论文部分内容阅读
通过种植麦套春棉、麦套春棉播种玉米诱集带、麦套春棉邻近种植玉米三种类型的棉田，以平作春棉为对照。明确了不同类型生态区的主要害虫及天敌种群消长动态。立体种植棉田与平作春棉相比：盛期平均百株黄地老虎为害降低８７．５％；棉叶螨发生早为害重；苗蚜降低９７．８％，差异极显著；伏蚜发生量上升２０２％，差异显著；第二代棉铃虫落卵士降低３３．８％；三、四代棉铃虫落卵量差异不显著。第二代棉铃虫发生期，玉米诱集带百株累计诱集棉铃虫落卵量达１４８４粒，天敌数量最高达８４０头，明显看出种植玉米诱集带对棉铃虫有较好的诱集作用，对天敌有很好的保护和增殖作用。
By planting wheat spring cotton, wheat spring cotton sowing corn traps, wheat spring cotton adjacent to planting three types of cotton fields to Ping for spring cotton as a control. The dynamics of population dynamics of major pests and natural enemies in different types of ecoregions were clarified. Compared with plain spring cotton, the average number of yellow tiger tiger in one hundred days decreased by 87.5%; the early damage of cotton leaf mite occurred; the decrease of seedling aphid was 97.8%, the difference was extremely significant; 202%, the difference was significant; the second-generation cotton bollworm dropped by 33.8%; the third and fourth generations of cotton bollworm did not show any significant difference in egg shedding. The second generation of cotton bollworm occurrence, corn trapping one hundred strains accumulated cotton bollworm egg number reached 1484, the number of natural enemies up to 840, it is obvious that planting corn traps have a better trap on cotton bollworm Role of natural enemies have a good protection and proliferation.