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1998～ 1999年 ,六 (4)代稻纵卷叶螟在东台市连续大发生 ,未治田块水稻产量损失率分别为 11 71%和12 43%。笔者就其大发生的原因进行了分析 ,并对测报技术提出了改进意见。
From 1998 to 1999, six (4) generations of Cnaphalocrocis medinalis occurred continuously in Dongtai City. The yield loss rate of unmanaged rice was 11 71% and 12 43% respectively. The author analyzes the reasons for its occurrence, and puts forward suggestions for improvement of forecasting technology.