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葡萄白腐病是严重影响葡萄产量和质量的一种顽疾。在多年的生产和教学实践中,我校对该病病因的认识和无公害防治取得如下经验,供各地同行及果农参考。(一)病因:(1)与温湿度有关白腐病菌发育的最适温度为28-30℃,最适相对湿度在95％以上。因而葡萄临近着色期以后的降雨早晚、雨量大小及雨日多少,与发病早晚及程度有密切关系。降雨早而多病重,雨后接着阴天或阴雨连绵,病害会严重发
Grape white rot is a serious problem affecting the yield and quality of grapes. In many years of production and teaching practice, our school made the following understanding of the etiology of the disease and pollution-free prevention and control for the reference of peers and fruit farmers. (A) causes: (1) temperature and humidity related to the development of white rot bacteria optimum temperature of 28-30 ° C, the optimum relative humidity of 95% or more. So the grapes near the coloring period sooner or later, the amount of rainfall and the number of rainy days, and the incidence of sooner or later, and have a close relationship. Rain early and sick, heavy rain followed by cloudy or rainy days, the disease will be fatal