One growing season after the harvest of a 16-year-old hybrid poplar (Populus sp.) plantation, sprouts from 100 clumps were thinned to retain the dominant sprout; 100 clumps were left for comparison. After three growing seasons, thinned and unthinned clumps did not differ in total number of sprouts per clump or in diameter of dominant sprouts. Dominant sprouts were significantly taller in the unthinned clumps. Thinning hybrid poplar sprout clumps after a harvest is not recommended.

中文翻译：

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杂交杨树芽丛：间伐并不能改善发育

一棵 16 年生的杂交杨 (Populus sp.) 种植园收获后的一个生长季节，对 100 个丛中的芽进行间伐，以保留优势芽；留下 100 个团块进行比较。经过三个生长季节后，稀疏和未稀疏的丛在每丛的芽总数或优势芽的直径上没有差异。在未稀疏的丛中，优势芽明显更高。不建议在收获后对杂交杨树芽丛进行间伐。