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为害作物 :除西葫芦外 ,还为害南瓜、笋瓜、甜瓜、西瓜、冬瓜等瓜类蔬菜。为害症状 :植株上部叶片沿叶脉失绿 ,并出现黄绿斑点 ,渐渐全株黄化 ,叶片皱缩向下卷曲 ,节间短 ,植株矮化。枯死株后期花冠扭曲畸形 ,大部不能结瓜或瓜小而畸形。或苗期 4～ 5片叶时开始发病 ,新叶表现?
Harm crop: In addition to zucchini, but also damage pumpkin, winter squash, melon, watermelon, melon and other melons vegetables. Harmful symptoms: the upper leaves of the plant are chlorotic along the veins, yellowish green spots appear, and the whole plant is gradually yellowed, the leaves are crimped downwards, the internodes are short and the plants dwarf. Late corolla twisting warp deformed deformity, most can not fruiting or melon small and deformity. Or seedling stage 4 to 5 leaves onset, new leaf performance?