自 8 0年代以来 ,伴随棚室蔬菜生产的发展 ,灰霉病等次要病害上升为主要病害 ,对茄果类、瓜类蔬菜的前期产量造成很大的损失。据在宁波蔬菜基地调查 ,仅灰霉病为害茄子 ,苗发病率平均为 1 5.4 % ,高的达71 .9% ,果发病率平均为 1 7.7% ,高的达 4 7% ;番茄、甜椒、黄瓜、瓠瓜等 Since the 1980s, with the development of greenhouse vegetable production, secondary diseases such as gray mold disease have risen as the major diseases, causing great losses to the early production of solanaceous fruits and melons and vegetables. According to the survey of Ningbo vegetable base, only gray mold disease eggplant damage, the average incidence of 11 5.4%, high of 71.9%, the average incidence of fruit 1 7.7%, up to 47% high; tomato, sweet Pepper, cucumber, cucumber and so on