春季是一串红、四季海棠、锦葵等多种花卉育苗的有利时机。但是,由于春季气候多变,寒流经常出现,常给花卉苗期多种病害的发生带来有利的条件,现将春季花卉苗期主要病害的发生情况及防治方法介绍如下。猝倒病未出土或刚出土的幼苗均可发病幼苗未出土时发病,胚芽和子叶腐烂。出土的幼苗 Spring is a string of red, four seasons Begonia, mallow and other flowers seedling favorable opportunity. However, due to the changing climate in spring, cold flow often occurs, which often brings favorable conditions for the occurrence of various diseases at flower seedling stage. Now the occurrence and control of major diseases in spring flower seedling stage are introduced as follows. Damping disease is not unearthed or newly excavated seedlings can be disease when the seedlings are not unearthed disease, germ and cotyledons decay. Unearthed seedlings