杨梅俗称青梅、黄梅,为常绿乔木。每逢盛夏,时值水果淡季,而杨梅以颜色鲜艳、酸甜适口、风味独特而应时上市。福鼎县自1984年以来,引进良种杨梅155万株,不但绿化了很多荒山、美化了104国道,而且增加了农民收入。但近几年,由于膨叶病的暴发流行,不仅产量明显下降,而且品质也受到严重影响。叶片受害后呈短小畸形,密集丛生、肥厚,叶面皱缩粗糙;被害枝梢肥大短缩,停止生长,老化。病株结果少或完全不结果,果肉突刺少,汁苦涩,果小而僵,未熟先落,树势早 Myrica commonly known as plum, plum, as evergreen trees. Every summer, the time when the fruit off-season, while the bright red color, sweet and sour taste, unique flavor and should be listed. Fuding County since 1984, the introduction of 1550000 seedling Yangmei, not only greening a lot of barren hills, landscaping 104 State Road, but also increased the income of farmers. However, in recent years, due to the outbreak of ecchymosis, not only the output has dropped markedly, but the quality has also been severely affected. Leaf damage was a short deformity, dense tufts, hypertrophy, folds rough; killed shoots hypertrophy shortening, stop growing, aging. Sick strain results in little or no result, the flesh spikes less juice bitter, fruit small and stiff, immature first fall, Shu Zhisheng