Taking Jiangmai869 and Xumai178 as the test materials，by setting the interaction treatment of different sowing dates and spring topdressing methods，the yield increase effects of slow-release fertilizer instead of urea under different sowing dates was explored，in order to provide a theoretical basis for the realization of high yield，high efficiency，light and simplified production of wheat，in Huaibei region，Jiangsu province.The results showed as follows:the suitable sowing date was duving October 10-25th for Jiangmai869，and around October 10th for Xumai178.When the sowing stage delayed，the maximum leaf area index at booting stage，dry matter accumulation after anthesis，and the maximum number of stem and tillers all decreased，while the harvest index increased.The higher earbearing tiller percentage was achieved when planting two wheat varieties at October 25th.The grain yield was the highest when applying slow-released fertilizer at re-greening stage，due to its improvement on maximum leaf area index and dry matter accumulation.So the yield increase effect was singnificanlty better than the other three treatments，and fertilization can be carried out not waiting for irrigation or precipition，which simplifying fertilization procedure.