不同小菜蛾性诱剂诱芯品种比较试验

Comparison Experiment of Different Sex Pheromone Traps of Diamondback Moth,Plutella Xylotessa L.

性诱剂能有效诱杀小菜蛾的成虫,减轻其发生为害,并降低农药用量。为了筛选出高效的小菜蛾诱芯品种,通过大田试验,对6种小菜蛾性诱剂品种的诱捕效率进行了比较。结果表明,在30天内,诱芯A、B、F的日平均诱蛾量相近,极显著高于诱芯C、E、D,它们在诱蛾灵敏度和最高单日诱捕量方面的差异亦然。但在不同时段内,其诱捕性能表现各异。在1～10天内,诱芯A显著高于B、F,诱芯E、C显著高于诱芯D;11～20天内,诱芯A和诱芯B的诱捕量相近,诱芯F的诱捕量较低,诱芯E高于C、D;21～30天内,诱芯A、B、F的诱捕量相似,但是以诱芯B的略高于A、F。

The sex pheromone trap was effective to capture adults diamondback moth （Plutella xylostella）.By using sex pheromone trap,the diamondback moth population can be reduced and the pesticide usage will be decreased obviously.The trapping efficiency of six sex pheromone lure of diamondback moth was compared,to filtrate the higher efficiency of Plutella xylosella lures.The results showed that,the daily mean number of the diamondback moths trapped by lure A,B,F was significantly higher than other lure C,E,D,lure A,B,F was close to each other.They were also showed the same results occur on the sensitivity of improved trap and the maximum trapped number in one day during the 30 days.But the trapping properties were different with various times.In the 1 st-10 th day,the efficiency of lure A were significantly higher than any other induced core;lure E,C were also significantly higher than those lure D.In the 11 th-20 th day,the number of the diamondback moths trapped by lure A and B were very close,but the lure F was relative small.At the same time,the number trapped by lure E was much more than C,D.In the 21 st-30 th day,the numbers of diamondback month trapped by lure A,B,F were similar to each other.