一、危害症状西瓜病毒病症状主要以花叶为主,病株呈系统花叶状,顶部叶片表现浓淡相间的花叶,病叶窄小或皱缩,节间缩短,植株矮化,新生茎蔓纤细扭曲。早期发病的难以坐瓜,后期发病或发病轻的可坐瓜,但生长缓慢,瓜小且品质差。病毒病一般以单株发病为主,以单株为中心,向四周传播。 First, the harmful symptoms of watermelon virus disease mainly in mosaic-based, diseased plants were mosaic-like, the top leaves of shades and white mosaic leaves, narrow or narrow sick leaves, internodes shortening, dwarf plants, new stems Vine slender twisted. Early onset is difficult to sit melon, late onset or incidence of light can sit melon, but slow growth, melon small and poor quality. Virus disease generally single disease-based, single plant as the center, spread to the surrounding.