不同诱捕技术对松褐天牛的诱捕效果

Field attraction effects of different trapping methods on Monochamus alternatus

通过不同引诱剂、不同诱芯、不同诱捕器和不同缓释量对松褐天牛的诱捕试验 ,结果表明 ,4种引诱剂对松褐天牛都有一定的引诱效果 .其中 ,引诱剂MA2K 0 5的效果最好 ,引诱活性平均为 2 6 3头 /诱捕器 ,对其它鞘翅目和半翅目昆虫也有引诱作用 ;引诱剂MA2K 1 3活性次之 ,平均 2 1 3头 /诱捕器 ;MA2K1 1最弱 ,平均 1 3 8头 /诱捕器 .3种诱芯A、B和C的引诱效果分别为 1 4 73、4 2 5和 2 0 3头 /诱捕器 ,其中诱芯C内引诱剂总量为诱芯A或诱芯B的 2 5倍 ,且诱芯C内的引诱剂 3～ 5d需添加一次 ,而诱芯A和诱芯B的引诱活性能持续 1个月以上 ,因此 ,诱芯B较为理想 .宣州诱捕器引诱效果显著高于日式诱捕器 ,分别为 36 4和 9 7头 /诱捕器 .不同剂量诱捕结果表明 ,随着诱芯缓释量的增加 ,诱捕效果也相应提高 ,当剂量从 2 0ml上升至 80ml时 ,诱捕效果增加不显著 ;当诱剂达 1 2 0ml时 ,引诱效果显著增加 .

A comparative study on the field attraction effects of different attractant,trap,lure and controlled releasing amount on Monochamus alternatus showed that four test attractants had a certain trapping ability to Monochamus alternatus ,among which,MA2K05 was the strongest,with a mean capture efficiency of 26.3 individuals each trap and being attractive to other species of Loleoptera and Hemiptera; MA2K13 took the second place,with 21.3 individuals each trap; while MA2K11 was the weakest,with 13.8 individuals each trap.Among the three lures tested,lures C (60 ml plastic cup with 2 of 5 cm round holes on the cover) and B (20 ml specified controlled releasing plastic bottle) had a comparatively stronger effect,with a capture efficiency of 34.25 and 20 3 individuals each trap,respectively; while lure A (20 ml specified controlled releasing plastic bottle,the releasing amount being smaller than that of lure B) was the weakest,with 14.7 individuals each trap.Because the attractant volume of lure C was 1.5 times larger than that of lures B and A,and the attractant for lure C was appended every 3～5 d,while that for lures B and A could be used for more than a month with once appended,lure B was the best on the whole.As for the test traps,Xuanzhou trap was superior to imitated Japanese trap,with a trapping efficiency of 36.4 and 9.7 individuals each trap,respectively.The attractiveness of attractants was not significantly enhanced when the dosage was increased from 20 ml to 80 ml,but significantly improved when it was up to 120 ml.