【作者】 程述汉； 杨春燕； 魏钦平；

【Author】 Cheng Shuhan , Yang Chunyan & Wei Qinping (Shandong Agri. Univ., Tai’an , Shandong 271018)

【机构】 山东农业大学基础部； 山东农业大学园艺系；

【摘要】 通过对山东省丘陵新红星苹果高产稳产园的系统观测,应用多元统计分析,以产量为目标构造线性规划模型,并将约束常数视为可变参数,控制一定的产量范围逐步寻优,求解出亩产 4000-5000公斤时,新红星苹果园群体结构组配方案:叶面积系数=5．1763-5．9481,树冠体积 =370．2394-409．1117m3,叶幕覆盖率=57．3474-71．5929％,达标树比率=72．1702- 79．0852％。更多还原

【Abstract】 The continuous investigations (Four Years) were carried out on young starkrimson orchards in hilly land of Shandong province. Multiple statistical analysis were used to establish regression equation of affectiong output ablut population structures. The optimal population structure derived by using the linear programming and variance controlling is as follows: Leaf areas in-dex = 5. 1763-5. 9481,canopy volume = 370. 2394-409. 1117m3,leaf canopy cover ratio =57. 3474-71. 5929% , standard tree ratio =72. 7702-79. 08562%.更多还原