摘要
[目的]了解长龄壮秧对超稀植杂交稻生长和产量的影响。[方法]设T1(30d)、T2(42d)T3(54d)3个秧龄处理,研究B优827、岗优725和D优527超稀植时的生长及产量情况。[结果]随着秧龄的延长,3个品种的最高分蘖期推迟。同一品种不同处理的单株最大茎蘖数无明显差异。岗优725的平均单株有效穗数为T1>T2>T3,其余两品种的为T2>T1>T3。3个品种T3处理的二次分蘖穗占总有效穗的比例下降,三次分蘖穗的比例增加。B优827和D优527的实收产量为T1>T2>T3,岗优725的为T2>T1>T3。不同品种对秧龄长短的反应有明显差异。[结论]秧龄对超稀植杂交稻的分蘖动态、有效穗及其组成、经济性状和产量都有一定的影响。在良好管理的基础上,合理选用品种,长龄壮秧超稀植杂交稻仍能保持高产水平。
[Objective] The purpose of the study was to know the influence of long age and strong seedling on the growth and yield of super rare-planted hybrid rice.[Method] 3 seedling age treatments of T1（30 d）,T2（42 d） and T3（54 d） were set up to study the growth and yield of Byou 827,Gangyou 725 and Dyou 527 when they were super rare-planted.[Result] The highest tillering stages of the 3 varieties were delayed along with the prolonging of seedling age.The maximum tiller numbers per plant of the same variety in different treatments had no obvious difference.The average available ear numbers per plant of Gangyou 725 were T1〉T2〉T3,and that of the other 2 varieties were T2〉T1〉T3.The proportion of secondary tillering ears to total available ears of the 3 varieties decreased and that of the third tillering ears increased in T3 treatment.The effective yields of Byou 827 and Dyou 527 were T1〉T2〉T3,and that of Gangyou725 was T2〉T1〉T3.The responses of different varieties to seedling age duration had obvious difference.[Concl
usion] Seedling age had some influences on tillering dynamic,available ear and its component,economic character and yield of super rare-planted hybrid rice.Based on well management,and choosing varieties reasonably,super rare-planted hybrid rice with long age and strong seedling could also keep high-yield level.
出处
《安徽农业科学》
CAS
北大核心
2007年第36期11796-11797,共2页
Journal of Anhui Agricultural Sciences
基金
国家"十一五"科技支撑计划重大项目(2006BAD02A05)
关键词
杂交水稻
长龄壮秧
超稀植
Hybrid rice
Long age and strong seedling
Super rare-planting
