七十年代以来,稻纵卷叶螟(Cnaphalocrocis medinalis Guence)已上升为我县稻作主要害虫之一,尤以晚稻受害为重,受害叶片枯白,造成不实籽粒增加,降低产量。为提出适合本县的预测预报方法,便于采取有效防治措施。从一九八○年五月开始,我们就其发生规律进行了初步研究。 Since the 1970s, the Cnaphalocrocis medinalis Guence has risen to become one of the major pests in rice paddies in our county. Especially in the late rice, the damage was the most serious and the affected leaves were withered, resulting in the increase of unfilled grains and the decrease of yield. In order to put forward the forecast forecasting method suitable for this county, it is convenient to take effective prevention and control measures. Starting from May 1980, we conducted a preliminary study on the law of its occurrence.