桑树叶片大小与质量的相关性

Regression analysis of Morus alba leaf size and its mass

为探讨影响桑树(Morus alba L.)叶片净质量的主要因素,2017—2018年以农桑14号为试材,在生长季调查叶片长度、叶片宽度、叶柄长度、叶柄宽横径、叶柄厚横径、叶柄质量、叶片质量、千克叶片数量、叶片净质量等指标,分析了桑树叶片性状的关系。结果表明,叶片长度、叶片宽度与叶片净质量呈高度正相关,叶柄长度、叶柄宽横径、叶柄厚横径与叶片净质量呈显著正相关;叶片长度、叶片宽度、叶片长度+叶片宽度、叶片长度×叶片宽度、叶柄长度、叶柄宽横径、叶柄厚横径、叶柄质量、叶片质量、千克叶片数量与叶片净质量的相关系数之间存在极显著差异(P<0.01);比较叶片长度等分别与叶片净质量形成的二次曲线方程和直线方程的相关系数,表明更符合二次曲线;各指标对叶片净质量的影响程度大小顺序为叶片质量、每千克叶片数量、叶片宽度、叶片长度、叶柄质量、叶柄厚横径、叶柄宽横径、叶柄长度。可以通过调查叶片宽度和叶片长度等指标进行桑园估产。

In order to explore the main factors affecting the net quality of mulberry(Morrus alba L.)leaves,from 2017 to 2018,Nongsang 14 was used as a test material,the leaf length,leaf width,petiole length,petiole width and transverse diameter,petiole thickness and transverse diameter,petiole mass,leaf mass,number of kilogram leaves,and leaf net mass were investigated in the growing season to analyze the relationship of mulberry leaf characteristics.The results show that there is a highly positive correlation between leaf length and leaf width and leaf net mass.The petiole length,petiole width and transverse diameter,and petiole thickness and transverse diameter are significantly positively related to the leaf net mass.There are extremely significant differences between the correlation coefficient of leaf length,leaf width,leaf length+leaf width,leaf length×leaf width,petiole length,petiole width and transverse diameter,petiole thickness and transverse diameter,petiole mass,leaf mass,kilo leaf quantity and leaf net mass.Comparing the correlation coefficients of the quadratic curve equation and the straight line equation formed by the blade length and the net mass of the blade,respectively,it shows that it is more in line with the quadratic curve.The order of influence of each index on the leaf net quality is leaf mass,leaf number per kilogram,leaf width,leaf length,petiole mass,petiole thickness and transverse diameter,petiole width and transverse diameter,and petiole length.Mulberry orchard yield can be estimated by investigating indicators such as leaf width and leaf length.