稻纵卷叶螟Cnaphalocerocis medinalis Gue-nee,是我县水稻主要害虫之一。常年以多发型的第二代大发生,近年来,三、四、五代都有发生和为害。为此,我们通过接虫饲养。笼罩自然场所及大田调查,对稻纵卷叶螟越冬基数、越冬虫态、场所、寄主、生存率及各世代繁殖系数进行了系统观察。现将结果总结如下。 Cnaphalocerocis medinalis Gue-nee is one of the major rice pests in our county. Perennial multi-hairstyle of the second generation occurred in recent years, three, four, five generations have occurred and damage. To this end, we feed the animals. Covering the natural sites and field surveys, the number of overwintering rice leaf wintering larvae, overwintering insect status, place, host, survival rate and the coefficient of reproduction of each generation were systematically observed. The results are summarized below.