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研究36%苄·二氯可湿性粉剂在水稻苗床土壤中的残留动态,建立了样品前处理方法和分析方法。36%苄.二氯WP在稻田土壤样品的添加回收率均大于80%,在吉林省和湖南省土壤中,苄嘧磺隆的半衰期分别为2.59～2.97、1.52～1.59d,二氯喹啉酸的半衰期分别为10.00～12.49、3.65～4.19d,降解较快。苄嘧磺隆、二氯喹啉酸在水稻移栽前苗床土壤中均未检出。
The residual dynamics of 36% benzyl dichloride wettable powder in paddy soil was studied, and the sample pretreatment methods and analytical methods were established. The recovery rates of 36% benzyl dichloride WP in paddy soils were all more than 80%. The half-lives of bensulfuron-methyl in soil of Jilin Province and Hunan Province were 2.59-2.97 and 1.52-1.59d, respectively. The quinclorac Half-lives were 10.00 ~ 12.49,3.65 ~ 4.19d, degradation faster. Bensulfuron-methyl and quinclorac were not detected in the seedbed soil before rice transplanting.