蔬菜的覆盖栽培是人为地创造蔬菜生长发育的气候环境而发展起来的,它对蔬菜生产起重要作用。但病害的发生受环境的制约,在覆盖栽培的蔬菜上发生的病害,常和露地蔬菜的情况不同。据日本报导,近年随蔬菜保护地栽培的增加,塑料大棚内各种病害大量发生,已成为蔬菜产区的主要问题。我国蔬菜保护地栽培面积也日益增加,因此对 Vegetable cultivation is artificially created vegetable growth and development of the climatic environment and developed, it plays an important role in vegetable production. However, the occurrence of diseases is controlled by the environment. The diseases that occur on covered vegetables are often different from those in open-field vegetables. According to reports from Japan, with the increase of cultivation of vegetables in recent years, a great deal of diseases have occurred in plastic greenhouses and have become the major problems in the vegetable producing areas. China’s vegetable cultivation area is also growing, so right