采用“V”字形下降式采脂法,割脂频率为1 d 1次。设置不同侧沟深度(伤及木质部2~3 mm和仅伤及韧皮部)和不同刺激剂(刺激剂D和刺激剂J)的组合处理。结果表明:不同侧沟深度对产脂量和树脂道数量均无显著影响;同一侧沟深度处理下,刺激剂D...采用“V”字形下降式采脂法,割脂频率为1 d 1次。设置不同侧沟深度(伤及木质部2~3 mm和仅伤及韧皮部)和不同刺激剂(刺激剂D和刺激剂J)的组合处理。结果表明:不同侧沟深度对产脂量和树脂道数量均无显著影响;同一侧沟深度处理下,刺激剂D和刺激剂J处理能显著增加产脂量,尤其是刺激剂J对仅伤及韧皮部的处理增脂效果最佳,增脂率达27%;添加刺激剂均能显著促进新生树脂道数量的增加,增长率在257%~398%;添加刺激剂处理能促进树脂道数量增加,但单个树脂道面积会减小。展开更多
The grading of Pinus kesiya var. langbianensis container seedling was studied by using stepwise cluster analysis. Height and base diameter were proposed as the quality indexes for grading, the criteria for class Ⅰ, ...The grading of Pinus kesiya var. langbianensis container seedling was studied by using stepwise cluster analysis. Height and base diameter were proposed as the quality indexes for grading, the criteria for class Ⅰ, Ⅱand Ⅲ were height≥18.5 cm, base diameter≥0.29cm, 18.5 cm>height≥15.5 cm, 0.29 cm>base diameter≥0.24 cm, and height<15.5 cm, base diameter<0.24 cm respectively.展开更多
文摘采用“V”字形下降式采脂法,割脂频率为1 d 1次。设置不同侧沟深度(伤及木质部2~3 mm和仅伤及韧皮部)和不同刺激剂(刺激剂D和刺激剂J)的组合处理。结果表明:不同侧沟深度对产脂量和树脂道数量均无显著影响;同一侧沟深度处理下,刺激剂D和刺激剂J处理能显著增加产脂量,尤其是刺激剂J对仅伤及韧皮部的处理增脂效果最佳,增脂率达27%;添加刺激剂均能显著促进新生树脂道数量的增加,增长率在257%~398%;添加刺激剂处理能促进树脂道数量增加,但单个树脂道面积会减小。
文摘The grading of Pinus kesiya var. langbianensis container seedling was studied by using stepwise cluster analysis. Height and base diameter were proposed as the quality indexes for grading, the criteria for class Ⅰ, Ⅱand Ⅲ were height≥18.5 cm, base diameter≥0.29cm, 18.5 cm>height≥15.5 cm, 0.29 cm>base diameter≥0.24 cm, and height<15.5 cm, base diameter<0.24 cm respectively.