摘要
用气相色谱法测定了异丙甲草胺在大豆田土壤中的残留动态及残留量，建立了该药剂在土壤中的残留分析方法。研究结果表明，异丙甲草胺在土壤中的消解速度因气候及土壤而异。山东试验点降解较快，半衰期为１０～１２ｄ，吉林试验点降解较慢，半衰期为１６～１７ｄ。在施用７２％异丙甲草胺乳油２５０５ｍＬ／ｈｍ２和４９９５ｍＬ／ｈｍ２的条件下，收获时土壤中均未检出异丙甲草胺。
Residue and degration of metolachlor in soybean field soil were studied The results showed that the degration of metolachlor in Shandong was faster than in Jilin The half life was 10～12 days in Shandong, and that 16～17 days in Jilin, with the recommended dosage and timing of application The terminal residues in soil were less than the detectable limits (0005 mg/kg)
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
1997年第3期68-71,共4页
Journal of Jilin Agricultural University
关键词
异丙甲草胺
半衰期
土壤
残留量
大豆田
soybean field
matolachlor
halflife
soil
residual dosage
