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大棚西葫芦主要病害有病毒病、霜霉病、灰霉病、白粉病、菌核病。在防治措施上,除严格控制温、湿度合理浇水追肥,提高植株抗性能力外,还要掌握各种病害的症状,及时采用药剂防治。 (1)病毒病:西葫芦病毒病又称花叶病。在西葫芦生长各个时期都有发病。苗期受害,子叶变黄枯萎,真叶出现浓淡绿色相间的花叶。全株发病时,新叶出现黄绿相嵌状花叶,叶片小而卷.叶面不平,并变脆发硬,使植株受到抑制。果实受害,出现畸形果,表面凹凸不平。这种病蚜虫是传播的主要媒介,因此从苗期到后期要及时防治蚜虫减少传播。
Greenhouse zucchini main diseases are virus disease, downy mildew, gray mold disease, powdery mildew, sclerotinia. In the prevention and control measures, in addition to strict control of temperature and humidity, watering top dressing reasonable, improve plant resistance, but also to grasp the symptoms of various diseases, the timely use of pharmaceutical control. (1) virus disease: zucchini virus disease, also known as mosaic disease. In the growth of zucchini during all stages of the disease. Seedling victims, cotyledons turn yellow, true leaves appear shades of green and white mosaic. The whole plant disease, the new leaves appear yellow-green phase inlay mosaic leaves, small and roll leaves uneven, and become brittle and hard, so that plants are inhibited. Fruit damage, deformities appear, the surface uneven. The disease aphids are the main medium of transmission, so from the seedling to the late prevention and control of aphids to reduce transmission.