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用收获法研究了PR107、RRIM600两个无性系距芽接位1.5米处的茎围与该株树的最大直径、叶面积、根系以及茎枝干物质之间的相互关系,同时测量了不同大小植株上不同木质器官的粗度分布。结果表明:1.5米处的茎围与该株树的最大直径,叶面积以及根系和茎枝的干物重之间有密切相关,可以根据茎围值的大小,相当满意地把每株树的最大直径、叶面积以及根和茎枝的干物重估算出来。文中分别品系给出了它们之间的回归方程式。一株树上木质器官的粗度分布可用以下幂函数式来表示,即: f=△KD~(-α) 指数α值虽随品系和器官的不同而不同,但并不因植株的大小而异,因此,对于各种粗度的植株均可用同一α值来估计。确定了PR107、RRIM600两无性系茎枝和根系的α值,它们分别是2.15和1.852(PRl07),2.31和1.80(RRIM600)。
The harvesting method was used to study the relationship between the stem diameter at 1.5 m and the maximum diameter, leaf area, root system and stem and branch dry matter of two clones of PR107 and RRIM600. Rough distribution of different woody organs. The results showed that there was a close correlation between the stem diameter at 1.5 m and the maximum diameter of the tree, the leaf area and the dry weight of roots and stems. According to the size of the stems, Diameter, leaf area, and dry weight of roots and stems were estimated. The article separately gives the regression equation between them. The thickness distribution of woody organs in a tree can be expressed by the following power function, that is: f = △ KD ~ (-α) Although the value of α varies with strains and organs, it does not depend on plant size Therefore, the same α value can be estimated for all kinds of plants with different roughness. The α values of the stems and roots of both PR107 and RRIM600 clones were determined, and they were 2.15 and 1.852 (PRl07), 2.31 and 1.80 (RRIM600), respectively.