论文部分内容阅读
无公害生产蔬菜,是指在蔬菜种植过程中不被化肥、农药及工业废水、废渣、废气所污染。目前,生产无公害蔬菜主要依靠农业技术措施来抑制和消灭病虫害,为人们提供安全优质菜,确保人们的身体健康。 土壤深耕。土壤既是蔬菜生长的基地,同时又是病虫害潜伏场所。深耕能将地表层卵、蛹及幼虫深埋,同时又可将地下害虫翻上来,使好气病虫害和喜温病虫害同时被消灭。 轮作倒茬。病菌和害虫都有一定的寄生性。连年种植同一种菜便会导致某种病虫害大发生。实行轮作倒茬,既可充分利用光能和地力,又可
Pollution-free production of vegetables, is not in the process of vegetable cultivation by chemical fertilizers, pesticides and industrial waste water, waste residue, waste gas pollution. At present, the production of pollution-free vegetables relies mainly on agricultural technological measures to suppress and eradicate pests and diseases, providing people with safe and quality food and ensuring people’s health. Soil deep plowing. Soil is not only a base for the growth of vegetables, but also a potential place for pests and diseases. Deep plowing can surface eggs, pupae and larvae buried at the same time underground pests can be turned up, so that aerobic pests and hi temperature pests and diseases are eliminated. Crop rotation. Viruses and pests have some parasitism. Growing the same kind of food in successive years will cause some pests and diseases to happen. The implementation of crop rotation, can make full use of light and ground force, but also