SU Fu-bao,QIN Feng-mei,WEN Zhong-lin,et al.Effect of Cutting Height and Density on Leaf Biomass of Camptotheca acuminata Decne in Bed Seedings[J].Northern Horticulture,2013,37(09):81-83.
喜树留床苗截干高度和密度对叶片生物量的影响
- Title:
- Effect of Cutting Height and Density on Leaf Biomass of Camptotheca acuminata Decne in Bed Seedings
- 文章编号:
- 1001-0009（2013）09-0081-03
- Keywords:
- Camptotheca acuminata Decne; cutting height; density; biomass
- 分类号:
- S 759.3+9
- 文献标志码:
- A
- 摘要:
- 以1 a生喜树留床苗为试材，研究了截干高度和密度对喜树叶片生物量的影响。结果表明：不同截干高度、密度及截干高度与密度组合对喜树留床苗的叶片生物量有显著影响。在密度为每行10株的情况下，喜树留床苗不同截干高度萌芽苗的叶片生物量从高到低依次为25 cm＞20 cm＞15 cm＞10 cm；在1 m宽的苗床上，喜树留床苗每行10株比5株萌芽苗的叶片生物量高31.3%；不同截干高度与密度组合萌芽苗的叶片生物量从高到低依次为25 cm×10株＞20 cm×10株＞25 cm×5株＞15 cm×10株＞20 cm×5株＞10 cm×10株＞15 cm×5株＞10 cm×5株，排前4名组合的生物量分别是最低组合的178.3%、182.2%、196.4%和222.4%，故喜树留床苗以每行保留10株且在20~25 cm高度截干为好。
- Abstract:
- Taking 1-year-old Camptotheca acuminata Decne in bed seedlings as test material，the effect of stump height and density on leaf biomass of Camptotheca acuminata Decne were studied.The results showed that different cutting heights，densities and combinations of height and density had a significantly effect on leaf biomass of seedlings.At a density of 10 stems per line，the order of leaf biomass of germination seedlings in different cutting heights from high to low was 25 cm＞20 cm＞15 cm＞10 cm；in 1 meter wide seedbed，leaf biomass of 10 stems per line was 31.3% higher than 5 stems per line.In different combinations of height and density，the order of leaf biomass of germination seedlings from high to low was 25 cm×10 stems＞20 cm×10 stems＞25 cm×5 stems＞15 cm×10 stems＞20 cm×5 stems＞10 cm×10 stems＞15 cm×5 stems＞10 cm×5 stems,the top four biomass were 178.3%，182.2%，196.4% and 222.4% as much as the lowest respectively.Therefore，10 stems per line and cutting height of 20～25 cm gave the best result.
参考文献/References:
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备注/Memo
第一作者简介：苏付保（1963-），男，广西灵川人，硕士，教授，高级工程师，研究方向为森林培育与职业教育。E-mail：67160976@qq.com.