韭菜灰霉病 ,俗称白点病或腐烂病 ,是近年保护地韭菜的常发病和主要病害 ,常导致叶片大量腐烂 ,降低品质 ,减产 2 0 %～ 30 %。1　症状灰霉病病原属于半知菌亚门、葡萄孢属葱鳞葡萄孢菌ＢｏｔｒｙｔｉｓｓｑｕａｍｏｓａＷａｌｋｅｒ。发病后在叶片上的症状表现可分为白点、干 Leek gray mold disease, commonly known as white spot disease or rot disease, is a common disease and major disease in recent years to protect leeks, often lead to a large number of decay leaves, reduce quality, cut 20% to 30%. 1 Symptoms of gray mold disease belongs to the penicillium subfamily, botrytis Botrytis squarron Botrytissamia Walker. After the onset of symptoms on the leaves can be divided into white spots, dry