桦甸市玉米螟为害情况及综合防治技术

Corn Borer Damage Situation and Comprehensive Prevention and Control Technique in Huadian

玉米螟是为害玉米的主要害虫之一,直接影响玉米产量和经济效益。选择桦甸市3个乡镇6个村,开展了连续6 a的调查。结果表明：桦甸市玉米被害株率为31%~89%,茎蛀孔数为30~282个,百株活幼虫平均为41.62头;其中2011年为偏重发生,其他年份为中等发生。分析桦甸市玉米螟为害严重的主要原因,并根据区域特点,从农业防治、生物防治、物理防治、化学防治角度提出防治措施,以期为桦甸市玉米螟防治和玉米产量提高提供技术支持。

Corn borer is one of the major pests of damaging corn, it directly influenced maize yield and economic benefit. The paper chose six villages in three towns to do the investigation in continuous 6 years. The result showed that corn plant disease is at a rate of 31% to 89% in Huadian city, stems wormholes are 30 to 282, hundreds of plants live larvae are 41.62 in average; the most serious outbreak year is 2011, other years are medium occurrence. The paper analyzed main reasons of having corn borer damage, and raised prevention and control measures from the aspects of agricultural prevention and control, biological prevention and control, physical prevention and control and chemical prevention and control according to regional features, in order to provide technical support for corn borer prevention and control and corn yield increasing in Huadian city.