| 大蒜群体光合特性及其与产量关系的研究 |
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| 引用本文： | 艾希珍,陈利平,张振贤,马兴庄,王民,冯红军.大蒜群体光合特性及其与产量关系的研究[J].园艺学报,2002,29(1):39-42. |
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| 作者姓名： | 艾希珍 陈利平 张振贤 马兴庄 王民 冯红军 |
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| 作者单位： | (山东农业大学园艺学院, 泰安271018) |
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| 摘 要： | 对大蒜群体光合特性及其与产量的关系进行了研究。结果表明, 大蒜群体光合速率(CPn) 随生育期先增后降, 蒜薹伸长期最高。CPn 日变化呈明显单峰曲线, 峰值在中午12 时左右。大蒜群体光合作用饱和光强为1 760μmol·m- 2·s - 1 ; 补偿点290μmol·m- 2·s - 1 ; CO2 饱和点和补偿点分别为1 883μmol·mol - 1和121μmol·mol - 1 。在种植密度为22. 5～52. 5 株/ m2 , 叶面积指数(LAI) 为1. 39～3. 14 范围内, CPn 随种植密度和LAI 的增加而增加。低密度下产量随种植密度的增加而逐渐增加, 超过52. 5 株/ m2 时则减少, CPn 与大蒜产量成正相关。
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| 关 键 词： | 大蒜 光合速率 叶面积指数 产量 |
| 文章编号： | 0513-353X(2002)01-0039-04 |
| 修稿时间： | 2001年4月13日 |
Canopy Photosynthetic Characteristics and Its Relationship to Yield in Garlic |
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| Ai xizhen,Chen Liping,Zhang Zhenxian,Ma Xingzhuang,Wang Min,and Feng Hongjun.Canopy Photosynthetic Characteristics and Its Relationship to Yield in Garlic[J].Acta Horticulturae Sinica,2002,29(1):39-42. |
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| Authors: | Ai xizhen Chen Liping Zhang Zhenxian Ma Xingzhuang Wang Min and Feng Hongjun |
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| Institution: | ( Department of Horticulture , Shandong Agricultural University , Tai’an 271018) |
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| Abstract: | Abstract : The canopy photosynthetic characteristics of garlic was studied in this experiment . The result showed that there were obvious stage and diurnal changes of canopy photosynthetic rate (CPn) of garlic. CPnincreased at first and decreased later with the growth stage advanced. Its peak was at bolting stage. The diurnal changes of CPn was a single2peak curve , and its peak value was at 12 : 00 A.M. CPn increased with LAI in therange from 1. 39 to 3. 14. The light saturation point and compensation point of canopy photosynthesis were about 1 960μmol·m- 2·s - 1 and 210μmol·m- 2·s - 1 , while the CO2 saturation point and compensation point were 1 955 μmol·mol - 1 and 136μmol·mol - 1 . The CPn of garlic is positively related to the yield. |
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| Keywords: | Garlic Canopy photosynthetic rate LAI Yield |
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