Abstract: The control effects of several compound trap measures on cotton bollworm(CBW), Helicoverpa armigera (Hubner), including double wave lamp, high pressure mercury vapour lamp with sex pheromone or poplar branches-bundle trap respctively, were evaluated in cotton field in Linqing, Shandong Province, China in 1995. The main results were asfollows: The compound traps combining two different lamps with sex pheromone or poplarbranches-bundle show obvious control effect on CBW moths. The control effect is affected bythe quantity of the CBW population in the field, I. E. when a relative large quantity of CBWpopulation occurs in a generation, their control effect could have some good result, but whenthe quantity of the CBW population in the field is far beyond the ordinary level it gets smallerthan it should. After analyzing the CBW moth catches, the numbers of eggs, larvae and natural enemies in 100 individual cotton plant for each compound treatment in field comprehensively, the results indicate that the compound trap combining high pressure mercury vapourlamp with sex pheromone has the best control effect, double wave lamp with sex pheromonecomes second. Comparing with control, the number of eggs in 100 individual cotton plants in the treatment region of compound trap combining high pressure mercury vapour lamp withsex pheromone and compound trap combining double wave lamp with sex pheromone can bereduced to 34.5 96 and 28.6 % within 160m respectively.

Key words: Helicoverpa armigera, traps, compound set-up