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新研究表明,一种叫做三刺苜蓿角蝉(three-cornered alfalfa treehopper)的昆虫可能传播葡萄树红斑病毒。葡萄红斑病(red blotch)是一种新的病毒病,能导致葡萄叶片失绿,果实含糖量降低。加州科学家艾伦·魏表示:“除了干旱,过去十年,葡萄农所面临的最严重问题就是红斑病。”感染这种病毒的葡萄树长出的浆果较小,达不到完全成熟,夏季时染病葡萄树的叶子出现红色斑
New research shows that an insect called the three-cornered alfalfa treehopper may spread the grapevine leaf spot virus. Red blotch is a new viral disease that causes the grape leaves to turn green and reduce the sugar content of the fruit. Ellen Wei, a California scientist, said: “In addition to drought, the most serious problem facing grapevines over the past decade is erythema.” The grapes infected with this virus grew smaller berries and did not reach full maturity In summer, red spots appear on the leaves of infected grapevines