寒地水稻品种的生育性状及产量稳定性分析

以2010～2012年示范和展示品种为材料,以各品种单位面积平均产量及其株高、有效穗数、每穗粒数、结实率、千粒重、穗长等6个产量性状的表型值为依据,通过三年平均产量比较试验,系统的阐述了不同熟期品种在二积温带的产量及产量性状表现。试验结果表明:与主栽品种空育131比较,2010～2012年平均产量较高的11片叶品种为龙粳29、垦粳2号、垦稻21、垦稻20、龙粳27、龙粳20、龙粳26;产量较稳定的品种为空育131、龙粳25、龙粳20、垦粳2号、龙粳29。12片叶品种年际间产量差异较显著,相对较稳定的品种为垦鉴稻6号、垦稻14、龙粳21,绥粳10、松粳10、北稻5号;与主栽品种垦稻12比较,三年平均产量较高的品种为垦粳4号、垦稻14、垦鉴稻6号、绥粳10、龙粳21。本地区适宜选择11片叶品种为主栽品种。

Growth Characteristics and Yield Stability of rice in Cold Area

The experiment of yield comparisons of rice varieties were conducted in 2010-2012 according to plant height,effective panicle umber,grain number per panicle,seed setting rate,1000-grain weight and panicle length for explaining expression of rice varieties with different growth period in second accumulated temperature zone.The results showed that compared with Kongyu131,high-yield varieties containing 11 leaves were Longjing29,Kenjing2,Kendao21,Kendao20,Longjing27,Longjing20,and Longjing26,stable-yield varieties were Kongyu131,Longjing25,Longjing25,Longjing20,Kenjing2 and longjing29.Yield differences were significant in rice varieties containing 12 leaves between years and stable-yield varieties were Kenjiandao6,Kendao14,Longjing21,Suijin10,Songjing10 and Beidao5.Compared with Kendao12,high mean yield included Kenjing4,Kengdao14,Kenjiandao6,Suijing10 and Longjing21.rice varieties containing 11 leaves were suitable for production in this area.