不同年份下播种密度对扬麦13群体动态和产量性状的影响  

Effects of Planting Density on Group Dynamics and Yield Traits of Yangmai 13 in Different Years

作　　者：张晓[1] 江伟[1] 李曼[1] 

机构地区：[1]江苏里下河地区农业科学研究所/农业部长江中下游小麦生物学与遗传育种重点实验室,江苏扬州225007

出　　处：《金陵科技学院学报》2017年第1期60-63,共4页Journal of Jinling Institute of Technology

基　　金：江苏省科技支撑计划项目(BE2014351);江苏省农业科技自主创新资金[CX(14)2002];扬州市科技计划项目(YZ2014167)

摘　　要：密度对小麦生长发育及产量形成起着关键性的作用。试验设置了180、210、240、270万株·公顷-2 4个播种密度,探讨了不同播种密度对扬麦13群体动态和产量性状的影响。结果表明:扬麦13群体调节能力较强,不同播种密度下产量无显著差异,但扬麦13株型紧凑,需适当密植,播种密度保持在240万株·公顷-2左右最为适宜,产量最高。此外,扬麦13的穗数与千粒重年际间变化显著,但穗粒数在年际间无显著变化。Density plays important role in the cultivation of wheat, and the wheat growth and yield formation. This experiment set up 1.8, 2.1, 2.4, 2.7 million hm-2 four planting density, and discusses the different planting density on Yangmai 13 wheat group dynamics and yield trait. Results show that under different planting density, Yangmai 13 groups adjustment abili- ty is stronger, so as to make the late production no bigger difference, but it is also concluded that the optimum planting density, namely under the planting density of 2.4 million hm-2 , Yangmai 13 reached the highest yield. The experiment also indicates that there are significant changes between the spike number and thousand-grain weight in different years, but there are also no significant changes between the grain number per spike of different year.

关 键 词：扬麦13 密度 群体动态 产量性状 

分 类 号：S512.1[农业科学—作物学] S352.3