经田间调查统计分析结果表明,临夏州高寒阴湿区选用4.5%高效氯氰菊酯乳油按药剂1 500倍液叶面喷施防治油菜茎象甲,虫害危害指数9.7%,防治效果达88.2%,防虫效果最佳,较CK亩增产38.3kg,增产率18.0%;选用0.5%阿维菌素苯甲酸盐防治油菜茎象甲,其虫害危害指数11.6%,防虫效果达86.6%,较CK亩增产36.4kg,增产率17.1%;选用48%毒死蜱乳油,防治效果达82.7%,效果较好。 The results of field investigation and statistical analysis showed that 4.5% beta-cypermethrin EC was applied to control the weevil’s stem weevils in the alpine area of ​​Linxia with spraying of 1 500 times foliar spray. The pest hazard index was 9.7% and the control effect was 88.2%. The pest control effect The best yield was 38.3 kg compared with that of CK, with an increase rate of 18.0%. Using 0.5% abamectin benzoate to prevent and treat rapeseed stem beetle, the pest hazard index was 11.6% and the pest control effect was 86.6%, 36.4% more than that of CK kg, increase rate of 17.1%; selection of 48% chlorpyrifos EC, control effect of 82.7%, the effect is better.