诱虫灯对蔬菜害虫的诱杀效果及对天敌的影响

研究了频振式诱虫灯对蔬菜害虫的诱杀作用及其对天敌的影响。试验结果表明，频振式诱虫灯杀虫谱广，灯下害虫达5目10科18种。其中对鳞翅目和鞘翅目害虫的诱集效果最好，分别占害虫总数的70．4％，18．0％；主要种类有斜纹夜蛾、甜菜夜蛾、小菜蛾、金龟子等。对半翅目害虫、双翅目害虫诱集效果一般，分别占害虫总数的5．3％。5．0％。此外，频振式诱虫灯对天敌也具有一定的杀伤作用。其中影响最大的为膜翅目昆虫，占天敌总数的57．6％，灯下益虫主要有赤眼蜂、姬蜂、金小蜂，其次为脉翅目、鞘翅目昆虫，分别占21．6％、18-4％。灯下益害虫比为1：9。在诱集到的天敌昆虫中，对寄生性天敌的诱杀影响大于捕食性天敌。

Effect of Trap Lamp on Vegetable Pests and their Natural Enemies

The effect of frequency vibration-killing lamps on vegetable pests and their natural enemies was investigated in Huizhou districts.The results showed that the frequency vibration-killing lamps trapped a wide range of pests, which belonged to 5 orders, 10 families, 20 species.The best lured effect to orders contained Lepidoptera and Coleoptera, which accounted for 70.4% and 18.0% in the total number of pests, respectively, of which the main speices were Spodoptera litura, beet armyworm, DBM and chafer.The next was Hemiptera and Diptera, which accounted for 5.3% and 5.0% , respectively.There was a few harm to the natural enemies.Beneficial insect mainly included Trichogramma, Grass Chrysopa septempunctata, Ichneumonidae, Butterfly pupae of the wasps, Green-winged ants of paederus and so on.The next was Neuroptera and Coleoptera,which reached 21.6%, 18.4%.The ratio of beneficial insects and pests is 1:9.The influence to parasitic enemies was serious than that of the predatory enemies.