受今年稻飞虱迁入时间早的影响,加之部分田块对早稻破口抽穗初期用药防治的忽视,致使稻飞虱在彭泽县部分地方的田块内繁殖快,虫口基数偏高,个别田块出现了穿顶现象,重于去年同期,这是历年所少见的。早稻田内百丛虫量一般300～800 Affected by the early migration of planthoppers in this year, coupled with the neglect of prevention and treatment of initial stage of heading of early rice by some plots, planthoppers breed rapidly in some plots of Pengze County with high base number of insects, Field appeared to wear the top phenomenon, heavier than the same period last year, which is rare in calendar years. The amount of hundred bugs in the early rice fields is generally 300 ~ 800