Control Effect of Sex Pherom one Lure against the Asian Corn Borer( Ostrinia furnacalis) in Field

We studied the trapping effects on Ostrinia furnacalis from the aspects of different hanging heights and different color traps. The results suggested that the hanging height of 1.5 - 2.0 m received a better trapping effect, but trap color had little impact on trapping effect. The sex pheromone traps at different densities were placed in corn field. The results showed that sex pheromone lure could trap adult O. furnacalis, and it was feasible to apply sex pheromone in short term fore- cast. Meanwhile, it reduced the number of larvae and eggs, thereby reducing the damage of O. furnacalis. The lure number of 10 per hm2 was more appropriate, which could result in increasing yield of 8.61% compared with control

性诱剂与黑光灯在大田诱杀杂谷螟虫试验与应用

试验中性诱剂和黑光灯诱捕器对杂谷螟虫的诱捕效果不同。在离石区测报点、忻府区测报点和五寨县测报点,性诱剂诱捕器对玉米螟的诱捕效果明显好于黑光灯诱捕器,三个地点单个性诱剂诱捕器的诱蛾量分别为黑光灯的4.4、3.1、3.3倍。根据诱捕试验结果,同时对玉米螟在大田的发生情况和防治适期做出了准确的预测预报,有效控制了当地玉米螟的灾害性发生。

雌亚洲玉米螟产生性信息素的调控作用

雌亚洲玉米螟Ostrinia furnacalis仅在黑暗期产生性信息素,性信息素的产生?脑中一种活性因子的控制,光照期、黑暗期的雌蛾脑匀浆液都有这种活性因子存在,但黑暗期脑匀浆活性较高,雄蛾脑匀浆液也有这种活性,雌大蜡螟Galleria mellonella脑匀浆液也对亚洲玉米螟雌蛾有刺激活性,保幼激素类似物ZR-512对亚洲玉米螟性信息素的产生即无刺激作用也无抑制作用。切断腹部末端神经亦不影响脑因子促使性信息素的产生和释放。

涿鹿县研究应用玉米螟性信息素防治玉米螟的历史与现状

回顾了亚洲玉米螟在涿鹿县的发生与防治历史,总结了玉米螟大发生原因及防控经验。阐述了涿鹿县20 a来研究应用性信息素防治亚洲玉米螟的历史过程和研究成果,提出了当前性诱剂应用推广面临的新课题。