根据春季全省各测报站对玉米螟、粟灰螟虫冬后基数及存活情况调查,结合玉米、谷子等寄主作物种植生长情况和未来气象条件等因素综合分析,预计今年一代玉米螟总体为中等发生,中部玉米主产区和忻定原盆地甜(糯)玉米集中种植区偏重发生,发生面积400~450万亩,6月下旬进入防治适期;粟灰螟偏轻,吕梁、忻州边坡山区中等发生,发生面积150万亩左右。 Based on the investigation of the post-winter alfalfa and the survival rate of corn borer and corn borer at the stations in spring in the province, combined with the analysis of the planting and growth of the host crops such as corn and millet and the future meteorological conditions, it is estimated that the generation of corn borer will be medium , The central corn producing areas and the Xin Dingyuan basin concentrated sweet corn (corn) focus on the occurrence of the area, the occurrence of an area of ​​400 to 450 mu, early June into the control period; millet borer light, Luliang, Xinzhou slope Moderate occurred, occurred around 150 acres of area.