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Citation:

Study on the Conditioning Effects of Undercutting and Top-pruning on Slash Pine Bareroot Seedlings

  • Received Date: 1996-03-26
  • Bareroot slash pine seedlings were subjected to undercutting and top-pruning treatments including different executing time and frequency,to evaluate the effects on seedling morphology and field performance.The results showed that undercutting treatmens reduced seedling height and diameter,and improved root fibrosity,earlier and multiple ones had more pronounced effects,undercutted seedlings displayed better growth than the control and higher survival rate on dry or severely vegetation competitive sites.Top pruned seedlings were smaller,but there were no negative effects from top-pruning on field performance,the seedling uniformity were increased due to the small seedlings free of depression,but later top-pruning was harmful to seedling bud formation timely.The application principles of the treatments as cultural practices were proposed.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Study on the Conditioning Effects of Undercutting and Top-pruning on Slash Pine Bareroot Seedlings

  • 1. The Research Institute of Subtropical Forestry, CAF Fuyang, Zhejiang 311400
  • 2. Fengshushan Forest Farm, Jingdezheng, Jiangxi
  • 3. The Forestry Research Institute of Anhui
  • 4. Matou Forest Farm, Jingxian, Anhui

Abstract: Bareroot slash pine seedlings were subjected to undercutting and top-pruning treatments including different executing time and frequency,to evaluate the effects on seedling morphology and field performance.The results showed that undercutting treatmens reduced seedling height and diameter,and improved root fibrosity,earlier and multiple ones had more pronounced effects,undercutted seedlings displayed better growth than the control and higher survival rate on dry or severely vegetation competitive sites.Top pruned seedlings were smaller,but there were no negative effects from top-pruning on field performance,the seedling uniformity were increased due to the small seedlings free of depression,but later top-pruning was harmful to seedling bud formation timely.The application principles of the treatments as cultural practices were proposed.

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