地下害虫在商雒地区普遍分布,是多年来农业生产上存在的问题。发生的种类有蛴螬、金针虫、蝼蛄、地老虎等,是小麦、玉米两大作物的主要害虫。每年均造成严重的断垄缺苗,例如58年4月上旬在商县沙河子红光一社检查,坡地点播小麦受害簇达44%,低湿地缺苗率在20%以上。59年3月底至商县夜村公社张村生产队检查,坡地小麦死苗为28.86%, Underground pests are widely distributed in Shangyu area, which is a problem existing in agricultural production over the years. Occurred in the types of grubs, insects, emu, earth tiger, wheat, corn two major pests. For example, in early April 58 in Shanghaishe Shahezi Hongguang I community inspection, slopes, sowing wheat damaged clusters of 44%, low-marsh seedling rate of more than 20%. At the end of March 59, Zhang Village Production Team of Shangcun Nightclub commune inspected 28.86% of the wheat seedlings on the sloping land,