近几年来，随着干红酒消费的迅速增长，天津地区梅鹿辄品种的种植面积急剧扩大。然而，从１９９８年春开始我们发现在新发展的地区，如天津蓟县、河北遵化等地区，该品种部分植株于定植后第二年春季开始出现生长异常，既使没有发病的植株，也有随着产量的增加，树势日趋衰弱的 In recent years, with the rapid growth of the consumption of dry red wine, the cultivated area of ​​Merlot varieties in Tianjin has rapidly expanded. However, starting from the spring of 1998, we found that in newly developed areas such as Tianjin Jixian County and Zunhua Hebei Province, some species of this variety began to grow abnormally in the spring after the second year after planting, and even with no diseased plants, Increased output, the growing decline of the tree