穴苗数对龙粳31穗部性状及稻谷产量的影响  

Effect of Tillers per Hole on Panicle Traits and Paddy Production of Longjing-31

作　　者：张丽微[1] 钱永德[1] 仲维君 王龙[1] 宋泽[1] 郑黄岩 

机构地区：[1]黑龙江八一农垦大学农学院,黑龙江大庆163319

出　　处：《北方水稻》2016年第2期16-19,23,共5页North Rice

摘　　要：试验以龙粳31为材料,每穴苗数为处理,完全随机设计,探讨穴苗数对龙粳31穗部性状及稻谷产量的影响。结果表明:随穴苗数的增加,稻谷的穗部一次枝梗数呈减少的趋势,穗部二次枝梗数以处理2(3苗/穴)最多,优中劣势粒结实率呈先下降后上升的趋势,单穗重、每穗粒数均以处理1(1苗/穴)最多,但穴苗数的多少对穗长影响不大;而单位面积穗数以处理5(9苗/穴)最高,结实率随穴苗数的增加呈先下降后上升的趋势,千粒重随穴苗数增加呈下降趋势。穴苗数为7株处理稻谷产量达到最高,为10 765.0 kg/hm^2。The test using Longjing-31 as experimental material and the seedling number each hole as treatment with a complete randomized design, to discuss the effect of tillers per hole on panicle traits and paddy production of Longjing- 31. The result indicated that primary raehis branch number showed a descent tendency along with increasing of the seedling number each hole, t.he most secondary branch grain number was treatment 2 （3 seedlings/hole）, the fruiting rate of superior grain, medium grain and inferior grain was firstly decreased but increased at last, single spike weight and grain number per spike were most on treatment 1（1 seedling/hole）, but the seedling number each hole had little effect on panicle length; spike number per unit area was most on treatment 5 （9 seedlings/hole）, fruiting rate was firstly decreased but increased at last along with the increasing of the seedling number, thousand seed weight showed a descent tendency along with increasing of the seedling number each hole. The treatment which the seedling number each hole was 7 can achieve the highest yield with 10 765.0 kg/hm2.

关 键 词：水稻 穴苗数 穗部性状 产量 

分 类 号：S511.04[农业科学—作物学]