＜正＞The rice striped stem borer （SSB） Chilo suppressalis （Walker）, the yellow stem borer Scirpopha-ga incertulas （Walker） and the pink stem borer （PSB） Sesamia inferens Walker, are the most injurious insect ...
＜正＞The rice striped stem borer （SSB） Chilo suppressalis （Walker）, the yellow stem borer Scirpopha-ga incertulas （Walker） and the pink stem borer （PSB） Sesamia inferens Walker, are the most injurious insect pests of Yangtze Delta rice, one of the rice "bowls" and also high-speed economic developing region of China. In recent years, population densities of SSB and PSB, yield losses and cost of control have reached the highest historical records. Such high level occurrence is attributed to the area-wide shift from pure double cropping to single-double mixed cropping, the increase in yield potential of new varieties, development of high resistant level in stem borers to dimehypo, triazophos, etc. The risk of resistant development to the few current very effective insecticides （e. g. fipronil）, and the situation of harmful effects of such insecticides on fresh shrimps and crabs and honeybees impel researchers and practicers to explore and implement an alternative approach other than relying on insecticides. The indigenousness and characteristics with local dispersal between habitats implies that the area-wide approach is the probably the best way to achieve the objectives of management of the rice stem borers to such density under economic injury level, while rural environment sound and farmers healthy. Components of the area-wide management approach include: （1） Ploughing and irrigation of the fallowed rice paddy in the early spring to kill the overwintering larvae and pupae;（2） Postponing and synchronization of the seeding and transplanting dates of rice to reduce the oviposition opportunity of overwintered moths;（3） Utilization of stem borer mid-resistant varieties of rice;（4） Use of pheromone of SSB, and high effective light traps to trap and kill moths;（5） No early spraying of insecticides within 30 days after transplanting, and use of microbial insecticides in mid-damaging fields and fipronil in high damaging fields;（6） Improvement of information transmission pathw
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