Screening of Rice Cultivars Suitable for Ratooning in Hengyang City
This study compared the productivity of rice cultivars with different maturity seasons in ratooning,aiming to provide reference for screening suitable rice cultivars for ratooning in Hengyang City.A plot experiment was conducted with 13 mid-season rice cultivars and 1 late-season rice cultivar planted extensively in Hengyang City.The growth period,plant type,resistance,economic traits,and yield of the tested cultivars in the first and ratooning seasons were compared.The results showed that the cultivars with different maturity seasons demonstrated significant yield differences in the first season,ratooning season,and the whole year.The yield in the first season demonstrated significantly positive correlations with growth period,daily yield,effective panicle number,and grain-setting rate.The yield in the ratooning season had significantly positive correlations with daily yield,effective panicle number,and thousand grain weight.The annual yield showcased significantly positive correlations with the grain-setting rate in the first season,and the yield,daily yield,and thousand grain weight in the ratooning season.'Shenliangyou 867','Weiliangyou 8612',and'Yunliangyou 332'achieved the annual yields of over 15 000 kg/hm2 and thus served as the preferred cultivars for the ratooning in Hengyang City.'Shenliangyou 475','C-Liangyou Huazhan','Jingliangyou 1468','Longliangyou 1212','Jingliangyou Huazhan',and'Y-Liangyou 911'with good performance could be selected according to local planting conditions.
万方数据
维普
