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自1991年以来,冬瓜病毒病在承德市时有发生。去年我市由于蚜虫的大发生,冬瓜病毒病尤为严重,一般地块发病率为40％～50％,严重地块发病率可达90％以上,减产超过7成,给生产造成了严重损失。为此我们对该病进行了系统调查研究,初步探索出一些有效的防治措施,主要结果如下: 1.冬瓜发病后,呈全株性系统花叶。发病早的病株节间缩短,植株矮化,花期叶片出现褪绿黄斑,逐渐形成斑驳或大型环斑,致使整个叶片凹凸不平。果实发病,瓜面具瘤状突起,严重的表现个小畸形。
Since 1991, melon virus disease occurs in Chengde City. Last year, due to aphids occurred in our city, melon virus disease is particularly serious, the general block incidence of 40% to 50%, the incidence of serious block up to 90% or more, more than 70% cut, resulting in serious losses to production. To this end, we conducted a systematic investigation of the disease, initially explored some effective prevention and treatment measures, the main results are as follows: 1. After the onset of melon, the whole plant was system mosaic. The earlier diseased plants were shortened internodes, dwarfed plants, chlorotic macula appeared in flowering leaves, and gradually formed mottled or large ring-shaped spots, resulting in unevenness of the entire leaves. Fruit disease, melon mask tumor-like processes, a serious performance of a small deformity.