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番茄病毒病具有发生普遍、危害严重、防治难度大的特点,发病田块一般减产20%～30%,重者减产50%以上。还可使番茄品质下降,风味降低,严重影响经济效益,是番茄生产中的重大障碍。一、田间主要症状①花叶症状叶片上出现黄绿相间或深浅相间的斑驳,叶脉叶片略有皱缩,病株较健株略矮。露地番茄在5月中旬至6月中旬发生,春季温室番茄发病以烟草花叶病毒(TMV)为主。②条斑症状在高温强光条件下烟
Tomato virus disease has a common, serious harm, prevention and treatment of difficult characteristics, the general reduction of 20% to 30% field plots, severe cases of more than 50% reduction in production. It can also reduce the quality of tomatoes, reduce flavor, seriously affect the economic benefits, is a major obstacle in tomato production. First, the main symptoms of the field ① Mosaic symptoms appear yellowish green leaves on the phase or the depth of the mottled leaves, leaves a slight shrinkage leaves, diseased plants slightly shorter than the healthy plants. Open tomato occurs in mid-May to mid-June. The incidence of tomato in spring greenhouse is dominated by tobacco mosaic virus (TMV). ② streak symptoms in the high temperature and light conditions, smoke