沙棘红缘天牛的化学防治

Chemical Control Of Hippophae Rhamnoides

红缘天牛是沙棘主要的蛀干害虫,对沙棘的危害严重。为筛选防治红缘天牛效果较好的杀虫剂,本试验选用西维因、杀螟松和溴氰菊酯3种杀虫剂对红缘天牛的幼虫及其成虫进行试验。试验结果表明,试验选用的3种杀虫剂对红缘天牛成虫均有一定防效,成虫的死亡率分别为83.3%、88.7%和84.8%,杀螟松和溴氰菊酯处理对红缘天牛幼虫的防治效果较好,相比之下西维因处理对红缘天牛幼虫的防治效果较差,三种药剂幼虫的死亡率分别为74.2%、83.3%和80.2%。

Red border beetle is the main stem borer of Hippophae rhamnoides and is seriously harmful to Hippophae rhamnoides. In order to screen the insecticides with better effects on the control of red margin, 3 kinds of insecti- cides were tested on the larvae and adults of red margin. The test results showed that the 3 insecticides used in the experiment had a certain control effect on the adult of red margin. The mortality rate of the adult was 83, 3%, 88, 7% and 84, respectively. The control effect of the insecticide and deltamethrin on the red margin of the larva was better, compared with the treatment of the Sawyer on the red margin of the larva. The mortality rates of these insec- ticides were 74.2%, 83.3% and 80.2% respectively.