| 钾对荔枝光合作用和呼吸作用的影响 |
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| 引用本文： | 邓义才,倪耀源,陈乃荣.钾对荔枝光合作用和呼吸作用的影响[J].华南农业大学学报,1994(4). |
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| 作者姓名： | 邓义才 倪耀源 陈乃荣 |
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| 作者单位： | 广州华南农业大学园艺系，广东省农业科学院 |
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| 摘 要： | 施钾能增强荔枝的光合作用。对光合的动态变化测定表明，在光照强度和ＣＯ２浓度低的条件下，施钾对光合速率的提高更加明显。施钾也能降低荔枝的暗呼吸速率以及抗坏血酸氧化酶和多酚氧化酶活性。试验还显示，当氮磷营养不能正常配合供应时，则不能较好地产生以上效应。通过真空渗入Ｋ＋法的测定表明，钾在一定浓度范围内对光合的促进作用与抑制暗呼吸作用有关。
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| 关 键 词： | 荔枝，钾，光合作用，呼吸作用 |
STUDIES ON THE EFFECTS OF POTASSIUM ON PHOTOSYNTHESIS AND RESPIRATION OF LITCHI |
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| Deng Yicai,Ni Yaoyuan,Chen Nairong.STUDIES ON THE EFFECTS OF POTASSIUM ON PHOTOSYNTHESIS AND RESPIRATION OF LITCHI[J].Journal of South China Agricultural University,1994(4). |
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| Authors: | Deng Yicai Ni Yaoyuan Chen Nairong |
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| Abstract: | The dynamics of litchi leaves photosynthesis treated with different levels of potassium were studied. The results showed that potassium treatment could increase photosynthetic rate,especially when the intensity of light or CO2 concentration was low. Potassium treatment could also decrease respiration rate and the activity of ascorbic oxidase and polyphenol oxidase. It was found that only when there were normal nitrogen and phosphorus levels in the tree could potassium treatment significantly produce these effects. Vacuum infiltration of litchi leaf discs with differentconcentrations showed that the stimulation of potassium on photosyntheticrate within certain limits was related to the inhi-bition of respiration rate |
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| Keywords: | itchi potassium photosynthesis respiration |
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