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近几年来,随着温室大棚蔬菜的不断发展,蔬菜上的一些病虫害的发生有了较大的变化,如西葫芦灰霉病已经成为西葫芦上的一种非常重要的病害,每年都有不同程度的发生,给西葫芦生产带来比较严重的损失,据调查,一般年份可造成减产20％左右,严重的可达80％以上,甚至造成毁棚。
In recent years, with the continuous development of vegetables in greenhouse, the occurrence of some pests and diseases on vegetables has been greatly changed. For example, gray mold disease of zucchini has become a very important disease on zucchini, with varying degrees each year Occurred, to the production of zucchini more serious losses, according to the survey, the general year can cause about 20% cut, a serious up to 80% or more, and even destroyed.