连云港地区蓝莓园果蝇的消长动态及田间药效试验

本研究调查了蓝莓园果蝇的发生动态，并选取6种药剂，采用常规喷雾法比较了不同药剂、不同稀释倍数的田间药效，结果表明：①蓝莓果蝇从5月至12月期间出现了5次明显的活动高峰，分别出现在6月下旬、8月上旬、9月下旬及11月上旬和中旬；②6种药剂的防治效果随稀释倍数增大而降低，随药后天数的增加而降低；6%乙基多杀菌素悬浮剂、2%甲维盐乳油、20%甲氰菊酯乳油对果蝇的防治效果好，在各供试浓度下药后15d，防治效果均在73.82%以上，具有良好的防治效果和持效性，5%印楝素乳油与0.5%苦参碱水剂在高浓度下对蓝莓果蝇具有一定的防治效果。

The population dynamics of #$NBSfruit#$NBSflies on blueberry and field efficacy of pesticides

This study investigated the population dynamics of fruit flies on blueberry and compared the field efficacy of six pesticides against blueberry fruit flies by using foliar spraying methods. The results showed that the peak activity of blueberry fruit flies appears five times during late June ,early August ,late September , early and mid November respectively; The control efficacy of six pesticides decreased with the increase of dilution and with the time of post spraying duration,. The 6% Spinetoram SC, 2% Emamectin Benzoate EC and 20% Fenpropathrin EC had good control efficacy and persistence with all different test dilution concentration which reached 73.82% or more at the 15th day after spraying, however, the 5% azadirachtin EC and 0.5% matrine agent only had a certain control effect at a high concentration .