摘要
应用土壤薄层层析（ＴＬＣ）法测定了１４Ｃ－绿黄隆在１０种土壤中的移动率，其Ｒｆ值为０．６５～１．０，表明绿黄隆在供试土壤中分别属可移动性和极易移动性。用大面积土柱淋溶法测得３种土壤柱在模拟降雨下的淋溶动态及其参数，经计算，在黄潮土、黄棕壤和红壤中，使１４Ｃ－绿黄隆垂直移动透过１０ｃｍ土层所需连续降水量分别为７５，８０和９４ｍｍ。绿黄隆在土壤中的迁移性与土壤ＰＨ值密切相关，随ｐＨ值增高其移动性和淋溶性增大。绿黄隆随水迁移性较强，它有可能对农业生态环境产生不良影响。
The migration of 14C-chlorsulfuron in 10 kinds of soil was tested by means of soil TLC.14C-chlorsulfuron with Rf values between 0.65 and 1.0 belongs to mobile and easily mobile herbicide.Through leaching with large area of soil column, the experiment also determines dynamics of leaching of 3 kinds of soil column under the simulated rain,and makes it clear that the rainfalls needed by a vertical 10 cm fall of chlorsulfuron in the fluvo-aguic soil,yellow-brown earth and red earth were separately 75,80 and 94 mm.The migration of chlorsulfuron has close relation with soil pH.The Rf value and leaching ratio increase with the increase of soil pH.Because of its later migration with water,chlorsulfuron may move up with capillary water,move down with leaching water and also spread crosswise.Thus,it may imPOse harmful effects on ecosystem of agriculture.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1994年第3期121-127,共7页
Journal of Nanjing Agricultural University
基金
农业部"八五"重点课题
关键词
绿黄隆
土壤
移动率
淋溶
chlorsulfuron
soil thin-layer chromatography
rate of flow
leaching
