| 不同树形龙安柚冠层特性 |
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| 引用本文： | 张抗萍,李荣飞,刘松月,何桥,梁国鲁,陆智明,易佑文,胡涛,郭启高.不同树形龙安柚冠层特性[J].生态学报,2017,37(24):8456-8466. |
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| 作者姓名： | 张抗萍 李荣飞 刘松月 何桥 梁国鲁 陆智明 易佑文 胡涛 郭启高 |
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| 作者单位： | 南方山地园艺学教育部重点实验室/西南大学园艺园林学院, 重庆 400716;西南大学农学与生物科技学院, 重庆 400716,南方山地园艺学教育部重点实验室/西南大学园艺园林学院, 重庆 400716,南方山地园艺学教育部重点实验室/西南大学园艺园林学院, 重庆 400716,南方山地园艺学教育部重点实验室/西南大学园艺园林学院, 重庆 400716,南方山地园艺学教育部重点实验室/西南大学园艺园林学院, 重庆 400716,南方山地园艺学教育部重点实验室/西南大学园艺园林学院, 重庆 400716,四川省广安市科技开发培训中心, 广安 638500,四川省广安市广安区农业局, 广安 638500,南方山地园艺学教育部重点实验室/西南大学园艺园林学院, 重庆 400716 |
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| 基金项目： | “十二五”国家科技支撑计划项目（2014BAD16B0102-I） |
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| 摘 要： | 以开心形、Y字形、双层分层形和自然圆头形的龙安柚为试验材料,比较不同树形的冠层特性、叶片结构和生理特征,以期为龙安柚果园小环境的调控提供理论基础。结果表明:(1)开心形间隙分数阈值最高,是自然圆头形的4.33倍。开心形与Y字形的冠层光合辐射与透射系数均显著高于其他树形,但二者无显著差异,表明开心形和Y字形的冠层通风透光特性较好。(2)开心形与Y字形叶片厚度增加,叶面积和气孔密度较大,栅栏/海绵组织厚度和组织紧密度较高,叶片组织疏密度较低,且二者无显著差异,表明开心形与Y字形利于提高叶片的光合作用,降低蒸腾作用。(3)Y字形和开心形净光合速率、水分利用率、最大表观电子传递速率、初始斜率和半饱和光强较高,而蒸腾速率较低,二者对强光的耐受能力较强;其中开心形蒸腾速率最低为2.43 mmol m~(-2)s~(-1),且其结果枝光抑制参数最小,为0.629。说明开心形为最佳的高光效树形。(4)冠层微环境因子、叶片结构及光合生理指标之间多呈极显著相关关系,但开心形叶片结构和生理的大部分指标与冠层环境因子之间相关性较低,说明开心形树形不同部位的营养枝和结果枝的叶片性状差异较小,其光渗透性好,整个冠层的光截获能力和有效光辐射的分布差异较小,笔者认为开心形是龙安柚栽培中的适宜高光效树形。
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| 关 键 词： | 龙安柚 树形 冠层微环境 叶片特性 叶片光合生理 |
| 收稿时间： | 2016/11/22 0:00:00 |
Analysis of the canopy structural characteristics of different training systems for Citrus grandis var. longanyou |
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| ZHANG Kangping,LI Rongfei,LIU Songyue,HE Qiao,LIANG Guolu,LU Zhiming,YI Youwen,HU Tao and GUO Qigao.Analysis of the canopy structural characteristics of different training systems for Citrus grandis var. longanyou[J].Acta Ecologica Sinica,2017,37(24):8456-8466. |
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| Authors: | ZHANG Kangping LI Rongfei LIU Songyue HE Qiao LIANG Guolu LU Zhiming YI Youwen HU Tao and GUO Qigao |
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| Institution: | Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China;College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China,Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China,Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China,Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China,Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China,Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China,Guang''an Science and Technology Development and Training Center, Guang''an 638500, China,Guang''an District Agricultural Bureau, Guang''an 638500, China and Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China |
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| Abstract: | |
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| Keywords: | Citrus grandis var longanyou training system canopy microclimate leaf characteristics leaf photosynthetic physiology |
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