关键词: 连作晚稻, 新品种, 生育期, 产量

Abstract:

To ensure the smooth implementation of the large-scale increase in rice yield action，Jiangshan City has actively carried out comparative experiments on new varieties of late-season rice for consecutive cultivation.To screen out suitable varieties for promotion and planting，and enrich the variety choices for large-scale planting entities， this study compared the production characteristics and yields of 21 new varieties of late-season rice for consecutive cultivation. The results showed that in terms of yield and growth period，6 varieties including Yongyou 7053，Yongyou 7860，Chunyou 167，and Huazhongyou 4916 generally performed better in terms of yield，which was higher than the control variety Yongyou 1540. Moreover，their growth periods were close to that of Yongyou 1540，and they had good field resistance，without lodging. Under the existing cultivation technology models in Jiangshan City，these varieties are suitable for promotion and planting.

Key words: continuous cropping late-season rice, new variety, growth period, yield