| 摘要: |
| 土壤酸化是影响植物生长发育的重要因素之一, 为探讨石灰用量对降香黄檀 Dalbergia odorifra 人工幼林生长及光合特性的影响, 在降香黄檀人工幼林造林过程中施加不同量 (2. 5 kg·植穴-1
;
5 kg·植穴-1
; 10 kg·植穴-1
) 的石灰, 分析生长指标和光合生理指标。 结果显示, 造林后 33 个月, 降
香黄檀净光合速率、 叶面积、 苗高、 地径均随施加石灰量的增加逐渐上升。 在施加石灰量为 10 kg·植穴-1
时达到最大值, 其净光合速率、 叶面积、 苗高、 地径依次为 9. 76 μmol·m
-2·s
-1
、 19. 89 cm
2
、 359. 97 cm、
5. 91 cm, 比对照提高了 192. 20%、 77. 08%、 35. 03%、 44. 02% (P<0. 05)。 研究结果表明, 在酸性立地
条件下, 添加石灰有利于降香黄檀人工幼林的生长, 造林早期每植穴添加 10 kg 石灰较为适宜。 |
| 关键词: 石灰 降香黄檀 人工林 |
| DOI： |
| 分类号: |
| 基金项目:广东省林业科技创新项目 (2020KJCX007), 广州市生态园林科技协同创新中心项目 (202206010058)。 |
|
| Effect of Lime Addition on the Growth and Photosynthesis Characteristics of Dalbergia odorifera Plantation |
|
sumurong1, ZHU Shiming2, XU Daping2, CUI Zhiyi2, HONG Zhou2, XIAN Ganbiao1, XIONG Yongmei3, LIU Xiaojin2
|
|
1.Foshan Yunyong Forest Farm;2.Research Institute of Tropical Forestry;3.Guangzhou Institute of Forestry and Landscape Architecture
|
| Abstract: |
| Soil acidification is one of the important factors affecting plant growt
plore the effect of lime applicat
h and development. To exion on the growth and photosynthetic characteristics of Dalbergia odorifera plantation, and provide reference for efficient cultivation of D. odorifera plantations. Different amounts of lime (2. 5
kg·planting hole
-1
, 5 kg·planting hole
-1
, 10 kg·planting hole
-1
) were applied during the afforestation
process of D. odorifera plantation. After 33 months, the results showed that the net photosynthetic rate, leaf area, seedling height, and ground diameter of D. odorifera seedlings increased with the addition of lime up to 10
kg per seedling, where the maximum values. The net photosynthetic rate, leaf area, seedling height, and
ground diameter were 9. 76 μmol·m
-2 ·s
-1
, 19. 89 cm
2
, 359. 97 cm and 5. 91 cm respectively, which in-creased by 192. 20%、 77. 08%、 35. 03% and 44. 02% compared to the control group (P<0. 05). The results
indicated that adding lime was beneficial for the growth of young D. odorifera plantation under an acid site, and
adding 10 kg of lime per planting |
| Key words: lime Dalbergia odorifera p |
