Abstract: A field experiment was conducted to study the effects of mosaic arrangement of paddy rice neighboring with white melon, tomato, corn, amaranth, flowering Chinese cabbage, and spinach on the population dynamics of Cnaphalocrocis medinalis, plant hopper, and their predatory enemies. All the six mosaic arrangements decreased the abundance of C. medinalis and plant hopper significantly, compared with the control (paddy rice neighboring with fallow). In early rice growth season, the abundance of C. medinalis adults, larvae and eggs, and of plant hopper under the arrangement of paddy rice neighboring with white melon and tomato had the largest decrement, being 84.3%, 38.9%, and 24.3%, respectively; in late rice growth season, the largest decrement of the abundance under the arrangement of paddy rice neighboring with amaranth and flowering Chinese cabbage was 79.5%, 49.8% and 13.4%, respectively. Paddy rice neighboring with white melon and flowering Chinese cabbage also had a significant effect on the increase of the abundance of predatory enemies. Therefore, planting paddy rice neighboring with white melon and flowering Chinese cabbage could have the best effect in insect pest control and predatory enemies’ conservation.

Key words: Sidemia depravata, Sex pheromone, Turfgrass, (Z)-9-tetradecenyl acetate, (Z,E)-9,12-tetradecadienyl acetate