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２００２年夏秋之交苏北东海县及邻近县市水稻田普遍发现棉铃虫，为历史所罕见。东海县植保站调查，全县约８０％的稻田有发生，一般每平方米有虫１～３头个别严重田块可达１０头以上。主要在稻穗上取食颖花和籽粒。发生特点是：①糯稻重于粳稻，粳稻重于籼稻②抽穗早的重于抽
It was rare in history to find the cotton bollworm commonly found in the paddy fields in Donghai County and its neighboring counties in northern Jiangsu Province in the summer of. Donghai County Plant Protection Station survey, the county about 80% of rice fields have occurred, generally 1 to 3 per square meter of pests of individual serious up to 10 or more. Mainly in the rice on the spikelets and grains. Occurred characteristics are: ① glutinous rice is heavier than japonica rice, japonica rice is more important than indica ② heading earlier than pumping