钙果园桃小食心虫田间消长动态

Population Dynamic of Carposina sasakii Matsumura in Cerasus humilis(Bunge)Sok Orchard

桃小食心虫是一种重要的果树害虫,为害多种寄主植物。蔷薇科的钙果（欧李）是一种新兴的果树产业,近年来受到了桃小食心虫的严重为害,但是并未有文章对其种群动态进行过报道。为了掌握钙果园桃小食心虫田间种群动态的基本规律,以对桃小食心虫进行准确的预测预报,从而确定最佳的防治时期和防治方法,采用性信息素诱捕技术对2008,2009年的钙果园桃小食心虫的发生规律进行了调查。结果表明,2008年的田间虫量显著高于2009年,为2009年的1.05倍;2008年共出现3次成虫高峰,2009年只出现1次成虫高峰。并且,成虫高峰期的发生与降雨密切相关。对成虫的防治应在发生期运用性诱剂进行较长时间的连续诱杀,对卵的防治应在成虫高峰期出现的1~3 d后进行寄生蜂的释放。结果证明,钙果为桃小食心虫的又一重要寄主。

Carposina sasakii, one of the most important fruit pests, can infest multiple host plants. Cerasus humilis（Bunge）Sok is a new fruit industrial development. However, Cerasus humilis（Bunge）Sok orchard is attacked seriously by Carposina sasakii in recent years. However, there was no paper report the population dynamic of Carposina sasakii in Cerasus humilis（Bunge）Sok orchard. To grasp the population dynamic, thus doing accurate prediction and forecast to confirm the best time and method for prevention and cure.This study used sex pheromone to investigate the population dynamic of Carposina sasakii in Cerasus humilis（Bunge）Sok orchard in2008 and 2009. The result showed that number of Carposina sasakii of 2008 was higher than the number of 2009, the multiple was about1.05 times. There were three peak periods in 2008 and one peak period in 2009. And there was close relationship between adult peak period and rainfall. It should use sex pheromone to make continuous trapping for Carposina sasakii adult in emergence period for a long time, and release parasitic wasp to cure Carposina sasakii eggs 1-3 days after adult emergence peak period. This study could prove that Cerasus humilis（Bunge）Sok was a new important host plant for Carposina sasakii.