-glycine](GPS;GLY) on six types of soils different in physico-chemical characteristics,and on minerals saturated with metal ions was investigated.The results indicate that the adsorption isotherms were well fitted with the Freundlich equation.Quantity of glyphosate adsorbed on the soils was related to soil characteristics.It increased with the contents of soil clay and Fe_(2)O_(3),but decreased with the increasing soil pH.More glyphosate was adsorbed by kaolinite than by montmorillonite.When the minerals were modified with different metal ions,quantity of adsorbed glyphosate decreased on the minerals,which were in a decreasing order of Fe~(2 )-montmorillonite>Ca~(2 )-montmorillonite>Na~( )-montmorillonite and Fe~(2 )-kaolinite>Ca~(2 )-kaolinite>Na~( )kaolinite.
Keywords:Glyphosate  Adsorption  Soil  Montmorillonite  Kaolinite
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《土壤学报》浏览原始摘要信息
点击此处可从《土壤学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号