1．把好农药品种关蔬菜发生病虫害，不可随便施用农药，必须严格选用合适品种。国家规定：剧毒农药和残效期长的农药一律不准在蔬菜上施用，如3911、16OS、1059、吹哺丹等。可以使用高效低毒，容易分解，残效期短的农药，如敌百虫、乐果、马拉硫磷、辛硫磷、杀螟松、石硫合剂、 1. The good varieties of vegetables off pests and diseases, can not be applied pesticides, we must strictly select the appropriate varieties. National regulations: highly toxic pesticides and pesticides are not allowed to be on the long-term use of vegetables, such as 3911,16 OS, 1059, blowing Dan and so on. You can use highly efficient and low toxicity, easy to decompose, short residual effect of pesticides, such as trichlorfon, dimethoate, malathion, phoxim, fenitrothion, lime sulfur mixture,