大白菜干烧病是我市普遍发生的一种蔬菜生理性病害,尤以涂园菜区发生最重,一般年份发病率达30—40%,严重时可达80%以上,受害植株轻则叶缘焦边干枯卷曲,局部球叶叶肉呈干纸状,产量和品质下降,重则嫩叶重度干枯,生长严重受阻,不能结球,导致基本绝收。我市涂园菜地约15万亩,主栽品种是秋大白菜,干烧病已成为发展涂园蔬菜的严重障碍。为此,我们从1996年起对该病在涂园的主发因子及其防治办法进行了较详细的研究,现将结果初报如下: Dry cabbage is a vegetable physiological disease commonly occurs in our city, especially in the garden area occurred the most, the incidence of 30-40% of the general year, up to 80% in severe cases, while the victims of light Leaf edge of coke scorch dry curl, the local leaf-leaf mesophyll was dry paper-like, yield and quality decline, while the heavy leaves of severe dry, severely blocked growth, can not catch the ball, leading to the basic income. Our city garden park about 15 acres, the main varieties are autumn cabbage, dry burn disease has become a serious obstacle to the development of garden vegetables. To this end, we from 1996 on the disease in the coating of the main factor and its prevention and treatment of a more detailed study, the results are as follows: