| 光照强度和营养液电导率对微型水培菊花苗生长的影响 |
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| 引用本文： | 周庐萍,崔永一.光照强度和营养液电导率对微型水培菊花苗生长的影响[J].浙江林学院学报,2010,27(4):554-558. |
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| 作者姓名： | 周庐萍 崔永一 |
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| 作者单位： | 浙江农林大学,园林学院,浙江,临安,311300 |
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| 基金项目： | 浙江省中青年学科带头人培养基金资助项目 |
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| 摘 要： | 采用微型水培技术，研究了不同光照强度和营养液电导率对菊花Chrysanthemum × morifolium苗生长的影响。结果表明，菊花营养液在高光照强度条件（250 μmol·m-2·s-1）下，pH值和电导率有显著变化，高光照强度和高营养液电导率（3.0 mS·cm-1）条件下，菊花苗地上部分和地下部分、整株的鲜质量、干质量以及株高、根长及新叶数显著大于其他处理。菊花苗在高光照强度下的光合速率、蒸腾速率和气孔导度也显著高于中（100 μmol·m-2·s-1），低（50 μmol·m-2·s-1） 光照强度处理。可见，高光照强度和高营养液电导率有利于微型水培菊花苗的培养。图5表1参11
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| 关 键 词： | 园艺学 微型水培 光照强度 电导率 菊花 |
Chrysanthemum plantlet growth with photosynthetic photon flux and electrical conductivity treatments in a microponic system culture |
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| ZHOU Lu-ping,CUI Yong-yi.Chrysanthemum plantlet growth with photosynthetic photon flux and electrical conductivity treatments in a microponic system culture[J].Journal of Zhejiang Forestry College,2010,27(4):554-558. |
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| Authors: | ZHOU Lu-ping CUI Yong-yi |
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| Institution: | (School of Landscape Architecture, Zhejiang A ＆ F University, Lin’an 311300, Zhejiang, China) |
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| Abstract: | The effects of photosynthetic photon flux（PPF） and electrical conductivity（EC） in a nutrient solution on growth of Chrysanthemum × morifolium plantlets using a microponic system were studied. Results showed that with high PPF （250 μmol·m-2·s-1）, the pH and EC value of the nutrient solution changed significantly. Compared to the other two treatments （0.8 and 1.6 mS·cm-1 of EC, 50 and 100 μmol·m-2·s-1 of PPF）, a high PPF （250 μmol·m-2·s-1） and EC （3.0 mS·cm-1） increased fresh weight, dry weight, shoot length, root length, and number of new leaves. Also, compared to the two lower PPF treatments （50 and 100 μmol·m-2·s-1）, with the high PPF, CO2-uptake, stomatal conductance, and transpiration in leaves were higher. Thus, a high PPF and EC value for the nutrient solution was favorable for the growth of Chrysanthemum × morifolium plantlets in a microponic system culture. |
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| Keywords: | horticulture microponic system photosynthetic photon flux （PPF） electrical conductivity （EC） Chrysanthemum × morifolium |
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