论文部分内容阅读
本试验在小岛上进行,试验表明,2.5—3万伦辐照羽化前1—2天的玉米螟蛹,温度保持在15℃,24小时内运到释放地点释放,效果比较好;辐照玉米螟蛾可以与野生种群较均匀混合,且扩散等习性亦与野生种群相同;玉米螟蛾一次不能飞翔1700米。通过连续三年释放试验,证明亚不育玉米螟在田间有较强的交尾竞争力。当释放虫与野生虫比例为0.64:1时,不育、亚不育卵块占44%,百株虫口下降了34.2%,而且辐照虫有遗传不育效应,防治效果较好。假如增加辐射亚不育玉米螟的释放量,防治效果会更佳,说明释放亚不育玉米螟是防治玉米螟危害的一种有效措施。
The experiment was carried out on a small island. The experiment showed that 2.5-3 million young radiated Maize borer pups 1-2 days before eclosion were maintained at 15 ° C and released within 24 hours after delivery to the release site, and the effect was good. Irradiation Corn borer can be more evenly mixed with the wild population, and the spread of habits and the same as the wild population; corn borer can not fly 1700 meters. Through three consecutive years of release test, proved that the Asian male corn borer in the field have a strong cross-competition. When the ratio of released worms and wild worms was 0.64: 1, the infertility resulted in 44% of the infertile eggs and 34.2% of the population of 100 infertile ones. Moreover, the irradiated insects had the effect of genetic inoculation and the control effect was better. If the release of radiation-induced infertility corn borer, the control effect will be better, indicating that the release of male sterile borer is an effective measure to prevent corn borer damage.