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试验结果表明，在相同施肥量条件下，播量加大２５％，晚播２１ｄ的水地春小麦产量比适播提高７．０８％，但最大播量不能超过４２０ｋｇ／ｈｍ２。在相同播量条件下，化肥用量增加３２％，比适播水地春小麦平均增产３３．６３％，但最大Ｎ、Ｐ２Ｏ５用量不能超过３２５ｋｇ／ｈｍ２和２１８ｋｇ／ｈｍ２，在播量提高３９．８％，化肥用量增加７３％时，晚播水地春小麦产量可达７５６１ｋｇ／ｈｍ２，比适播水地春小麦增产５０．４３％，加大播量在增加晚播春小麦主茎成穗数的同时引起穗子变小，千粒重下降。
The results showed that under the same fertilization conditions, the sowing amount increased 25%, and the yield of spring wheat in watering 21 days later was increased by 7.08% compared with sowing, but the maximum sowing rate could not exceed 420kg / hm2. Under the same sowing conditions, the amount of fertilizer increased by 32%, 33.63% more than the sowing spring wheat, but the maximum N and P2O5 dosage could not exceed 325kg / hm2 and 218kg / hm2, and the sowing rate increased by 39.8% , When the amount of chemical fertilizer increased by 73%, the yield of spring wheat in late sowing water could reach 7561kg / hm2, which increased 50.43% than that of suitable sowing spring wheat. Increasing the sowing amount increased the main spike number of late sowing spring wheat, Smaller, a thousand grain weight down.