紫花苜蓿群体冠层结构和产量性状的研究  

Study on Canopy Structure of Populations and Yield Characters in Alfalfa

作　　者：李源[1,2] 高洪文[1] 王赞[1] 孙桂枝[1] 

机构地区：[1]中国农业科学院北京畜牧兽医研究所,北京100193 [2]河北省农林科学院旱作农业研究所,河北衡水053000

出　　处：《华北农学报》2009年第B12期190-194,共5页Acta Agriculturae Boreali-Sinica

基　　金：公益性行业(农业)科研专项项目(nyhyzx07-022);"十一五"科技支撑项目(2007BAD56B01;2007BAD56B02)

摘　　要：采取播种量、播种方式及品种三因素正交设计为试验处理,分析不同栽培模式对紫花苜蓿冠层结构和产量的影响。结果表明,不同处理水平结构特征系数除消光系数差异不显著外,其他特征系数呈显著性差异,产量性状除株高差异不显著外,其他性状均呈显著性差异(P<0.05);相同处理不同冠层垂直结构特征系数不同,同一冠层不同处理茎重、叶重及总重呈显著性差异。以处理5(亮苜5号,条播,12.0 kg/hm2)和处理6(亮苜5号,撒播,22.5kg/hm2)下的冠层结构较理想,获得的产量较高。A field experiment was conducted to investigate the effect of sowing rates, sowing forms, and varieties on the canopy structure and yield in alfalfa. The results showed that there were significant differences in level structure characteristic coefficient except plant canopy extinction coefficient, and there were significant differences in yield characters except plant height. There were significant differences in vertical structure characteristic coefficient in the same treatments, and there were significant differences in stem weight, leaf weight, and total weight. From the viewpoints of canopy parameters, treatment 5 and treatment 6 were better than any other treatments and obtained higher yield in this study.

关 键 词：紫花苜蓿 栽培模式 冠层结构 产量性状 

分 类 号：S542[农业科学—作物学]