Comparative Study Of The New Super Hybrid Rice Combinations

In 2014,7 test sites in Central China were selected for cultivation of 11 new combinations of the super hybrid semi-late rice and 7 test sites for 11 new combinations of the super hybrid late rice. Study was focused on the yield advantages of new combinations of the super hybrid rice, by observing the main agronomic and economic characters. The main results were as the following:128.6% test sites of thesemi-late rice combinations, Chunyou 1028, Chunyou 1058, No.5, had higher yields than CK. Average yields were lower than CK.Chunyou 1028 is suitable topromote at Yongzhou and Sanming test sites. Chunyou 1058 is suitable to promote at Huaihua and Sanming test sites. No.5 is suitable to promote at Huaining test site.214.3% test sites ofthe semi-late rice combinations 50A/R3470, Liangyou 2918, No.4 had yields higher than CK. Average yiedls were lower than CK. Not suitable for promoting at any test site.3 57.1% test sites of the semi-late rice combinations 64A/QHui28, GanYouK6, JianuoLiangyouNo.6 had yields higher than CK. Average yields were lower than CK. 64A/QHui28 is suitable for promoting at Changsha, Yongzhou and Huanggang test sites. GanYouK6 is suitable to promote at Changsha, Leping and Sanming test sites. JianuoLiangyouNo.6 is suitable to promote at Changsha and Huaihua.4.85.7% test sites of the semi-late rice combinations Nei6you 454 had higher yields than CK. Average yield is 3.6% higher than CK. ExceptHuanggang, it is suitable to promote at other test sites.542.9% test sites of the semi-late rice combinations Hongliangyou 3953 had higher yields than CK. Average yield is 0.7% higher than CK. Suitable to promote at Leping and Sanming test sites.642.9% test sites of the late rice combination Gliangyou 978, Pinliangyou 419 had higher yields than CK. Average yield is 1.7% and 4.5% higher than CK. Gliangyou 978 is suitable to promote at Huanggang, Leping and Sanming test sites. Pinliangyou 419 is suitable to promote at Changsha, Yongzhou, Huanggang, Shaowu and Sanming test sites.70% sites of the late rice combination Lujiayou471,WufengA/Q1401, had higher yield than CK. Not suitable to promote at any test site.814.3% test sites of the late rice combination Chunyou 96,513S/R978, JinfengA/Q1401 had higher yields than CK. Average yield of Chunyou 96,513S/R978 is lower than CK. Chunyou 96 is suitable to promote at Huanggan test site.513S/R978 is suitable to promote at Huining test site. Average yield of JinfengA/A1401 is 2.1% higher than CK, suitable to promote at Changsha and Yongzhou test sites.928.6% test sites of the late rice combination Guangzhan63S/R978, Guangzhan 63S/R806,023S/Q1401, and 72A/Q1401 had higher yields than CK. Average yield is lower than CK. Guangzhan63S/R978 is suitable to promote at Changsha, Yongzhou and Huaihua test sites. Guangzhan63S/R806 is suitable to promote at Changsha and Huaining test sites. 023 S/Q1401 is suitable to promote at Huanggang and Shaowu test sites.72A/Q1401 is suitable to promote at Yongzhou, Leping andHuaining test sites.