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钾素营养对小南瓜光合特性的影响

Effect of potassium nutrition on photosynthetic characteristics of small Cushaw

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【作者】 曾志杰彭国良杨盛昌

【Author】 ZENG Zhi-jie~1, PENG Guo-liang~1, YANG Sheng-chang~2(1. Xiamen Research Institute of Agricultural Sciences, Xiamen, Fujian 361009, China; 2. School of Life sciences, Xiamen University, Xiamen, Fujian 361005, China)

【机构】 厦门市农业科学研究所厦门大学生命科学学院 福建 厦门 361009福建 厦门 361009福建 厦门 361005

【摘要】 利用CIRAS-2型便携式光合测定系统,研究不同钾素营养水平下小南瓜的光合特性。结果表明:小南瓜叶片的蒸腾速率、气孔导度、净光合速率的日变化与钾素营养之间呈显著的正相关(r值分别为0.965 1、0.816 0、0.926 9),细胞间隙中C02浓度日变化与钾素营养之间呈显著的负相关(r=0.847 9)。

【Abstract】 The photosynthetic characteristics of small Cushaw at different potassium levels was measured by portable photosynthesis systems CIRAS-2. The results showed that transpiration rate, stomatal conductance and net photosynthetic rate in leaves of small Cushaw were significantly and positively correlated with potassium level (r=0.9651, r=0.8160, r=0.9269), but intracellular concentration of CO2 in leaves of small Cushaw were significantly and negatively correlated with potassium level (r=-0.8479).

  • 【文献出处】 福建农业学报 ,Fujian Journal of Agricultural Sciences , 编辑部邮箱 ,2005年S1期
  • 【分类号】S642.1
  • 【被引频次】14
  • 【下载频次】74
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