大螟属杂食性害虫,在稻区水稻生长期,嗜好在水稻上为害,尤其是在杂优、大株型水稻上为害突出(郑坚,1980;丁俊,1981)。但是,不同水稻品种与大螟发生数量的关系如何,尚不清楚。为此,有必要进一步探讨冬季寄主、不同水稻品种以及水稻生势对大螟发生数量的影响,这在大螟测报及农业生产上都有 Sesamia inferens are omnivorous pests which are harmful to rice in rice growing season, especially in hybrid rice and large plant type rice (Zheng Jian, 1980; Ding Jun, 1981). However, the relationship between the number of different rice varieties and the occurrence of Sesamia inferers, it is not clear. Therefore, it is necessary to further investigate the influence of winter host, different rice varieties and rice on the occurrence of Sesamia inferens, both in the report of Sesamia inferens and agricultural production