一、发病规律: 草毒疫病是由苹果疫霉(Phytophthera cactorum)草霉疫霉(P·fragariae)等多种真菌引起的果实病害。在河北省草莓产区发生严重,尤其在草莓果实采摘季节雨水较多的年份,对草莓产量影响极大。轻者减产10%,重者可减产50 First, the incidence of law: grass virus disease is Phytophthora (Phytophthera cactorum) Phosphorus fungus (P fragariae) and other fungal diseases caused by fruit. Strawberry production in Hebei Province, serious, especially in the season of strawberry picking more rain, strawberry production has a great impact. Light output reduction of 10%, weight reduction of 50