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自1979年以来,上海近郊蔬菜区的茭白遭受长绿飞虱为害,凡未加防治或防治不及时的田块,就普遍出现成片枯死的现象,严重的往往失收。因此,长绿飞虱已成为茭白产区的主要害虫。现将1981、1982两年的研究结果总结如下。试验方法(一)饲养观察饲养观察在室外自然变温的条件下进行。1.试管个体饲养,观察雌虫产卵前期、产卵量、成虫寿命、各龄若虫历期。2.尼龙纱罩、盆栽进行个体和集体饲养,观察卵期、若虫期、产卵量、寄主范围。
Since 1979, the scallop of vegetables in the suburbs of Shanghai has been victimized by the long-green planthopper, and all the plots that have not been treated or are not controlled are generally withered into pieces and severely often lost. As a result, Nilaparvata lugens has become a major pest in the catfish production area. Now 1981,1982 two years of research findings are summarized below. Test methods (A) feeding observation Feeding observations in the natural outdoor temperature conditions. 1. Test tube individual feeding, observation female pre-oviposition, fecundity, adult life, age nymphs. 2. Nylon gauze, potted individuals and collective feeding, observation of egg stage, nymphs, fecundity, host range.