5种测量热带果树单叶面积的方法研究

Studies on Five Methods for Measuring Leaf Area of Some Tropical Fruit Trees

比较了采用5种方法测量的鸡心黄皮等14种热带果树的叶片面积。结果表明:除酸豆外,以不同方法测定的同一树种的叶面积结果之间,无显著差异;在以叶片长度、叶片宽度、叶片长度与宽度为变量的叶片面积回归方程中,以叶片长度与宽度为变量时的相关系数最大;经回归检验,回归方程法可以作为叶片面积的无损测量方法。

Five leaf -area -measuring methods were studied to get a method for continuous measuring of mature leaves of14tropical fruit trees such as wonpee,carambola,atemoya,jack fruit,star apple,guava and so on.The results showed that there was no significant difference between the leaf area values measured by different methods for the same kind of fruit tree with the excep tion of tamarind.Since its correlation coefficient was greatest,the regression equation whose in dependent variable was the product of leaf length and leaf width was better for estimating leaf area of every trial tree than the other two regression equations whose independent variables were leaf length,leaf width respectively.