三种无公害药剂对栎实象甲防治效果的研究

Study on the control effect of three non-pollution insecticides for Curculio( Balaninus) dentipes

采用0.26%苦参碱水剂、2%噻虫啉微胶囊悬浮剂、25%灭幼脲悬浮剂3种药剂,利用室内药浸法和林内常规喷雾法进行橡实象甲防治试验,结果表明:0.26%苦参碱水剂对橡实象甲的药效最差,室内死亡率仅为25.0%,林间防治效果也只有20.8%;2%噻虫啉微胶囊悬浮剂和灭幼脲悬浮剂对橡实象甲成虫的控制作用明显,室内死亡率分别为100.0%和87.5%,林间防治效果分别为77.1%和74.3%。考虑到防治成本和施药的难易程度,在大面积防治橡实象甲时建议选用灭幼脲。

0.26%sophocarpidine water aqua , 2%thiacloprid microcapsule suspending agent and 25%chlorbenzuron sus-pending agent were taken to precede controlling experiments of Curculio （ Balaninus） dentipes by using indoor drug leaching method and spraying method in forest area , results indicated that 0.26%sophocarpidine water aqua showed the worst pesti-cide effect to Curculio （Balaninus） dentipes, indoor death rate was 25.0%, control efficiency in forestarea was 20.8%. 2%thiacloprid microcapsule suspending agent and chlorbenzuron suspending agent presented obviously control effect to a -dult Curculio （Balaninus） dentipes, indoor death rate was 100.0%and 87.5%, respectively, where the control efficiency in forest area was 77.1% and74.3%,respectively.Considering the control cost and complexity of applying pesticide , chlorbenzuron suspending agent was suggested to use to control Curculio （Balaninus） dentipes in large area.