蕃茄灰霉病是保护地蕃茄种植的重要病害。据京郊调查,一般地块病果率20%左右;重病田则病果率高达80%。严重影响早春产量、产值及市场供应。为此在1985～1989年,开展了蕃茄灰霉病发生规律和防治技术研究。一、发生规律1.发病时期:因春保护地的种植棚式不一,而发病时期有别。冬季加温温室发病期在11～2月份;春季半加温中棚发病多在4月中、下旬时的停火期后;春大棚和中棚发病盛期基本 Botrytis cinerea is an important disease of tomato planting in protected areas. According to the survey in Beijing suburbs, the general mass disease rate of about 20%; severe disease rate of disease is as high as 80%. Seriously affect the early spring output, output value and market supply. To this end in 1985 ~ 1989, launched a tomato gray mold disease prevention and control technology and research. First, the occurrence of the law 1. The onset period: due to the protection of spring planting shed different, and the onset period are different. The warming period in winter was from February to February. In spring, the incidence of greenhouse warming was mostly in mid-April and late-afternoon after the cease-fire period. In the peak period of spring shed and middle shed,