作物研究
作物研究
작물연구
Crop Research
2015年
5期
463-467
,共5页
水稻%产量%产量构成
水稻%產量%產量構成
수도%산량%산량구성
rice%yield%yield components
以湖南省2004～2011年（2007年除外）共7年中稻区试的120个中籼稻品种（中熟组31个，迟熟组89个）试验数据为材料，研究分析了产量与产量构成因素之间的关系。结果表明，中稻产量的变化趋势与穗实粒数有密切的正向关系；中熟组在保持适宜穗数的基础上通过扩充源库，同时增加粒重和穗粒数可以达到增产目的；迟熟组通过适当减少穗数，提高粒重或增加穗粒数可以达到增产目的。通过多元回归分析建立的中稻产量结构模型可知：中稻中熟组、迟熟组每增加1单位（万穗）有效穗，产量分别增加21.681、17.124 kg／hm2，每增加1单位（g）千粒重，产量分别增加175.669、169.675 kg／hm2，每增加1单位（％）结实率，产量分别增加173.66、63.347 kg／hm2，每增加1单位（粒）穗颖花数，产量分别增加28.16、35.713 kg／hm2。
以湖南省2004～2011年（2007年除外）共7年中稻區試的120箇中秈稻品種（中熟組31箇，遲熟組89箇）試驗數據為材料，研究分析瞭產量與產量構成因素之間的關繫。結果錶明，中稻產量的變化趨勢與穗實粒數有密切的正嚮關繫；中熟組在保持適宜穗數的基礎上通過擴充源庫，同時增加粒重和穗粒數可以達到增產目的；遲熟組通過適噹減少穗數，提高粒重或增加穗粒數可以達到增產目的。通過多元迴歸分析建立的中稻產量結構模型可知：中稻中熟組、遲熟組每增加1單位（萬穗）有效穗，產量分彆增加21.681、17.124 kg／hm2，每增加1單位（g）韆粒重，產量分彆增加175.669、169.675 kg／hm2，每增加1單位（％）結實率，產量分彆增加173.66、63.347 kg／hm2，每增加1單位（粒）穗穎花數，產量分彆增加28.16、35.713 kg／hm2。
이호남성2004～2011년（2007년제외）공7년중도구시적120개중선도품충（중숙조31개，지숙조89개）시험수거위재료，연구분석료산량여산량구성인소지간적관계。결과표명，중도산량적변화추세여수실립수유밀절적정향관계；중숙조재보지괄의수수적기출상통과확충원고，동시증가립중화수립수가이체도증산목적；지숙조통과괄당감소수수，제고립중혹증가수립수가이체도증산목적。통과다원회귀분석건립적중도산량결구모형가지：중도중숙조、지숙조매증가1단위（만수）유효수，산량분별증가21.681、17.124 kg／hm2，매증가1단위（g）천립중，산량분별증가175.669、169.675 kg／hm2，매증가1단위（％）결실솔，산량분별증가173.66、63.347 kg／hm2，매증가1단위（립）수영화수，산량분별증가28.16、35.713 kg／hm2。
120 middle -season indica rice varieties (31 belong to medium maturity group,89 belong to late maturing group)came from regional test of middle -season rice in 2004 ~2011were chosen to study the relationships between yield components and yield.The results showed that:The change trend of yield had close relation with filled grain number.To maintain appropriate number of effective panicles and increase grain weight and grain number per spike could achieve the purpose of increasing yield in medium maturity group.To properly reduce the number of effective panicles,increase grain weight or increase grain number could reach the goal of increasing yield in late maturing group.Looked from the yield structure model established by multiple regression analysis,the grain yield of medium maturity group and late maturing group would increased by 21.681 kg/hm2 and 17.124 kg/hm2 when the ear number was increased by 10 000 panicles,the grain yield would increased by 175.669 kg/hm2 and 169.675 kg/hm2 when the grain weight was increased by 1 g,and the grain yield would increased 173.66 kg/hm2 and 63.347 kg/hm2 when the seed setting rate was increased by 1%,and the grain yield would increased by 28.16 kg/hm2 and 35.713 kg/hm2 when the number of spikelets was increased by 1 per panicle.
