蔬菜有害生物的防治到目前为止,虽然还是一个簿弱环节,但由于长期使用化学农药,包括杀虫剂、杀菌剂、除草剂等造成了生态系统的内外副作用,最引人注目的是“三R”问题。所谓“三R”即由于大量使用化学农药特别是高残留、广谱性农药和农药滥用造成的病虫再猖獗(Resurgence)、抗性(Resis-tanee)和残留(Residue),从而使防治更加困难,公害严重,威协着人们的身体健康和后代成长。因此蔬菜因化学农药的应用应科学化。一、蔬菜上严禁使用高毒、高残留农药 Prevention and control of pests of vegetables So far, although it is still a weak link in the book, the long-term use of chemical pesticides, including insecticides, bactericides and herbicides has caused the internal and external side effects of the ecosystem. The most notable one is “ Three R ”problem. The so-called “three R ” is caused by extensive use of chemical pesticides, especially high residues, broad-spectrum pesticide and pesticide abuse, Resurgence, Resis-tanee and Residue, Prevention and control more difficult, serious public nuisance, Wei Association of people’s health and future generations growth. Therefore, due to the application of chemical pesticides should be scientific. First, vegetables are strictly prohibited use of highly toxic, high residual pesticides