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采用气相色谱—氮磷检测器(GC-FTD),对5%丁硫克百威颗粒剂在花生植株及土壤样品中的消解动态和最终残留进行了研究。两年三地试验结果表明,丁硫克百威在花生植株及土壤中的残留消解动态符合一级动力学反应模式,在植株和土壤中的消解半衰期分别为9.5~12.1d和9.8~13.3d。5%丁硫克百威颗粒剂按照推荐使用上限量3750g a.i./hm~2和推荐上限量的1.5倍5625g a.i./hm~2,于花生播种时一次性使用,收获时在花生植株、果壳、籽仁以及0~15cm耕层中的最终残留量<0.01mg/kg,低于国标0.2mg/kg的限量。表明,当花生播种时一次性使用剂量为3750~5625g a.i./hm~2的5%丁硫克百威颗粒剂,收获时产品是安全的,也不会造成土壤污染。
The digestion kinetics and final residues of 5% D-thiacrostone in peanut plants and soil samples were studied by gas chromatography-nitrogen-phosphorus detector (GC-FTD). The test results of two years and three trials showed that the residual digestion dynamics of carbofuran in peanut plants and soil conformed to the first-order kinetic reaction model, and the half-lives of digestion in plants and soil were 9.5-12.1d and 9.8-13.3d, respectively . 5% Butylatedithiobarb Granules In accordance with the recommended use of the upper limit of 3750g ai / hm ~ 2 and the recommended upper limit of 1.5 times 5625g ai / hm ~ 2, when the peanut sowing one-time use, harvesting in the peanut plant, , Seed kernels and the final residues in 0-15cm layer <0.01mg / kg, lower than the national standard 0.2mg / kg limits. Showed that when the peanut sowing time when the single-use dosage of 3750 ~ 5625g a.i./hm ~ 2 5% carbosulfan granules, the product is safe to harvest, it will not cause soil pollution.