Rice varieties including Xiangyaxiangzhen,Tianliangyou953,Ezhong5,Tianyuanjing036，and Taiyou390 were used to study effects of sowing date on the growth period,lodging index,yield,yield components and quality of rice in the ricecrayfish ecosystem. The results showed that the main factor affecting the shortening of whole growth period was the delay of the period from sowing to jointing and the lodging resistance of most rice varieties gradually increased with the delay of sowing date. Tianyuanjing036,Tianliangyou953 and Taiyou390 had good lodging resistance.The yield of 5 rice varieties increased with the delay of sowing date.The main factors affecting rice yield are the effective panicle and 1000grain weight per unit area. The brown rice rate,white rice rate of 5 rice varieties increased and the chalkiness and chalky rice rate of 5 rice varieties decreased with the delay of sowing time.