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高粱是黑龙江省主要栽培作物,受玉米螟危害也很严重,一般受害率30～40%,以往对高粱上玉米螟发生规律研究得较少,防治时期不十分明确,加上防治方法有困难,高粱玉米螟防治往往被忽视。但是,近几年来随高粱早矮密栽培法的推广,高粱产量随之大幅度提高,玉米螟对高粱的危害也相应加重。高粱玉米螟防治成败关键是防治时期预报准确与否。为此,我们从1978～1980年对高粱植株上玉米螟幼虫转移规律进行了研究,并根据幼虫在植株上转移规律,以高粱生育期为指标,对高粱玉米螟防治时期提出了准确可靠的预报方法。
Sorghum is the major cultivated crop in Heilongjiang Province, which is also endangered by corn borer. The damage rate is generally 30-40%. In the past, the research on the occurrence of corn borer on sorghum was relatively rare, the control period was not very clear, and the control methods were difficult. Sorghum corn borer control is often overlooked. However, with the popularization of early short paddy cultivation of sorghum in recent years, the output of sorghum has greatly increased, and the harm of corn borer to sorghum has also correspondingly increased. The key to the success of corn borer prevention and control of sorghum is the prevention and control of the forecast accurately or not. Therefore, from 1978 to 1980, we studied the larvae translocation of corn borer on sorghum plants. Based on the larvae ’s law of plant translocation and sorghum growth period as an indicator, we put forward an accurate and reliable forecast for the control period of corn borer method.