剪顶
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Top-pruning 截顶
top pruning time 打顶时间
top pruning for afforestation 剪顶造林
Root pruning & Top removal 断根摘芯
While the treatment of no top pruning, potassium transferred from leaf to stem and root, reduced the potassium content in leaf.3.
而不打顶的处理，钾素从叶部向茎部及根部转移，降低了烟叶中含钾量。
·2,447,543篇论文数据，部分数据来源于NoteExpress
When the top of the main shoot is removed by pruning or breakage the auxin is no long produced.
VOA: special.2009.10.06
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