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大棚因有塑料薄膜覆盖,形成了一个相对封闭的与露地不同的特殊小气候。蔬菜等作物生长在大棚内,其环境与露地有很大差别,导致了蔬菜病虫害的发生规律与露地相比也有较大的差异。这就要求我们根据大棚蔬菜病虫害的发生特点,提出一套有大棚特色的病虫害防治方法。1病虫害发生特点
Greenhouses due to a plastic film covered, forming a relatively closed and exposed a different special microclimate. Vegetables and other crops grow in the greenhouse, the environment and the open have a great difference, resulting in the occurrence of vegetable pests and diseases compared with the open field there is a big difference. This requires that we put forward a greenhouse pest control methods based on the characteristics of greenhouse pests and diseases. 1 pest occurrence characteristics