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通过光解动态研究、土壤消解试验和小麦种皮消解试验,研究了1.8%阿维菌素乳油和2%阿维菌素微囊悬浮剂在3种不同环境下的光解及消解动力学。结果表明:阿维菌素乳油与微囊悬浮剂在3种环境中的消解均符合一级反应动力学规律;微囊悬浮剂抗光解能力强,光化学分解缓慢,而乳油则在紫外光下分解较快;5、20 mg/kg的阿维菌素微囊悬浮剂和乳油在土壤中的消解半衰期分别为88.86、157.52 d和22.14、82.51 d。阿维菌素微囊悬浮剂在小麦种皮上的残留量明显高于乳油,有较长的持效期。
The photolysis and digestion kinetics of 1.8% abamectin EC and 2% abamectin microcapsule SC in three different environments were studied by kinetics of photolysis, soil digestion and wheat seed coat digestion. The results showed that the digestion of abamectin EC and microcapsule suspending agent in three kinds of environments all conformed to the first-order reaction kinetics. The microcapsule suspending agent had strong photolytic ability and slow photochemical degradation, while the emulsifiable concentrate was under UV light The decomposition half time of 5, 20 mg / kg abamectin microcapsule suspension and EC in soil were 88.86, 157.52 d and 22.14, 82.51 d, respectively. The residues of abamectin microcapsule suspending agent in wheat seed coat were obviously higher than that of emulsifiable concentrate, and had a longer persistence period.