除草剂灭草烟在土壤中的吸附、脱附

Adsorption and desorption of herbicide imazapyr by soil.

对咪唑啉酮类除草剂灭草烟在８种土壤的吸附、脱附进行了研究，对振摇时间、温度、土壤ｐＨ值的影响作了探讨，并对吸附、脱附常数与土壤的理化性质的相关性进行了分析。结果表明，灭草烟在土壤中吸附常数和土壤〔Ｈ＋〕（ＯＭ％）呈正相关。

The adsorption and desorption of imazapyr on eight soils of various physical and chemical properties were studied. The correlation of Freundlich adsorption and desorption constant, Kaf and Kdf, with physical and chemical properties of soils were also studied. The results show that Kaf increases with the increase of 〔H+〕O.M.% of soils;and the desorption rate increases with the decrease of O.M.% of soils.