我场在农业技术调查时,发现沿播种拖拉机链轨过处所播的麦子,由于覆士不良,播深不均,其出苗率和产量都受到了影响。在一般的田地上,出苗率为88.6%,单位面积产量为1,400公斤;但在链轨走过的土地上出苗率只有69.5%,产量则减到1,100公斤。这就是说,链轨走过的土地比一般的土 During the investigation of agricultural technology in my field, I found that the wheat sown along the track of the seeding tractor chain affected the emergence rate and yield of wheat due to poor shrubs and poor sowing depth. In general fields, the emergence rate was 88.6% and the yield per unit area was 1,400 kg; however, the emergence rate was only 69.5% and the yield was reduced to 1,100 kg on the land along the track. This means that the track goes through more land than the average soil