论文部分内容阅读
2011～2012年在湖北省大悟县新城镇花生田比较了5种频振灯光源对花生田天敌昆虫的诱集作用。五种光源在花生田诱集到的主要天敌有瓢虫、寄生蜂、草蛉、隐翅甲和步甲。灯诱结果表明:2011年5月8日和2012年7月18日是瓢虫的两个高峰日;2011年5月8日和2012年4月18日是寄生蜂的两个高峰日;2011年5月8日是草蛉的高峰日;2011年5月31日和2012年5月12日是隐翅甲的高峰日;2011年5月8日是步甲的高峰日。在五种光源中,光源Ⅳ对瓢虫杀伤力最小,光源Ⅱ对寄生蜂和草蛉杀伤力最小,光源Ⅴ对隐翅甲和步甲杀伤力最小。综合分析表明,光源Ⅳ对花生田天敌昆虫的总杀伤力最小。研究结果不仅筛选出对花生田天敌昆虫杀伤力最小的光源,而且明确了天敌昆虫容易遭受杀伤的时间。
2011 to 2012 in Dawu County, Hubei Province, a new town of peanut fields compared five kinds of frequency light source on peanut natural enemy insects trapping. Five light sources trapped in peanut fields are the main natural enemies ladybugs, parasitic wasp, Caochao, the hidden wing and carabiner. Light induced results show that: May 8, 2011 and July 18, 2012 is the ladybug two peak days; May 8, 2011 and April 18, 2012 parasitoid was the two peak days; 2011 May 8, 2010 is the highest day of the horsetail; May 31, 2011 and May 12, 2012 is the peak day of the stealth wings; May 8, 2011 is the peak day of the carabiner. Among the five light sources, light source Ⅳ had the least lethal effect on ladybugs, light source Ⅱ had the least lethality on parasitoids and grasshoppers, and light source Ⅴ had the least lethality to both beetle and carabiner. Comprehensive analysis showed that light source Ⅳ had the least total lethality to natural enemy peanut. The results not only screened out the least damaging light source for natural enemies in peanut fields, but also made it clear that natural enemy insects are easy to be killed.