摘要
采用振荡平衡法研究了新农药呋喃虫酰肼(JS118)在4种中国典型土壤中的吸附特性及其吸附影响因素。结果表明,JS118在江西红土、山东黄土、北京褐土及吉林黑土中的吸附基本符合Freundlich方程,其吸附常数Kf分别为2.2619、2.5734、2.3811和2.9279。JS118在4种供试土壤中的吸附能力均较弱(Kf<5),且以物理吸附为主(△G<40kJ·mol-1)。另外,其吸附系数与土壤有机质含量及土壤pH值呈良好的相关性,而与阳离子交换量及粘粒含量相关性较差。
The adsorption behavior of JS 118 ranged at five doses from 5 to 25 μg/g·soil into four Chinese soils with batch equilibrium method has been evaluated. The results showed that the adsorption isotherm data of JS 118 in Jiangxi red soil, Shandong yellow soil, Beijing yawn soil and Jilin black soil were well described by the Freundlich equation with the adsorption coefficient （Kf） ranged from 2.261 9 to 2.927 9. The presence of organic compounds in soils and the pH played important role. There was a poor correlation between Kf with cation exchange content and clay content of soils.
出处
《现代农药》
CAS
2009年第3期11-14,共4页
MODERN AGROCHEMICALS
基金
国家自然科学基金项目(20777078)
