Abstract: To provide the theoretical basis of cultivation for ‘Haihua1’ in Jiangsu area, the effect of nitrogen fertilizer on yield and related agronomic traits of ‘Haihua1’ was studied with single factor randomized block design. Tow factors randomized block design trait was carried out to investigate the effect of seeding dates and sowing densities on the grain yield. The result showed that the yield of ‘Haihua1’ was ascend in first and descend at last with increased of nitrogen fertilizer. Proper early sowing and adequate sowing densities were conductive to improving the yield. In Jiangsu Province, the most appropriate nitrogen fertilizer, sowing densities and seeding date were pure nitrogen 210 kg/hm2, 300 million/hm2 to 330 million/hm2, October 28th to November 5th respectively.