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1无公害蔬菜生产对农药的要求:结合蔬菜种植和蔬菜病虫发生的特点,在无公害蔬菜生产中对农药的使用具有以下要求:(1)具有高效、速效性,否则在蔬菜地不具有实用性。(2)具有安全性,包括低毒、低残留,药剂成分(含各种剂型之助剂)可在自然界迅速分解(如光解、水解或微生物分解),不污染环境,对天敌昆虫、授粉昆虫杀伤力低,对蔬菜不产生药害。(3)具有广谱性,不仅对多类别害虫有效,而且对同虫各虫态有效。(4)对某种(类)蔬菜害虫具有高选择性。(5)不易产生抗药性或交互抗性的药剂。(6)结构式新颖,作用机理独特的新型高效杀虫剂。
1 pollution-free vegetable production requirements of pesticides: combined with the characteristics of vegetable cultivation and pest occurrence of vegetables in the production of pollution-free vegetables on the use of pesticides has the following requirements: (1) has high efficiency, quick-acting, otherwise not in vegetable land Practicality. (2) Safety, including low toxicity, low residue, pharmaceutical ingredients (including various types of additives) can be rapidly decomposed in nature (such as photolysis, hydrolysis or microbial decomposition), do not pollute the environment, natural enemies of insects, pollination Insect low lethality, does not produce phytotoxicity on vegetables. (3) has a broad spectrum, not only effective against many types of pests, but also effective against the same insect states. (4) High selectivity to certain kinds of vegetable pests. (5) is not easy to produce drug resistance or cross-resistance of the agent. (6) a new structure and unique mechanism of action of a new type of highly efficient pesticides.