基于通径分析的枣树发芽率影响因子研究  

Study on Factors of Jujube Germination Rate Based on Path Anylysis

作　　者：南娟[1] 汪有科[1,2] 李晓彬[2,3] 马婧[1] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [2]中国科学院水利部水土保持研究所节水中心,陕西杨凌712100 [3]中国科学院教育部水土保持与生态环境研究中心,北京100049

出　　处：《北方园艺》2010年第20期10-13,共4页Northern Horticulture

基　　金：国家科技支撑计划资助项目(2007BAD88B05)

摘　　要：发芽率是枣树萌芽展叶期的一个主要指标。该试验调查显示,发芽率最高是干旱阳坡为93.75%,最低是灌溉阴坡为0。各个因素对发芽率的影响程度大小是不同的,经通径分析得出各因素直接作用的顺序为:土壤水分>不确定性因子>坡向>坡度>高程。土壤水分及不确定性因子如交错带等对枣树发芽率的直接作用最大,即影响程度最大,高程、坡向及坡度是通过土壤水分及不确定因素间接影响枣树发芽率。而决策系数的大小为:土壤水分>不确定性因子>高程>坡度>坡向。为了解决简单相关性的局限性,该试验将通径分析应用于数据分析中,更能全面的研究各个因素之间的关系及对发芽率的影响。The germination rate is a mainly index in the jujube sprout leaves period.It was reporated that the highest germination rate was drought in sunny,it was 93.75%,the lowest was irrigation in cloudy,it was 0.Various factors had different influence on the germination rate,and by path analysis.The order of direct impacts on the germination rate was soil moistureuncertainty factorsslope gradientelevationslope aspect.Soil moisture and uncertainty factors（such as soon crisscross of germination） were the main factors that showed impacts on the rate of germination,and others factors showed indirect impacts on the germination rate.And the sequence of decision coefficience：soil moistureuncertainty factorselevationslope aspectslope gradient.In order to solve the limitations of simple correlation,the path analysis,in this paper,will be applied in the analysis of dates.

关 键 词：枣树 通径分析 发芽率 影响因子 

分 类 号：S665.1[农业科学—果树学]