几个超级杂交水稻品种在湘西武陵山片区的栽培表现研究

目的]筛选增产潜力大、抗性较强、品质较优、适合湘西州示范推广的超级稻新品种。方法]参试品种分别为Y两优8号(湖南省杂交水稻研究中心)、双8SXR109(湖南省杂交水稻研究中心)、深两优5814(国家杂交水稻工程技术中心深圳龙岗研究所)、Y两优7号(湖南省杂交水稻研究中心)、Y两优9988(中国种业有限责任公司)、Y两优488(中国种业有限责任公司)、Y两优696(中国种业有限责任公司)、Y两优2(湖南省杂交水稻研究中心,对照)。移栽前进行秧苗素质考察分析,移栽后定期进行分蘖动态调查,抽穗期进行抗性观察,收割前进行各参试组合的抽样,并在室内进行考种、测产验收。结果]Y两优7号、双8SXR109、深两优5814生育性状良好,综合抗性好,与对照相比增产达极显著水平,且米质较好,适合在湘西州海拔500 m以下区域作一季中稻栽培。结论]该研究对提高水稻单产和正确引导稻农购买良种具有重要意义。需要强调的是,两系超级稻在山区作一季中稻栽培时,必须辅之良好的肥水管理才能获得高产。

Performance of Super Hybrid Rice Varieties in the Wuling Mountain Area in Western Hunan Province

Objective] The aim was to screen the new super rice varieties with high yield potential,strong resistance,better quality,suitable for demonstration and promotion in western Hunan Province.Method] The tested varieties were Yliangyou No.8 （bred by Hunan Province Hybrid Rice Research Center）,Shuang8SXR109 （bred by Hunan Province Hybrid Rice Research Center）,Shengliangyou 5814 （bred by Longgang Research Institute of Shenzhen,China National Hybrid Rice R＆ D Center）,Yliangyou No.7 （bred by Hunan Province Hybrid Rice Research Center）,Ylaingyou 9988 （bred by Chinese Seeds CO.,LTD）,Yliangyou 488 （bred by Chinese Seeds CO.,LTD）,Yliangyou 696（bred by Chinese Seeds CO.,LTD）,Yliangyou 2 （bred by Hunan Province Hybrid Rice Research Center,control）.The hybrid rice seedlings quality was observed and analyzed before transplanting,the tillering dynamics was investigated after transplanting regularly,the resistance was observed,every tested combination was sampled before harvesting and then their seed was observed and their yield was determined indoor.Result] The growth and development traits and comprehensive resistance of Yliangyou No.7,Shuang8SXR109,and Shenliangyou 5814 were good,and their yield increased very significantly compared with control,and their rice qualities were good,so they were suitable for cultivating as mediate maturity rice in one-cropping season in the region less than 500 m of the western Hunan Province.Conclusion] The study has an important significance for improving rice unit yield and guiding rice farmer to buy good quality seeds correctly.It is pay more attention to must complement good fertilization and water management to obtain high yield when two-line super hybrid rice cultivates in mountain region as mediate maturity rice in one-cropping season.