二化螟食性较杂,迁移能力强,其越冬场所广泛分散,除了主要在在晚稻禾蔸内过冬外,茭白残桩和稻草中也有一定的数量。特别是在晚稻禾蔸内过冬的未成熟幼虫,来年早春常转移迁入春花作物茎稻内或田埂杂草中继续取食,并在其中化踊;即使成熟的 Stem borer dietary miscellaneous, migration ability, and its overwintering places widely dispersed, except in the late rice winter and winter, the stumps and straw also have a certain amount. Especially immature larvae that winters in the late stage of rice straw, they are often moved in early spring to move into the stems of the spring flower crops or weeds in the fields and weedy,