近年来 ,葡萄白腐病的发生逐年加重 ,目前已成为我市葡萄生产的主要病害。１９９９年发生面积近０ ５万ｈｍ２,占全市葡萄面积的６０ % ,发病地块减产３０ %～５０ % ,损失严重。现将该病的发生规律及防治技术作如下探讨。一、发生症状主要为害叶片、新梢、穗轴和果实。发病初 In recent years, the occurrence of grape white rot has increased year by year, and now it has become the main disease of grape production in our city. In 1999, an area of ​​nearly 50,000 hm2 occurred, accounting for 60% of the grape area in the whole city. The land mass loss reduced by 30% -50% and the loss was serious. Now the incidence of the disease and prevention and treatment techniques as follows. First, the main symptoms of damage leaves, shoots, cob and fruit. Early onset