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桃树缩叶病菌以子囊孢子或芽孢子在桃芽鳞片外表或芽鳞间隙中越冬度寒。来年春始,当气温渐升,天气日暖,桃树芽展开时,病菌孢子萌发侵害嫩叶、新梢,继而侵害花、幼果。 桃树缩叶病的发生,与气温、湿度、地下水位高低等关系非常密切。3—5月间若出现低温多雨天气,最有利于此病的发生、蔓延。山区、半山区,以及湖泊岸边、江河边缘,由于春雨多,空气湿度大,缩叶病发生严重,损失大。
Peach tree leaf asymptomatic spores or spores in the peach bud scales or bud scales gap in the winter cold. The spring of next year, when the temperature is getting warmer and the weather is getting warmer, when peach buds unfold, the spore germs of the germs invade young leaves and shoots, and then violate flowers and young fruits. The occurrence of peach tree leaf disease, and the temperature, humidity, groundwater level is very close relationship. 3-5 months if there is cold and rainy weather, the most conducive to the occurrence of the disease, spread. Mountain, Mid-Levels, and the shore of the lake, the edge of the river, due to the spring rain and more air humidity, serious rolley disease, loss.