近年来许多菜区大部分用土温室和塑料大棚进行反季节栽培，有效地改善了蔬菜生长环境，明显提高了蔬菜产量和经济效益。但是，棚室蔬菜明显的缺点是容易发病。长期以来菜农在防治病虫危害方面积累了不少经验，却忽视了某些生理性障碍，常常误诊为菌类病害或虫害，结果用错了药? In recent years, most of the vegetable areas are cultivated in different season with greenhouses and plastic greenhouses, effectively improving the environment for growing vegetables and obviously increasing the yield and economic benefits of vegetables. However, the obvious disadvantage of vegetable greenhouses is their susceptibility to disease. For a long time, farmers have accumulated a lot of experience in the prevention and control of pests and diseases, but ignored some physiological disorders, often misdiagnosed as fungal diseases or pests, the result of the wrong drug?