CAJ | 학술논문

为研究三倍体毛白杨幼龄林生长量与叶片养分含量的相关性,在造林后的4 a中,每年均在秋季时测量生长量并采集叶样测定叶片养分的含量.通过对所得数据进行相关分析得出,胸径和树高均与叶片的N、P、K、Ca、Fe、Cu和Zn含量呈正相关,与叶片N∶P比值呈负相关.进行回归分析后比较回归系数的大小得出,叶片的P和Ca含量对林木生长有影响作用.
위연구삼배체모백양유령림생장량여협편양분함량적상관성,재조림후적4 a중,매년균재추계시측량생장량병채집협양측정협편양분적함량.통과대소득수거진행상관분석득출,흉경화수고균여협편적N、P、K、Ca、Fe、Cu화Zn함량정정상관,여협편N∶P비치정부상관.진행회귀분석후비교회귀계수적대소득출,협편적P화Ca함량대림목생장유영향작용.
In order to study the relationship between foliar nutrient contents and the growth of triploid Populus tomentosa plantations, DBH (diameter at breast height) and H (height) were recorded and leaf samples were collected in each autumn for four years since 2005 and to measure the nutrient contents. The results shawed that DBH was positively correlated with nutrient contents of N, Regression results showed that DBH and H both greatly influenced by foliar P, and Ca contents.