地下害虫是造成我区麦田缺苗断垅的最主要原因之一,春秋两次为害,以秋季播种后为害最烈。虫害种类有蝼蛄、蛴螬、金针虫、地老虎等,其中以蛴螬发生普遍而严重。泗洪县蝼蛄和蛴螬发生面积约26万余亩,占秋种面积15%以上。灵壁县七个乡的调查,受害面积占25%,被害率为5-30%。我区小麦播种适期是秋分左右,但因地下害虫在秋分时期正是 Underground pests is one of the most important causes of lack of seedlings in the wheat field in our district. It is harmed twice in spring and autumn and hardest after sowing in autumn. Pest species are 蝼 蛄, 蛴 螬, insects, tigers and other land, of which the occurrence of common 而 严 and serious. Sihong County 蝼 蛄 and 蛴 螬 area of ​​about 26 million mu, accounting for more than 15% of autumn area. Ling County seven rural survey, the victim area accounted for 25%, the damage rate of 5-30%. The area suitable for sowing wheat in my area is about the autumnal equinox but it is exactly because of the underground pests during the autumn equinox