二化螟性诱芯的存贮期对田间雄蛾诱捕量有明显影响。试验在长春市进行 ,根据诱芯存贮期长短设置 2个处理 ,分别为 - 18℃条件下存贮 2～ 6个月和同样条件下存贮 33～ 37个月。结果表明 ,从 5月 19日到 9月 2 0日两种贮存期的诱芯平均每盆每日诱蛾量分别为 35 8头和 5 5头 ,后者下降 84 6 %。两种贮存期处理的单盆 1日最大诱蛾量分别为 2 2 3头和 2 0头 ,但不同处理所反映的田间蛾期却基本一致 The storage period of sexually-transmitted rice borer Chilo suppressalis had a significant effect on the amount of males trapped in the field. The experiment was carried out in Changchun City. Two treatments were set according to the storage period of the induced core, which were stored for 2 to 6 months under the conditions of -18 ℃ and stored for 33 to 37 months under the same conditions. The results showed that the average number of induced moths per pot per day for the two storage periods from May 19 to September 20 were 35.8 and 55 respectively, while the latter decreased by 84.6%. The maximum number of moths on the first day of single-pot treatment in two storage periods was 22 and 20, respectively, but the moth period was basically the same in different treatments