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病毒病是京郊番茄的重要病害之一,通常年份减产5—10%,流行年份减产20—40%,严重地块达50%以上,对番茄产量和品质影响极大。番茄病毒病是由烟草花叶病毒(TMV),黄瓜花叶病毒(CMV)等引起的。主要症状有花叶、条斑、蕨叶、矮化等。据鉴定,春季保护地番茄以TMV为主,春栽露地番茄TMV和CMV并重,夏秋番茄以CMV为主。TMV机械传播,CMV蚜虫(主要是桃蚜)传播,机械也能传播。从病株采收的种子、病根、残枝落叶是TMV的初浸染源。整枝打顶、生长素蘸花、中耕锄草等农事操
Virus disease is one of the most important diseases of tomato in the suburbs of Beijing. Generally, the annual yield is 5-10%, the popular year is 20-40%, and the serious block is more than 50%, which greatly affects the yield and quality of tomato. Tomato virus disease is caused by tobacco mosaic virus (TMV), cucumber mosaic virus (CMV) and the like. The main symptoms are mosaic, streaks, fern leaves, dwarf and so on. It was identified that in the spring to protect the tomato to TMV-based, spring planting open tomato TMV and CMV, summer and autumn to CMV-based. Transmission of TMV machinery, CMV aphids (mainly Myzus persicae) spread, the machinery can spread. Seeds harvested from diseased plants, diseased roots, and residual leaves were the primary sources of TMV. Topiary pruning, auxin dipped in flowers, cultivating weeds and other agricultural exercises