有效积温对中华常春藤叶片生长和衰老的影响

通过测定中华常春藤叶片生长期和衰老期的叶长、叶宽、叶面积和有效积温,建立叶片生长和衰老过程的回归方程,并根据方程绘制出对应曲线。经分析发现中华常春藤叶片的叶长优先伸长,并且叶长比叶宽先达到生长最大值,而最大叶长小于最大叶宽;叶片枯萎率随有效积温延续的变化呈J形曲线,而叶片衰老速度变化趋于钟罩型单峰曲线。

The Effects of Effective Accumulation Temperature on Growth and Senescence of Hedera Nepalensis Var.Sinensis's Leaf

During the growth and senescence period of the hedera nepalensis var.sinensis's Leaf,measuring the leaf length,leaf width,single leaf area and effective accumulation temperature,the growth and senescence regressive equation were set up,and then the curves were drawn on the basis of them.The results indicated that the leaf length which grows first achieves maximum value earlier than the leaf width,but the maximum value of the leaf length is less than the leaf width.The senescence rate to the effective accumu...