半干旱地区水地紫花苜蓿鲜草产量与主要构成因素相互关系的回归与相关分析

Regression and correlation between alfalfa fresh yield and its main component factors in irrigated soils of semi-arid areas

应用多元回归与相关分析表明,苜蓿Madicagosativa鲜草产量与茎数、茎高存在着真实的回归关系,并成正相关,其中鲜草产量与茎数回归及相关关系极为显著。在鲜草产量保持一定水平时,茎数与茎高成负相关,且不显著。根据分析结果,建立了苜蓿鲜草产量与茎数、茎高的二元回归、相关数学模型并对其应用提出了相应对策。

Multiple regression and correlation indicated that, true regress relationship exists among alfalfa fresh yield, stem number and stem hight, it is positive correlation, regression and correlation between fresh yield and stem number are considerably significant.When fresh yield maintains a certain level, stem number and stem hight has a negative correlation but not significant. Based on analysis results, binary regression and correlation model between alfalfa fresh yield, stem number and stem hight were formed, relevant application measures were recommended.