番茄棚栽之后,对增加番茄产量、提高番茄质量都起到了重要的作用。但棚栽改变了番茄作物所处的生态条件,引起番茄病害菌原类群的变化,一些病害日趋严重,尤其是番茄早疫病。兰州市1983年因棚栽番茄早疫病的流行危害,使全市3400余亩番茄减产15％,损失达62.5万元。为此,我们从1983年到1987年对塑料薄膜大棚番茄早疫病的流行规律、生态防治 After tomato shedding, it has played an important role in increasing the yield of tomato and improving the quality of tomato. However, planting has changed the ecological conditions in tomato plants, causing changes in the protozoa of tomato disease pathogens, some diseases are becoming more serious, especially tomato early blight. Lanzhou City in 1983 due to the shedding tomato early blight epidemic hazards, so that the city more than 3,400 acres of tomatoes cut 15% loss of 625,000 yuan. To this end, we from 1983 to 1987 on plastic film greenhouse tomato early blight epidemic, ecological control