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中国农学通报 ›› 2016, Vol. 32 ›› Issue (31): 102-107.doi: 10.11924/j.issn.1000-6850.casb16030087

• 林学 园艺 园林 • 上一篇    下一篇

玛咖主要农艺性状与块根鲜重的相关和通径分析

苏泽春,和桂青,赵菊,王泽清,李兆光,薛润光   

  1. 云南省农业科学院高山经济植物研究所,云南省农业科学院高山经济植物研究所,云南省农业科学院高山经济植物研究所,云南省农业科学院高山经济植物研究所,云南省农业科学院高山经济植物研究所,云南省农业科学院高山经济植物研究所
  • 收稿日期:2016-03-11 修回日期:2016-04-21 接受日期:2016-05-29 出版日期:2016-11-10 发布日期:2016-11-10
  • 通讯作者: 薛润光
  • 基金资助:
    云南省科技创新强省计划“丽江玛咖产业发展共性关键技术研究与示范推广”(2015AB002);中央财政农业综合开发存量资金土地治理项 目“2014 年玉龙县宝山乡玛咖标准化种植省级示范项目”(丽财农综[2014]10 号)。

Correlation and Path Analysis Between Main Agronomic Characters and Fresh Root Weight of Lepidium meyenii

  • Received:2016-03-11 Revised:2016-04-21 Accepted:2016-05-29 Online:2016-11-10 Published:2016-11-10

摘要: 为探明云南玛咖产根鲜重与主要农艺性状之间的关系,给玛咖高产栽培提供参考,以同一株系在11 个区域内的田间表现为研究对象,对各农艺性状与块根鲜重进行相关分析、逐步回归和通径分析。结果表明,根鲜重(y)与覆盖面积(x1)、茎粗(x2)、膨大根粗(x4)和叶宽(x12)呈极显著正相关关系;建立的最佳回归方程为:y=-24.584 0.003x1-10.313x2 18.011x4-0.738x5-0.957x6 0.964x7 1.192x10-1.803x11 9.14x12;膨大根粗、叶宽、覆盖面积、根数和叶柄长对根鲜重有正的通径系数,对根鲜重直接正效应,主根长、叶长、茎粗和膨大根长对根鲜重有负的通径系数,对根鲜重有直接负效应。在栽培管理过程中,以实现根鲜重增加的目的,地下部分应着力培植膨大根粗,地上部分应促成叶宽生长。

关键词: 玉米, 玉米, 叶面积指数, 地上生物量, 遥感反演

Abstract: In order to reveal the relationship between Lepidium meyenii root weight and main agronomic characters, and provide references for high yield cultivation of Lepidium meyenii, field performance of the same strain in 11 regions was studied through the methods of correlation, regression balance and path coefficient analysis. The results showed that fresh root weight (y) and coverage area (x1), stem diameter (x2), enlargement coarse (x4) and broad leaves (x12) were highly and significantly correlated. The optimal regression equation was y=- 24.584 0.003x1- 10.313x2 18.011x4- 0.738x5- 0.957x6 0.964x7 1.192x10- 1.803x11 9.14x12. The enlargement root thickness, broad leaves, coverage area, root number and petiole length had positive path coefficients for the fresh root weight. Main root length, leaf length, stem diameter and enlargement root length had negative path coefficients for the fresh root weight. In the cultivation and management process, to realize the increase of root fresh weight, the cultivation should be focused on the enlargement root thickness of the underground part and the leaf width of the aboveground part.