Abstract: In order to clarify the suitable combination of sowing time and seeding quantity to make it match with good breed, and better encourage Fertility of ‘Zhengmai7698’ in north Henan, we studied yield formation under different sowing time and seeding quantity. The results showed that: with the sowing time delay, efficient panicle of unit-acreage reduced, kernel number increased, sowing time was not significant affect on grain weight, with the delayed sowing, yield gradually reduced. With the increase of seeding quantity, efficient panicle of unit-acreage increased, kernel number reduced, sowing time was not significant affect on grain weight, the highest seeding quantity treatment (225 kg/hm2) had the maximum yield. The combination of ‘Zhengmai 7698’ had the highest yield for sowing time was October 10th, sowing quantity was 225 kg/hm2, when sowing time was October 10th, and sowing quantity was 187.5 kg/hm2, the yield was second. According to the grain yield of all the combinations of sowing time and planting density, October 5th to 10th was the best sowing time of ‘Zhengmai 7698’ in north Henan, with the seeding quantity was about 225 kg/hm2.