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早春,大多数病菌正处于休眠的末期,这时病菌多集中在病株、病叶和枯枝落叶上,要及早清除这些病株、病叶,进行集中烧毁和深埋,这样就可大量地消灭病菌和病源。玫瑰锈病、月季黑斑病和白粉病等病菌都集中在花木的枝、叶和嫩芽内过冬。剪除这些花木有病的部位,并在萌芽前喷2～4度的石硫合剂,可有效地减轻花木春季发病时为害花木的程度。在早春花芽萌动期,要经常仔细检查月季、玫瑰等花木叶芽是否有肿大畸
Early spring, most of the bacteria are in the end of dormancy, when the bacteria are concentrated in diseased plants, diseased leaves and litter on the early removal of these diseased plants, diseased leaves, concentrated burned and buried, so that a large number of Eliminate germs and pathogens. Rose rust, rose black spot disease and powdery mildew and other pathogens are concentrated in the branches, leaves and buds winter. Cut off the diseased parts of these flowers and trees, and sprouting 2 ~ 4 degrees before the stone sulfur mixture, which can effectively reduce the incidence of flowers and trees in the spring when the degree of damage to flowers. In early spring flower bud germination period, often carefully check rose, rose and other flowers and leaves buds have swollen