茶秆竹竹笋夜蛾综合防治技术研究

Study on the Integrated Control Technique of the Noctuid on the Bamboo Shoot of Pseudosasa amabilis

对茶秆竹竹笋夜蛾的综合防治,在虫口密度较高时,应以化学防治为主,重点保护好第一批笋;在劈青的前提下,使用复配的25%笋虫灵1号、18%笋虫灵2号乳剂地面喷药,每次用药量为1 5L·hm-2,兑水75L喷洒,若在出笋初期和盛期各喷药1次,防治效果达80 0%以上;若喷药1次,应在出笋初期,防治效果亦可达64 8%;林间使用垦土、施肥等营林措施,还能进一步提高防治效果。在虫口密度明显下降后,应以营林措施、物理措施持续控制,从而达到控制茶秆竹竹笋夜蛾危害,改造低产林,培育丰产林的目的。

The Control of the noctuid on the bamboo shoot of Pseudosasa amabilis should regard chemical control as principle, and more attention should be paicl on the first bamboo shoot.In the initial and peak stage which the bamboo shoot comes up out of the gound,is to be sprayed the insecticide of 25% 'Sunchongling1' and 18%'Sunchongling2'on the ground.The result show that the effective ness can be over 80.0% Spraying the insecticide once in the initial stage which the bamboo shoot comes up out of the gound, the result may also amount to 64.8%Culturing the soil and applying fertilizering measure, can further increase the prevention and cure result.