近年来,二化螟在杭嘉湖平原地区已成为水稻上的主要害虫,尤以一、二代发生量大、为害猖獗。据已往资料,二化螟越冬场所主要是稻根、稻草和白茭白;也有认为少量在杂草及春花植株中,但对后者并未引起重视,测 In recent years, Chilo suppressalis has become a major pest on rice in the Hangjiahu Plain, especially in the first and second generation, causing serious damage. According to past data, the stems of rice stem borers are mostly rice roots, rice straw and white sandwiched white; there are also a small amount of weeds and spring plants, but the latter did not attract much attention