由于塑料大棚,温室等保护地设施栽培的特殊生态环境,为蔬菜病虫害的发生提供了有利条件,致使蔬菜病虫害发生的种类、数量及为害程度明显增加,成为保护地蔬菜增产增收的重要障碍,严重影响了蔬菜的产量和品质,也给菜农造成了很大的经济损失。1.保护地蔬菜病虫害发生特点塑料棚室保护地蔬菜病虫害发生种类繁多,常病害多于虫害。 Due to the special ecological environment such as plastic greenhouses and greenhouses, it provided favorable conditions for the occurrence of pests and diseases of vegetables, resulting in the obvious increase in the types and quantities of pests and diseases and the degree of harmfulness, which became an important obstacle to the increase of vegetables in protected areas. Affecting the yield and quality of vegetables, but also causing great economic losses to vegetable farmers. 1. Protected vegetable pests and diseases Occurrence characteristics Plastic greenhouse vegetable pests and diseases occur a wide range of diseases often more than pests.