超迟夏直播杂交水稻产量及产量性状的相关性
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摘要
为川东北油菜(或小麦)收获后杂交水稻超迟直播品种的选用和合理栽培技术措施的制定提供理论依据,对46个杂交水稻品种进行油菜(或小麦)收获后超迟夏直播试验,利用相关和通径方法分析各品种的产量性状及其相关性。结果表明,超迟夏直播条件下,46个杂交水稻品种产量在510.7～730.7kg/667m2,平均产量644.1kg/667m2;产量与有效穗、着粒数、实粒数、千粒重呈正相关,与结实率呈负相关,其中产量与着粒数、实粒数、实粒重呈极显著正相关;各产量性状对水稻产量直接作用由大到小依次为:实粒数>千粒重>有效穗>结实率。超迟夏直播条件下应选用实粒数和千粒重较高的水稻品种;内2优111、泸香优177、蓉优918和蓉18优198等4个品种产量表现较高,可作为川东北油菜(或小麦)收获后杂交水稻超迟直播品种的优先选择。
The yield traits and their correlations of 46 hybrid rice varieties were studied by correlation and path analysis to provide the theoretical basis for selection of hybrid rice varieties and formulation of rational cultivation technological measures under late summer direct sowing pattern after harvesting rape or wheat in East Sichuan.Result:The yield and average yield of 46 tested hybrid rice varieties is 510.7-730.7 kg/667 m2 and 644.1 kg/667 m2 under late summer direct sowing pattern after harvesting rape or wheat respectively.The yield is positively related to effective panicles,grain number,1 000-grain weight and filled grain number and negatively related to setting percentage.The yield is positively related to grain number,1 000-grain weight and filled grain number very significantly.The direct effect of four yield traits on rice yield is filled grain number>1 000-grain weight>effective panicles>setting percentage.The hybrid rice varieties with high filled grain number and 1000-grain weight should be selected as the suitable varieties for cultivation under late summer direct sowing pattern.Four hybrid rice varieties of Nei2 you 111,Luxiangyou 177,Rongyou 918 and Rong 18 you198 with good yield performance can be preferentially selected for cultivation under late summer direct sowing pattern after harvesting rape or wheat in East Sichuan.
The yield traits and their correlations of 46 hybrid rice varieties were studied by correlation and path analysis to provide the theoretical basis for selection of hybrid rice varieties and formulation of rational cultivation technological measures under late summer direct sowing pattern after harvesting rape or wheat in East Sichuan.Result:The yield and average yield of 46 tested hybrid rice varieties is 510.7-730.7 kg/667 m2 and 644.1 kg/667 m2 under late summer direct sowing pattern after harvesting rape or wheat respectively.The yield is positively related to effective panicles,grain number,1 000-grain weight and filled grain number and negatively related to setting percentage.The yield is positively related to grain number,1 000-grain weight and filled grain number very significantly.The direct effect of four yield traits on rice yield is filled grain number>1 000-grain weight>effective panicles>setting percentage.The hybrid rice varieties with high filled grain number and 1000-grain weight should be selected as the suitable varieties for cultivation under late summer direct sowing pattern.Four hybrid rice varieties of Nei2 you 111,Luxiangyou 177,Rongyou 918 and Rong 18 you198 with good yield performance can be preferentially selected for cultivation under late summer direct sowing pattern after harvesting rape or wheat in East Sichuan.
引文
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[10]林琼.播期和密度对超级稻天优3301产量形成的影响[J].福建农业学报,2012(7):685-690.
[2]陈风波,陈培勇.中国南方部分地区水稻直播采用现状及经济效益评价---来自农户的调查分析[J].中国稻米,2011(4):1-5.
[3]王洋,张祖立,张亚双,等.国内外水稻直播种植发展概况[J].农机化研究,2007(1):48-50.
[4]张荣萍,陶诗顺,胥伟秋,等.油后直播杂交稻上3叶性状与单穗粒质量的相关和通径分析[J].江苏农业科学,2018,46(5):72-75.
[5]姜磊,陶诗顺.播期对油后直播杂交稻产量及其性状的影响[J].广东农业科学,2014(13):1-5.
[6]刘丽华,王新兵,汤凤兰,等.水稻产量及产量构成的稳定性和高产相关性分析[J].干旱地区农业研究,2013,31(5):84-88,94.
[7]杜斌,陈留根,赵田芬,等.直播播期对不同类型水稻品种生育期及产量形成的影响[J].湖南农业科学,2012(46):18-21
[8]刘蓉,陶诗顺,鲁有均.油后旱地直播时期对杂交水稻生育进程的影响[J].江苏农业科学,2012(2):39-41.
[9]王兆铨.优质稻新品种泰丰优2098特征特性及栽培技术[J].福建稻麦科技,2012,30(4):51-53.
[10]林琼.播期和密度对超级稻天优3301产量形成的影响[J].福建农业学报,2012(7):685-690.