黔东南州丘陵冷凉区高产优质水稻品种筛选OA

In order to select new rice varieties with high-yield and high-quality suitable for cultivation in the hilly and cool areas of Qiandongnan Prefecture, this study selected 12 high-quality rice varieties in market to conduct comparative experiments in Danzhai County, Guizhou Province, using the widely cultivated F-you 498 as a control. The results showed that the growth and agronomic traits of all tested varieties were normal, and all tested varieties seeded normally. In terms of yield, Yongyou 1540 had the highest yield (10607.65 kg/hm2), which was significantly higher than F-you 498, the yield increased by 7.12％ compared with F-you 498; the growth period was 167 d, plant height was 108.8 cm, effective panicles were 2.295 million/hm2, panicle length was 20.0 cm, and panicle number was 212.8. It could be further demonstrated and promoted as a high-quality rice variety in the local area. The yield of Linliangyou Huazhan, Rong 18 You 2348, Quanyou Efeng Simiao, and Jinlongyou 263 increased by 5.98％, 4.55％, 3.79％ and 0.38％ respectively compared with F-you 498. Among these four varieties, except for Jinlongyou 263, which had no significant difference in yield compared with F-you 498, the yield of the other three varieties was significantly higher than that of F-you 498, and further multi-point experiments and demonstrations could be conducted.