文献类型：期刊文献

中文题名：石灰添加对檀香幼林生长及光合特性的影响

英文题名：Effects of lime addition on growth and of photosynthesis characteristics of young Santalum album plantation

作者：张启雷[1,2] 朱士铭[1] 徐大平[1] 冼杆标[3] 李超[3] 熊咏梅[4] 刘小金[1,2]

第一作者：张启雷

机构：[1]中国林业科学研究院热带林业研究所,广东广州510520;[2]林木资源高效生产全国重点实验室,北京100091;[3]佛山市云勇林场,广东佛山528518;[4]广州市林业和园林科学研究院,广东广州510080

年份：2025

卷号：45

期号：1

起止页码：18-25

中文期刊名：中南林业科技大学学报

外文期刊名：Journal of Central South University of Forestry & Technology

收录：;北大核心:【北大核心2023】；

基金：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)。

语种：中文

中文关键词：石灰;檀香;人工林;光合特性

外文关键词：lime;Santalum album;plantation;photosynthesis characteristics

分类号：S718.43

摘要：【目的】为探讨石灰用量对檀香人工幼林生长及光合特性的影响,提出适宜的石灰用量范围,为檀香人工林的高效培育提供理论参考。【方法】以6个月龄的檀香幼苗为研究对象,在野外设置不同石灰添加量(0、2.5、5、10 kg/植穴)控制试验进行定期观测。【结果】与对照组(0 kg/植穴)相比,添加石灰可显著提高檀香的苗高、地径和胸径(P<0.05),促进檀香幼林的生长。添加石灰处理33个月时,2.5 kg/植穴处理组檀香的苗高、地径和胸径较对照组分别提高了20.54%、25.19%和35.12%,5 kg/植穴处理组檀香的苗高、地径和胸径较对照组分别提高了31.70%、36.59%和50.78%,10 kg/植穴处理组檀香的苗高、地径和胸径较对照组分别提高了17.34%、27.72%和41.02%。添加石灰提高了檀香叶片的长宽比、叶绿素SPAD值和净光合速率。檀香生长速度随石灰用量的增加呈先上升后下降的变化趋势,以5 kg/植穴处理组为最大值,处理33个月后,檀香苗高、地径和胸径值分别为340.35、5.74和2.64 cm,显著高于2.5 kg/植穴和10 kg/植穴处理组(P<0.05)。檀香叶片净光合速率、面积、长宽比以及叶绿素SPAD值随着石灰用量的增加亦表现出先上升后下降的变化趋势,5 kg/植穴处理的值最高,分别为6.72μmol·m^(-2)·s^(-1)、14.50 cm~2、2.95和45.55。檀香叶片净光合速率与檀香高度呈显著正相关(P<0.05),与檀香胸径和地径呈极显著正相关(P<0.01);檀香的高度、地径和胸径3个指标之间极显著正相关;SPAD与檀香胸径呈显著正相关,与檀香高度和地径呈极显著正相关。【结论】酸性立地条件下添加石灰有利于檀香人工幼林的生长,添加量以5500~6500 kg/hm~2较为适宜。
【Objective】Soil acidification is one of the important factors affecting plant growth and development.To explore the effect of lime application on the growth and photosynthetic characteristics of Santalum album plantation,and then propose a suitable range of lime dosage and provide reference for efficient cultivation of S.album plantations.【Method】Regular observation was conducted on six months old sandalwood seedlings after adding different concentrations of lime(0 kg/planting hole,2.5 kg/planting hole,5 kg/planting hole,10 kg/planting hole).【Result】Results showed that lime significantly(P<0.05)increased the seedling height,ground diameter,and diameter at breast height of S.album,promoting the growth of S.album plantations.33 months after adding lime,the height,ground diameter,and diameter at breast height of S.album in the 2.5 kg/planting group increased by 20.54%,25.19%,and 35.12%compared to the control group,respectively.The height,ground diameter,and diameter at breast height of S.album in the 5 kg/planting group increased by 31.70%,36.59%,and 50.78%compared to the control group,respectively.The height,ground diameter,and diameter at breast height of S.album in the 10 kg/planting group increased by 17.34%,27.72%,and 41.02%compared to the control group,respectively.Lime increased the aspect ratio,chlorophyll SPAD value,and net photosynthetic rate of S.album leaves.As the amount of lime added increased,the growth rate of S.album increased first and then decreased.After 33 months,the height,ground diameter,and diameter at breast height of S.album was the highest in 5 kg/planting group,which were 340.35,5.74,and 2.64 cm,respectively.The net photosynthetic rate,area,aspect ratio,and chlorophyll SPAD value of S.album leaves increased first and then decreased with the increased of lime addition.Among them,the value of 5 kg/planting hole treatment was the highest,which was 6.72μmol·m^(-2)·s^(-1),14.50 cm2,2.95,45.55,respectively.Correlation analysis found that the net photosynthetic rate of S.album leaves was significantly positively correlated with the height(P<0.05),and extremely significantly positively correlated with the diameter at breast height and ground diameter(P<0.01).There was a highly significant positive correlation between the height,ground diameter,and diameter at breast height of S.album.SPAD was significantly positively correlated with the diameter at breast height,and extremely significantly positively correlated with the height and ground diameter.【Conclusion】The results indicate that lime application was beneficial for the growth of 2 S.album plantations,and 5500-6500 kg/hm were more suitable under strong acid sites.