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黄瓜是我国人民的主要蔬菜,具有分布广、种植面积大、产值高的特点,特别是我国北方,塑料大棚、温室等保护地中80%以上种植黄瓜,不仅给农民带来良好的经济收益,而且使消费者四季都能吃上鲜嫩的黄瓜。但自80年代以来,从我国东北三省的部分城市开始,北方不少城市的黄瓜受到了黄瓜黑星病的为害。这种病不仅为害黄瓜茎叶,更主要的是直接加害瓜条,造成大量病瓜、畸形瓜,丧失商品价值。轻则损失15~20%,重的30%以上,甚至毁种,更为严重的是黄瓜黑星病可以通过种子作远距离的传播,直接威胁着全国广大的黄
Cucumbers are the main vegetables of our country. They are characterized by wide distribution, large acreage and high output value. In particular, more than 80% of the cucumbers in the protected areas of northern China, plastic greenhouses and greenhouses not only bring good economic benefits to farmers, And consumers can eat fresh four seasons cucumbers. However, since the 1980s, cucumbers from cucumber scab have been harmed by cucumber in many cities in the north from some cities in the three northeastern provinces of China. This disease is not only harmful to cucumber stems and leaves, but also the main direct damage to the melon, causing a lot of disease melon, deformity melon, loss of product value. Ranging from 15 to 20% loss, heavy 30% or more, and even destroy species, more serious cucumber scab can be transmitted by the seeds for long-distance transmission, a direct threat to the country’s vast yellow