膏体迷向剂对苹果园梨小、桃小食心虫的防效

摘要

A dual sex pheromone cream against the oriental fruit moth and peach fruit moth in apple orchards was tested in Ningxia in 2013.The tested area was divided into four parts.The dual pheromone cream was smeared on the tree trunk 3.5 m and 3.5 m/4.5 m alternately above the ground in plots A and B,no smearing in plot C from the plot B,and the blank plot.There were two smearing ways,smearing on the tree and smearing in a bottle.Trap catches in the whole year and the rates of damaged fruits were investigated.The results showed that the phero-mone cream reduced the damage by oriental fruit moth effectively.The numbers of captured oriental fruit moth decreased by 76.68%,70.80% and 36.8%,respectively,compared to those in blank plot.The damaged fruit rates by oriental fruit moth reduced by 84.88%,91.39% and 24.19% in plots A,B and C,respectively.Howev-er,we could not determine the effect of the cream on peach fruit moth due to low population density in the season.%2013年在宁夏苹果园进行了复合膏体迷向剂对梨小、桃小食心虫防效的进一步试验，试验设3个处理（涂抹高度3．5 m、3．5 m／4．5 m 交叉涂抹、交叉涂抹空白区域）、1个对照，2种膏剂附着方式（树干附着、膏剂填装塑料瓶悬挂）。通过监测全年诱蛾量、调查果实膨大期与成熟期蛀果率分析防控效果。结果显示，复合式膏体迷向剂可有效防止梨小食心虫对果实的为害，涂抹高度3．5 m 时，梨小食心虫诱蛾量下降76．68％；交叉涂抹时，下降70．8％；交叉涂抹空白区域下降36．8％。3个处理成熟期蛀果率分别下降84．88％、91．39％、24．19％。由于试验区桃小食心虫种群密度小，试验无法确定该迷向剂对桃小食心虫的防治效果。