摘要
本文以金冠/M9/山定子6年生树体为试材,对树体结构参数进行田间测定,用多元回归、逐步回归的方法分析出十种树体结构指标对产量的效益,用边际分析的方法和聚类的方法研究出金冠/M9/山定子产量最高时树体结构参数为:干周=24.93cm,树高=2.5cm,平均冠径=3.01m,冠高=2.5m,树冠体积=5.0～5.6m^3,单株长枝数=101～161个,单株中枝数=122—142个,单株短枝数=601～616个,单株枝量=847～903个,单株叶面积=13.5m^2。
The progresive regressing and regressing were made on the fruit production
to the parameter of tree framework of gold delicion / M9 / Shandingzi in 6 years old based
on the date of yeild investigations and measurment. By the marginal analysis and fuzzy
clasification.These parameter were defined that trunk circumafename= 24.93cm, highth of
tree=2.5m,average width ot tree=2.5m,size of tree=5.05～5.6m^3, number of length
branch / per tree = 101-161.number of middle branch / per tree = 122-142,number of
shorten branch / per tree = 601-616,total number of branch = 847-903,square of
leaf=13.5m^2.
出处
《北京农学院学报》
1992年第2期5-10,共6页
Journal of Beijing University of Agriculture
关键词
苹果
回归
树体结构指标
apple
regress
parameter of tree framework
