Abstract:

In order to solve the problem of sudden or rapid population growth of major insect pests（such as aphids and diamondback moth）of cabbage in dry land，this study took the typical arid area of Hecun Village，Yangqu County，Taiyuan City，Shanxi Province as an example，selected 7 kinds of compound insecticides，and investigated the control effect of different pesticide treatments on cabbage insect pests at 1，3，7 and 14 days after treatment. The results showed that the control effects of 40% difenthiuron·thiacloprid and 5% abamectin·fenpropathrin against diamondback moth on the 3rd day after treatment were 85.1% and 91.4%， respectively， and the control effects of 5% beta-cypermethrin·hexaflumuron on the 3rd day，7 th day and 14 th day after treatment were 79.4%，87.3% and 98.3%，respectively. The control effect of 40% butoxane·thiacloprid and 5% abamectin·fenpropathrin on cabbage aphid was the best，keeping above 90.0%. Overall，5% beta-cypermethrin·hexaflumuron，40% difenthiuron·thiacloprid and 5% abamectin·fenpropathrin can effectively control the main insect pests of dryland cabbage.

Key words: cabbage, diamondback moth, aphids, chemical pesticide, efficient control