4种不同性诱剂对玉米草地贪夜蛾诱集作用

Trapping effect of four different sex attractants on Spodoptera frugiperda

为准确掌握草地贪夜蛾成虫发生动态,筛选对当地种群专一性强、灵敏度高的性诱剂,对深圳百乐宝生物农业科技有限公司(BLB)、宁波纽康生物技术有限公司(NK)、江苏宁录科技股份有限公司(NL)、南京新安中绿生物科技有限公司(XAZL)4个厂家生产的草地贪夜蛾性诱剂在江苏盐城市大丰区进行田间诱捕效果试验,探讨草地贪夜蛾性诱剂的使用技术。结果表明:4种不同性诱剂诱芯对草地贪夜蛾的诱集效果存在明显差异。BLB诱芯和NL诱芯可以有效监测草地贪夜蛾成虫田间发生动态,羽化高峰期明显,且峰值日期一致,NK诱芯诱集的成虫虫峰不明显,XAZL诱芯零星诱到成虫,无明显成虫高峰;BLB诱芯监测期内日均诱蛾量、最高单次诱蛾量、总诱蛾量均显著高于其他3种诱芯,其总诱蛾量达136.75头,分别是NL诱芯、NK诱芯、XAZL诱芯的1.47倍、4.76倍、10.52倍;通过对BLB诱芯进行持续30 d和持续60 d的诱捕对比试验,发现BLB诱芯1~30 d内诱捕性能稳定,诱蛾量大,31~60 d内日均诱蛾量、最高单次诱蛾量、总诱蛾量均有所下降且达显著水平,尤其是50 d后诱捕量下降明显。结果表明:BLB诱芯的诱蛾量大,能够明显反映出草地贪夜蛾的羽化高峰期,符合测报要求,更适合本地区草地贪夜蛾的监测,使用该诱芯时建议30 d更换1次。

In order to accurately monitor the occurrence dynamics of the adults of Spodoptera frugiperda,the attract effect of sex pheromone attractants produced by Shenzhen Bailebao Bio-Agricultural Technology Co.,Ltd.(BLB)and Ningbo Newcom Biotechnology Co.,Ltd.(NK),Jiangsu Ninglu Technology Co.,Ltd.(NL)and Nanjing Xin’an ZhonglüBiotechnology Co.,Ltd.(XAZL)were compared in the corn field at Dafeng district of Yancheng city,Jiangsu province.The results showed that the trapping effects of the four sex attractants were significantly different.When the products of BLB and NL were used in monitoring the occurrence dynamics of S.frugiperda adult,the peak period of emergence is obvious,and the peak date monitored by the two products is consistent.While the peak date monitored by NK product is not obvious,and the XAZL product attracted very few moths,and there is no obvious adult peak.The daily average moth amount,the maximum moth amount per day and total moth amount were significantly higher than the other three products during the monitoring period.The total amount of moth attracted by the BLB lure was 136.75 individuals,which were 1.47 times,4.76 times and 10.52 times of that the NL,NK and XAZL attractants.The trapping performance of BLB lure was stable within first 30 d.However,the daily average moth amount,the maximum moth amount per day and the total moth amount were all significantly decreased during the second 30 d,especially after 50 days.The results showed that the BLB lure is more suitable for the monitoring of S.frugiperda in this area.It is recommended to replace it every 30 days.