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夏天麦子在晒谷场上曝晒,玉米象在光照或缺光下,群体中90％以上的虫头朝北爬行,只有少量的无规律、无方向地爬行。这
Summer wheat sun exposure in the field, corn in the light or lack of light, more than 90% of the population crawling north of the worm, only a small amount of irregular, non-directional crawling. This