南宁市早稻超级稻品比试验

Comparison test on super rice varieties in early rice of Nanning City

[目的]对14个超级稻品种进行试种,筛选适宜南宁市早稻种植的产量高、熟期适宜的超级稻品种,为南宁市超级稻的推广种植提供科学依据.[方法]以Y两优1号为对照,对14个参试超级稻品种的生育期、农艺性状、经济性状和产量进行比较分析.[结果]参试超级稻品种生育期为115～136d,以中浙优1号最长（136 d）、丰源优299最短（115d）.不同超级稻品种株高、穗长分别与对照相差-10.1～7.4、0.1～3.0 cm,均以丰源优299最高.除天优122、天优998和中浙优1号有效穗高于对照外,其他参试品种有效穗（236.40万～287.85万穗/ha）均低于对照（300.75万穗/ha）.丰源优299、Ⅱ优航2号、五优308等9个品种的平均每穗总粒数（152～181粒）均高于对照.桂两优2号、特优582、天优998等9个品种的结实率（78.21％～89.26％）均高于对照.准两优1141、天优3301、丰源优299等5个品种的千粒重高于对照,增幅为1.4～5.9g.参试品种中有7个品种比对照增产,增产幅度为1.5％～9.9％,其中准两优1141、Ⅱ优602、内2优6号、特优582等4个品种比对照增产3.4％以上;其余品种比对照减产,减产幅度为3.5％～10.9％.[结论]准两优1141、Ⅱ优602、内2优6号、特优582等7个品种的产量潜力高、熟期适宜,可作为南宁市早稻主推品种,其余品种可因地制宜推广种植.

[Objective]The introduced 14 super rice varieties were planted to screen high-yield and suitable maturity super rice variety planting in Nanning Cry in order to provide references on extension and planting of super rice in Nanning Cry.[Method]By using Y Liangyou 1 as control,the duration,agronomic traits and yield of 14 tested super rice varieties were analyzed.[Result]The duration of tested varieties ranged from 115 to 136 days,and that of Zhongzheyou was the longest and Fengyuanyou 299 was the shortest.As compared with the control,the plant height and panicle length of different super rice varieties differed-10.1 to 7.4 cm and 0.1 to 3.0 cm,respectively.And that of Fengyuanyou 299 was the highest.Except for Tianyou 122,Tianyou 998 and Zhongzheyou 1,the other tested varieties showed lower effective panicles （236.40×104-287.85× 104 panicles/ha） as compared with the control.The average total grains per panicle （152-181 grains） of nine varieties viz.,Fengyuanyou 299,Ⅱ Youhang 2,Wuyou 308,etc.were higher than that of control.The seed setting rate （78.21％-89.26％） of Guiliangyou 2,Teyou 582,and Tianyou 998,etc.were higher than that of control.The 1000-grain weight of five varieties viz.,Zhunliangyou 1141,Tianyou 3301 and Fengyuanyou 299,etc increased 1.4-5.9 g as compared with that of control.The yield of seven varieties increased by 1.5％-9.9％,and that of Zhunliangyou 1141,Ⅱ You 602,Nei-2-you 6 and Teyou 582 showed over 3.4％ of increment.The yield of other varieties decreased by 3.5％-10.9％ as compared with the control.[Conclusion]Zhunliangyou 1141,Ⅱ You 602,Nei-2-you 6 and Teyou 582 presented high yield and suitable maturity and could be used as extending super rice varieties planting in early rice of Nanning Cry,and the other varieties could be planted according to local conditions.