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烟蚜主要吸食幼嫩烟叶汁液,烟株受害后生长缓慢,叶片变薄、皱缩,同时分泌蜜露诱发煤污病,造成烟叶品质下降。另外,有翅蚜还传播烟草普通花叶病毒病等多种病毒病。烟蚜是四川烟草主要害虫之一,为害烟株的蚜虫主要为桃蚜。一、为害特点与发生规律1.危害特点烟蚜主要群集在烟株顶部的嫩叶背面,花和茎部等处危害,被刺吸过的部分出现微小的斑点,变成黑色、红色或者黄色,导致叶片凹凸不平、畸形、卷叶,甚至出现烟株停滞生长
The tobacco aphid mainly used juvenile tobacco leaf juice, the tobacco plants grew slowly after they were injured, the leaves became thinner and shrunken, and honeydew was also secreted to induce the coal smut disease, which resulted in the decrease of tobacco leaf quality. In addition, winged aphids also spread tobacco common mosaic virus disease and other viral diseases. Aphis is one of the major pests of tobacco in Sichuan Province. Aphids that harm tobacco plants are mainly Myzus persicae. First, the harm characteristics and occurrence of 1. Harm characteristics Aphids mainly in the top of the tobacco plant on the back of the leaves, flowers and stems and other hazards, was punctured part of the tiny spots, into black, red or yellow , Resulting in uneven leaves, deformities, curly leaves, and even tobacco stagnant growth