不同农药在花椰菜中的安全间隔期研究

Study on the Safety Interval of Different Pesticides in Cauliflower

采用大田试验和农药残留定量检测方法,研究了5种农药在花椰菜中的安全间隔期。结果表明,不同农药按照推荐剂量施用的条件下,在花椰菜中的降解速率不同,其中,三唑酮在花椰菜上的安全间隔期高达14~21d,辛硫磷为7~14d,敌敌畏为5~7d,氯氟氰菊酯为3~5d,高效氯氰菊酯为1~3d;施用2倍推荐剂量农药的条件下,不同农药的安全间隔期提高1~7倍。

In this paper, the safety interval of five pesticides in broccoli were studied by field experiment and quantitative detection of pesticide residues.The results showed that the degradation rates of different pesticides in cauliflower were different under the conditions of recommended pesticide dosage.Among them, the safe interval of triadimefon on cauliflower was as high as 14~21 d, phoxim was 7~14 d, dichlorvos was 5~7 days, cyhalothrin was 3~5 days, and beta-cypermethrin is 1~3 days.Under the condition of applying twice the recommended dose of pesticide, the safety interval of different pesticides will increase by 1~7 times.