| 营养液更换频率对水培叶用莴苣产量和品质的影响 |
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| 引用本文： | 李嘉佳,宋世威,陈日远,刘厚诚,孙光闻.营养液更换频率对水培叶用莴苣产量和品质的影响[J].中国蔬菜,2012,1(24):69-72. |
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| 作者姓名： | 李嘉佳 宋世威 陈日远 刘厚诚 孙光闻 |
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| 作者单位： | 华南农业大学园艺学院，广东广州 510642 |
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| 基金项目： | 现代农业产业技术体系专项(CARS-25-C-04) |
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| 摘 要： | 通过在栽培过程中监测营养液的pH值及EC值，研究了营养液的3种更换频率，10 d（F10）、15 d（F15）和30 d（F30）对叶用莴苣产量和品质的影响。结果表明：与F10处理相比，F15、F30处理地上部鲜质量、叶片数等形态指标以及可溶性蛋白、VC含量等无显著差异；F15、F30处理的硝酸盐含量降低，可溶性糖含量升高，且F30处理好于F15处理。
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| 关 键 词： | 叶用莴苣 营养液 更换频率 产量 品质 |
Effects of Nutrient Solution Renewal Frequency on Yield and Quality of Lettuce in Soilless Culture |
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| LI Jia-jia
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SONG Shi-wei
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CHEN Ri-yuan
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LIU Hou-cheng
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SUN Guang-wen.Effects of Nutrient Solution Renewal Frequency on Yield and Quality of Lettuce in Soilless Culture[J].China Vegetables,2012,1(24):69-72. |
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| Authors: | LI Jia-jia SONG Shi-wei CHEN Ri-yuan LIU Hou-cheng SUN Guang-wen |
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| Institution: | College of Horticulture，South China Agricultural University，Guangzhou 510642，Guangdong，China |
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| Abstract: | Through monitoring the pH and EC（electrical conductivity）value of nutrient solution，effects of 3 different renewal frequencies——F10，F15，F30（i. e. the renewal frequencies were 10 days，15 days and 30 days，respectively）of the nutrient solution on the yield and quality of lettuce（Lactuca sativa L.）in soilless culture were studied．The results showed that compared with F10 treatment, no significant variation existed among F15，F30 treatments in terms of aboveground fresh weight，leaf number and other morphological characters，and in contents of soluble protein，VC．The contents of nitrate and soluble sugar were lower in F15 and F30 treatments．The contents of soluble sugar in F15 and F30 were increased．The F30 treatment was better than that of F15． |
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| Keywords: | Nutrient solution Renewal frequency Yield Quality |
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