青海柴达木灌区春小麦增产途径分析  

Analysis of Productivity Performance of High- Yield Spring Wheat and Approaches to Increase Grain Yield and Approaches to Increase Grain Yield in Irrigated Qaidam Basin of Qinghai

作　　者：姚有华[1] 谢德庆[1] 叶景秀[1] 

机构地区：[1]青海省农林科学院,青海西宁810016

出　　处：《青海农林科技》2016年第1期1-6,共6页Science and Technology of Qinghai Agriculture and Forestry

摘　　要：青海柴达木灌区是我国春小麦的典型高产区，针对近年来在该地区实现小麦产量突破难度不断增加和产量挖潜途径不明确的现实问题，通过对高产创建田3年18点次高产（830kg／666.7m＾2及以上）群体产量构成因素分析的基础上，探讨不同播量（密度）水平下高产（830kg／666．7m＾2及以上）群体的产量性能，以便明确实现产量突破的途径和产量挖潜的主攻方向。结果表明，在青海柴达木灌区，决定高产群体产量的主要因素为穗数和千粒重，能稳定实现产量在830kg／666.7m＾2以上的合理群体产量结构为穗数47．1～50．7万，穗粒数38．2～40．5粒．千粒重44．4—48．2g。Irrigated Qaidam Basin is a typical high production area for spring wheat in China. It is difficult to increase grain yield （ above 830kg/666.7m^2 ） because of unclearness in exploring the productivity potential of high- yield spring wheat colony. To solve this problem, we analyzed the yield components, the yield performanee parameters, and the effects of plant density on yield performance of different hybrids in split plot designs for 18 high yield wheat colonies in three years. The result showed that ear number andl grain number per ear were the main factors affecting the yield of wheat colony （above830kg/666.7m^2） in i irrigated Qaidam Ba- sin of Qinghai. The yield components of high yield colonies （ above 830kg/666.7m^2 ） were! as follows ：47.1 - 50. 7 ears per hectare,44.4-48.2g per 1000 -grain and 38.2 -40. 5 per ear.

关 键 词：春小麦 高产群体 产量性能 定量分析 

分 类 号：S512[农业科学—作物学]