不同口径陷阱诱捕器诱杀梨小食心虫研究

梨小食心虫Grapholitha molesta(Busck)是重要的蛀果类害虫之一,目前性信息素广泛应用于梨小食心虫防治,为明确性信息素陷阱诱捕器的诱捕效果,针对开口方式设计四面开口和两面开口两种处理的陷阱诱捕器;针对口径的大小下设计2、3、4、5、6 cm的5种口径的对口瓶陷阱式诱捕器,分别在桃园对梨小食心虫进行诱捕试验,诱捕结果显示两面开口的诱捕器诱捕效果比四面开口的诱捕器效果显著,口径为2 cm和3 cm的陷井式诱捕器诱捕效果最佳,诱捕量显著高于5 cm和6 cm,诱捕量达34.6头/日和20.4头/日。通过试验明确了陷阱诱捕器的最佳诱捕效果的参数,同时为测报及田间大量诱杀的诱捕器使用提供依据,为防控梨小食心虫性信息素诱捕器提供标准化参数。

Study of the effect of opening pattern and different pore sizes on bottle traps to trap the oriental fruit moth

The oriental fruit moth （Grapholitha molesta （Busck）） is an important global pest of fruit trees. Sex pheromone bottle traps have been widely used to control this pest in orchards. In order to determine the most efficient trap design, we tested the relative effectiveness of bottle traps with four openings on each side vs those with two opposite openings, and pore sizes of 2 cm, 3 cm, 4 cm, 5 cm and 6 cm. The results show that traps with 2 opposite openings worked better than those with four and that the most effective traps had pore sizes of 2 cm and 3 cm. The daily average catch achieved by traps with pore sizes of 2 cm and 3 cm was 34.6 and 20.6, which was significantly more than that of traps with 6 cm pores. Therefore, we suggest that traps for the Oriental fruit moth should have two opposite openings and a pore size of 2-3 cm. These results provide a basis for improving the control of OFM in orchards.