论文部分内容阅读
近年来,由于带毒种苗和传毒害虫的传播,设施番茄中的病毒病呈现发生范围逐年扩大的趋势,有的菜农技术管理不到位,造成严重损失,必须引起高度重视。一、发病症状番茄病毒病常见的症状有花叶、条斑和蕨叶3种。花叶型:一种是在番茄叶片上起轻微花叶,植株不矮、不变形,另一种是叶片上有明显的花叶,新叶变小,叶细小狭窄,扭曲畸形,果小质劣,多呈花脸状。条斑型:上部叶片呈现深浅绿色相间的花叶病斑,茎秆上中部初呈暗绿色下陷的短条纹,后
In recent years, due to the spread of poisonous seedlings and poisonous pests, the occurrence of virus diseases in facility tomatoes has been expanding year by year. Some vegetable farmers lack technical management and cause serious losses, which deserves great attention. First, the symptoms of tomato virus disease common symptoms are mosaic, streaks and fern leaves 3 species. Mosaic type: one is on the tomato leaves play a slight mosaic, the plant is not short, no deformation, the other is the leaves have obvious mosaic, smaller new leaves, small leaf stenosis, distortion, malformation Bad, mostly painted face. Streaky type: the upper leaves showed shades of green and white mosaic lesions, stems in the middle of early dark green subsidence of the short stripes, after