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近年来,我国各主要大白菜产区都受到不同程度“干烧心”病的为害.据1982年统计,一般发病率在30～50%,严重的达80～100%.我市推广“青杂三号”、“青杂五号”品种以来,也出现了“干烧心”病为害问题.一般发病率在10%,重者达70～80%.也成为我市大白菜生产的急待解决问题.自1980年以来我们进行“干烧心”病发病原因的调查及防治措施的研究,初步认为:适量用肥并在莲座后期保持土壤湿润,对防治“干烧心”病的效果良好.种在砂质土壤上的大白菜,在水、肥适量基础上喷0.5%氯化钙也有显著的防干烧病效.
In recent years, all major Chinese cabbage producing areas have been harmed by different degrees of “heartburn.” According to the statistics of 1982, the general incidence rate is between 30 and 50% and the severity reaches 80 to 100% No.3 “and” Qingza No.5 “varieties, the problem of” heartburn “disease has also appeared, with a general incidence rate of 10% and a weight of 70-80%, which has also become an urgent need for the production of Chinese cabbage Problems Since 1980, we conducted a survey on the causes of ”heartburn“ disease and preliminary studies on the prevention and cure measures. It is preliminarily believed that the proper amount of fertilizer and keeping the soil moist in the later stage of rosette are effective in preventing and curing ”heartburn" disease. Chinese cabbage on sandy soil, spraying 0.5% calcium chloride on the basis of appropriate amount of water and fertilizer also has significant anti-dry effect.