摘要
１９９４～１９９５年在山东省用人造卵繁殖螟黄赤眼蜂，进行防治棉铃虫的研究。人造卵的寄生率为９１．１４％，出蜂率为８９．６８％，每张卵卡有人造卵１４０粒，可出蜂３０００头。冷藏虫态以前蛹期为宜，冷藏１５和２０天，出蜂率分别为８７．２６％和８２．８１％。人造卵出蜂比较集中，２天内可基本出完。成蜂饲喂蜂蜜可显著延长寿命。纸袋出蜂器出蜂率可达９１．８３％～９９．０９％。棉田释放人造卵蜂防治第２代棉铃虫，１９９５年寄生率为８０．３１％，最高达９３．７５％，防治效果稍好于施药区。防治第３代棉铃虫的效果较低，寄生率仅有４２．９７％，原因与蜂卡冷藏时间长以及高温多雨有关。放蜂区捕食性天敌数量比施药区高４．０３～９．３６倍，对棉蚜、棉叶螨有较好的控制作用，一般不需防治。
Method of using Trichogramma chilonis reared on artificial eggs to control cotton bollworm was studied in Shandong province from 1994 to 1995. The paresitoid showed 91.4% parasitic rate and 89.68% emergence rate. There were 140 artificial eggs on one wasp card from which some 3000 wasps could emerge. The prepupal stage of the parasitoid could be stored for 15 20d in refrigerator. The emergence rates were 87.26% and 82.81%, and these were accomplished in two days. The adult wasps could live longer while honey was provided to them. Emerge rate of 91 83% to 90.09% were observed from paper bag release container. Field releases were made to control the bollworm, and the parasitic rate were 80.31% to 93.75%, and 42.97% for the third generation bollworm. Predator population density in Trichogramma released area was 4.03 9.36 times higher than that in chemical control area.
出处
《中国生物防治》
CSCD
1997年第1期6-9,共4页
Chinese Journal of Biological Control
关键词
螟黄赤眼蜂
人造卵繁蜂
棉铃虫
artificial eggs Trichogramma chilonis Helicoverpa armigera
