生产无公害蔬菜,要以农业措施防治病、虫、草害为主,优先选用生物防治与物理防治手段。大力推广使用植物农药和开发使用“土农药”尽可能少用或不用化学农药。生产无公害蔬菜外用农药时,也应选用高效、低毒、残效期短的农药品种。 1.安全间隔期2天的农药,如二氧苯醚菊酯(除虫精)、氯氰菊酯(兴棉宝)。 2.安全间隔期3天的农 Production of pollution-free vegetables, agricultural measures should be used to prevent disease, insects, grass-based disease, giving priority to the use of biological control and physical control measures. Promote the use of plant pesticides and develop the use of “soil pesticides” as little or no chemical pesticides. Production of pollution-free vegetables topical pesticides, should also use efficient, low toxicity, short duration of pesticide varieties. 1. Safety interval of 2 days of pesticides, such as 2-pyrethroid (pest control), cypermethrin (Hing Cotton). 2. Safety interval of 3 days of agriculture