摘要
分别利用振荡平衡法和土柱淋溶法研究了丁噻隆在不同土壤中的吸附和淋溶特性及其影响因素。结果表明，丁噻隆在5种供试土壤中的吸附特性能较好地用线性模型拟合，吸附能力顺序为：东北黑土〉太湖水稻土〉江西红壤〉南京黄棕壤〉陕西潮土，吸附常数K为0．19～2．87mL·g^-1，吸附性能较差。丁噻隆在3种典型土壤中的淋溶试验表明其具有较强的淋溶性，淋溶速率为：江西红壤〉太湖水稻土〉东北黑土。影响丁噻隆吸附和淋溶的主要因素是土壤有机质含量。
Adsorption and leaching of tebuthiuron in soil and their affecting factors were studied with vibrating equilibrium method and column leaching method. Results show that adsorption of the substance in 5 soil samples tested was well fitted with a linear model. The soils followed an order of Northeast China black soil 〉 Taihu region paddy soil 〉 Jiangxi red soil 〉 Nanjing yellow brown soil 〉 Shaanxi fluvo-aquie soil in terms of tebuthiuron adsorption capacity. Their adsorption constant ranged between 0. 19 and 2. 87 mL · g ^-1 , indicating that their adsorption capability was rather low. The leaching experiments of tebuthiuron in the three typical soils show that tebuthiuron was quite leachable, and the soils followed an order of Jiangxi red soil 〉 Taihu region paddy soil 〉 Northeast China black soil. The main factor affecting the adsorption and leaching of tebuthiuron was organic matter content in the soil.
出处
《生态与农村环境学报》
CAS
CSSCI
CSCD
北大核心
2010年第1期78-81,共4页
Journal of Ecology and Rural Environment
基金
国家水体污染控制与治理科技重大专项(2008ZX07101-006-05)
关键词
丁噻隆
吸附
淋溶
土壤
有机质
tebuthiuron
adsorption
leaching
soil
organic matter
