用性信息素加农药诱杀器防治梨小食心虫的田间试验

在设计出性信息素加农药诱杀器后，以60、135、240、480个／km2诱杀器田间处理，看出以135个／km2诱杀器处理即有明显的防治效果。经在不同的虫口密度果园试验，以诱蛾量下降率、为害率和雌蛾交配率3项指标考察，该诱杀器1次挂出，在田间有效期达70～80天，取得了较理想防治效果。

Field experement of the attracticide traps for controlling Grapholitha molesta Basck

The attracticide ability of the trap was tested at the densities of 60, 135, 240 and 480 trap / km2 after the frustum trap was designed. lt was shown that under low density of the population of Grapholitha molesta Busck, the trap at the density of 135 trap / km2 appeared aperently ability to contfol the pest. The traps maintained effective in about 70-80 days at orchard when they were tested under different orchards, by the survey of the three criterla: the declining rate of moth nummber in monitoring traps, the damage rate and the ratc of the mated females. The result cf controlling the pest was reasonable.