玉米螟的发生与危害黑龙江省为困家重要商品粮基地。玉米为高产作物,全省年种植面积约3000万亩左右,对我省粮食总产居举足轻重地位。多年来危害玉米最重,最普遍,导致玉米大幅度减产的主要害虫——玉米螟却年年发生。1988年严重危害面积800～1000万亩,可减产5～ Occurrence and damage of corn borer Heilongjiang Province is an important commodity grain base for the poor. Corn is a high-yield crop, and the annual planting area in the province is about 30 million mu, which plays a decisive role in our province’s grain output. The corn borer, the major pest that has endangered the heaviest and most prevalent maize for many years, has led to a dramatic drop in maize. In 1988 a serious harm to the area of ​​800 to 1000 mu, can cut 5 ~