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我们在实际工作中,根据甘薯单株叶重与叶面积系数之间的高度相关性,通过169对数据的统计分析,摸索出一种快速测定甘薯叶面积系数的新方法,所得结果与实际叶面积系数很接近,我们称之为“直接称重法”。具体做法是:从待测田块中随机取样10株,将全部绿叶摘下(不包括叶柄)称重,并求出单株叶重(克),参照下表的时间范围,分别代入以下三个经验公式中的一式,即可求出不同时期的甘薯叶面积系数。
In the actual work, according to the high correlation between leaf weight per unit leaf area and leaf area coefficient of sweet potato, through a statistical analysis of 169 pairs of data, a new method for rapid determination of leaf area coefficient of sweet potato was worked out. The area factor is very close to what we call the “direct weighing method.” The specific approach is: 10 randomly selected from the plots to be measured, all the green leaves (excluding petiole) weighing, and calculate the leaf weight per plant (g), with reference to the time frame below, were substituted into the following three A formula of empirical formula, you can find different periods of sweet potato leaf area coefficient.