苹果园群体结构对产量品质影响的通径分析与优化方案

Study of Path Analysis and Optimal Scheme for Population Structure Factors Affecting Yield and Quality on Apple Orchards

应用通径分析方法研究果园群体结构对产量品质的影响,结果表明,覆盖率、树冠体积和单位面积枝量是影响产量的主要因素,树体高度、营养枝比例、枝量和新梢长度是影响果实品质的主要因素。多目标线性规划求出苹果园高产优质的群体结构优化组配方案为,覆盖率85％,树高3m,树冠体积1292m^3/666.7m^2。新梢长度43cm。666.7m^2枝量87678条,营养枝比例10％以下,短枝比例75％左右。

Many 'Rail' apple orchards were investigated in the main apple producing ares in Shandong province. The path analysis showed that canopy ratio? canopy volue and the amount of shoots were main affective factors on yield. The height of tree? nourishing shoot ratio amount of branches and shoot growing were main affective factors on quality of fruit. The optimal population structure derived by using the multi-objective lineer programming is as follows: canopy ratio = 85%, tree heigh = 3m, canopy volue = 1292m^3/666. 7m^2, shoot length = 43cm, amount of shoots = 87678/666. 7m^2, nourishing shoot ratio = 10% , spur ratio = 75%.