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对棉铃虫经３００ Ｇｙ γ射线照射后的成虫交尾习性和性竞争能力进行了观察。结果表明，在室内饲养条件下，棉铃虫成虫的交尾时间大多在清晨４ ～７ 时，少数在凌晨２ ～３ 时或早上８ ～９ 时，较田间野生种群在时间上延后２５ｈ 左右。不育虫的交尾习性和交尾竞争能力与正常虫无明显差异，但不育虫的有效交尾率为６１６ ％ ， 与正常虫相比减少１／３ 。辐射不育棉铃虫一生交尾次数大多为１ 次，少数达２ ～３ 次，最多达５ 次，可认为辐照不会改变其多配性的特点。辐射不育技术作为棉铃虫综合防治的措施是可行的。
The mating habits and sexual competition ability of adult cotton bollworm (Helicoverpa armigera) exposed to 300 Gy γ-rays were observed. The results showed that most of the mating instars of H. armigera lasted from 4 to 7 in the early morning and few in the early morning from 2 to 3 in the morning or from 8 to 9 in the morning, . The infertility mating motility and mating competitiveness were not significantly different from those of normal worms, but the effective mating rate of infertile insects was 616%, which was 1/3 less than that of normal worms. Infected cotton bollworm most of his life mate times 1, a few up to 2 to 3 times, up to 5 times, can be considered that irradiation will not change its multi-sexual characteristics. Radiation sterile techniques as a comprehensive control measures of cotton bollworm is feasible.