除草剂苄嘧黄隆在土壤和水稻中的残留

Residue of ¹⁴C－bensulfuron in rice

摘要: 应用核素示踪技术，以¹⁴C－苄嘧黄隆研究其土壤和作物残留性，结果表明，在常用量条件下施于水稻土壤的苄嘧黄隆，经过稻季（98ｄ）后，土壤残留量为1.5μｇ／ｋｇ，消解半衰期为28ｄ．稻谷残留量为11.63μｇ／ｋｇ，低于苄嘧黄隆允许残留量（20μｇ／ｋｇ）。苄嘧黄隆属于易降解除草剂，按常规使用对环境是安全的。

Abstract: The ¹⁴C－bensulfuron residues in soil and plant were studied by using nuclear trace method.The results show that the half life of bensulfuron is 28 days,and one rice season(98 days)after normal application of bensulfuron,its residue in soil and rice were 1.5μg/kg and 11.63 μg/kg respectively,that are much lower than the allowable value,It is concluded that the normal application of bensulfuron is environmentallv safe.