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园艺学报 ›› 2004, Vol. 31 ›› Issue (5): 603-606.

• 研究论文 • 上一篇    下一篇

茄子不同群体结构光合特性、干物质分配及其对产量的影响

杨国栋;周宝利*;付亚文;张恩平;李沫   

  1. (沈阳农业大学园艺学院, 沈阳110161)
  • 收稿日期:2004-01-15 修回日期:2004-07-22 出版日期:2004-10-25 发布日期:2004-10-25
  • 通讯作者: 周宝利

Photosynthetic Characteristics , Dry Matter Distribution Pattern and Their Effects on Eggplant Yield in Different Canopy Structures

Yang Guodong;Zhou Baoli*;Fu Yawen;Zhang Enping;Li Mo   

  1. ( Department of Horticulture , Shenyang Agricultural University , Shenyang 110161 , China)
  • Received:2004-01-15 Revised:2004-07-22 Online:2004-10-25 Published:2004-10-25
  • Contact: Zhou Baoli

摘要: 以嫁接茄子为试材, 采用4. 1 、4. 8 、5. 5 万株·hm- 2 3 种密度和双杆整枝、自然整枝, 在日光温室吊绳栽培, 研究不同群体结构对光合特性、干物质分配及产量的影响。结果表明: 双杆整枝的功能叶光合速率高于自然整枝, 且各层次光合产物分布均匀, 根系生长较旺盛, 是增产的主要原因。茄子产量与中下部功能叶片光合速率关系密切, 在试验范围内密度越小, 中下部叶片水分利用效率和蒸腾速率越高, 光合速率越高, 呼吸消耗小, 总产量也越高。

关键词: 茄子, 嫁接, 栽培密度, 整枝方式, 光合速率, 干物质分配

Abstract: The photosynthetic characteristics and dry matter distribution pattern were studied with gafted eggplant in three plant densities (41000 plants ·hm-2 , 48000 plants ·hm-2 and 55000 plants·hm- 2) and two training methods (natural training and double - stem training) in greenhouse. The results indicated that photosynthetic rate was higher and dry matter was distributed evenly at different canopy levels with double - stem training. Vigorous root growth was also found in this treatment .All these resulted in higher yield of eggplant . There lied significant positive correlation between eggplant yield and functional leaves at middle and lower canopy levels. The lower plant density , the higher water use efficiency and Transpiration rate. Higher photosynthetic rate together with lower respiration rate contributed to higher yield.

Key words: Eggplant, Graft, Plant density, Training method, Photosynthetic rate, Dry matter distribution

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