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一忻县专区地处我省中北部,全区被五台、云中及芦芽等山系分割成大小不等的平川、丘陵和峡谷。常年流水和季节性河流纵横河谷之间。在海拔780—1,100公尺的平川盆地区,以种植生育期较长、需肥较大的玉米、麦类、谷子、高梁等作物为主;在1,100公尺以上的地区,主要是种植谷子、山药、麦类、豆类等作物。随着地形和作物分布的不同,玉米螟的分布及为害情况也不一致。
A Xinxian area is located in the central and northern part of our province, the region was Wutai, cloud and Luya and other mountain system into different sizes of Hirakawa, hills and valleys. Perennial flow and seasonal rivers between the valley. In the Pingchuan basin area of 780-1,100 meters above sea level, crops such as corn, wheat, millet and sorghum which have a longer growing period and require more fertilizer are mainly planted. In areas above 1,100 meters, millet, Yam, wheat, beans and other crops. With the different terrain and crop distribution, the distribution and damage of corn borer is also inconsistent.