摘要
为了制定砜嘧磺隆在玉米上的安全使用标准,采用田间实验的方法,研究了砜嘧磺隆在玉米及土壤中的残留动态,应用GLC法测定了砜嘧磺隆在玉米及土壤中的残留量。两年的试验结果表明,砜嘧磺隆在玉米及土壤中消解较快,其半衰期分别为7—8d和10—11d,施药为33.8g(ai)·hm-2,使用1次,末次施药距收获时间隔55d,砜嘧磺隆在玉米及土壤中的残留量均低于0.002mg·kg-1,该药属易分解农药(T1/2<30d)。
In order to make up a standard proced ure for safe use of rimsalfuron on soil and corn,a field supervised experiment was conducted to reveal dynamics of rims alfuron in soil and corn,respectively.The residues of rimsalfuron in so il and corn were deter-mined by GLCprocedure.The results o f two year' s study showed that rimsulfuron(OPX -E9636)disappeared rapidly fromboth soil and corn.Its half -lives in soil and c orn were 10-11and 7-8days,respectively.The corn was sprayed one time wi th Titus 25DF at dilution of 1.8:1000(33.8g a.i ·hm -2 ).At the 55th day after last application,the final residues of the rinsulf uron in corn seed and soil were <0.002mg ·kg -1 .Therefore,it maybe conduced that r imsulfuron is a non -persistent pesticide.
出处
《农业环境保护》
CSCD
北大核心
2002年第4期343-345,共3页
Agro-Environmental Protection
