[目的]了解蔗扁蛾幼虫在甘蔗上的生物学特性.[方法]通过不同寄主对蔗扁蛾幼虫的饲养试验,观察并对比分析蔗扁蛾幼虫在甘蔗上的生物学特性.[结果]甘蔗饲养蔗扁蛾幼虫死亡率高于马铃薯饲养,幼虫为8龄,幼虫发育历期比马铃薯饲养的高出34.6 d,完成1个世代平均需要98.8 d.从幼虫头宽、体长和体重的观测值来看,甘蔗饲养的蔗扁蛾幼虫基本符合幼虫生长发育规律.[结论]研究结果为制定蔗扁蛾的有效防控措施,保证甘蔗的安全生产提供了理论依据.%[ Objective ] The paper was to understand the biological characteristics of Opogona sacchari (Bojer) larv(a)e in sugarcane. [ Method] Through the rearing test of O. sacchari larváe with different hosts, the biological characteristics of O. sacchari larvae in sugarcane were observed and analyzed. [ Result ] The mortality rate of O. sacchari larvae fed with sugarcane was higher than that fed with potato. The larva had 8 instars, and the development duration of the larvae fed with sugarcane was 34.6 d longer than that fed with potato. The larvae needed about 98.8 d to complete a generation in average. Viewed from the observation values of head width, body length and weight of larvae, O.sacchari larvae fed with sugarcane were basically accorded with the growth and development law of larvae. [ Conclusion ] The results provided theoretical basis for the preparation of effective measures against O. sacchari and the assurance of safe production of sugarcane.
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