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浙江大学学报（农业与生命科学版）
浙江大学学报(农业与生命科学版)  2016, Vol. 42 Issue (6): 703-712    DOI: 10.3785/j.issn.1008-9209.2016.01.251
农业科学     
不同供氮水平下雾培与水培生菜生长和营养品质差异的比较
丁文雅1,2， 林若筠3， 周伟伟4， 周恺4， 林咸永1,4*
1.浙江大学农业试验站，杭州 310058；2.浙江大学环境与资源学院，浙江省亚热带土壤与植物营养重点研究实验室，杭州310058；3.浙江大学附属中学，杭州 310007；4.浙江大学环境与资源学院，教育部环境修复与生态健康重点实验室，杭州 310058
Comparative study on the difference of growth and nutritional quality for lettuce (Lactuca sativa L.) between aeroponic and hydroponic cultivation systems under different nitrogen levels
DING Wenya1,2, LIN Ruoyun3, ZHOU Weiwei4, ZHOU Kai4, LIN Xianyong1,4*
(1. Agricultural Experimental Station, Zhejiang University, Hangzhou 310058, China; 2. Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; 3. The High School Attached to Zhejiang University, Hangzhou 310007, China; 4. Key Laboratory of Environment Remediation and Ecosystem Health of the Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China)
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摘要： 通过培养试验综合比较了不同供氮水平（2、8和20 mmol/L NO3--N）下水培与雾培生菜的产量、品质和抗氧化活性差异。结果表明：在相同供氮水平下，雾培系统中生菜的生物量、根系生长、相对生长速率、光合作用强度均显著高于水培，而硝酸盐含量显著低于水培；雾培生菜叶片和茎的铁离子还原/抗氧化能力（ferric reducing/antioxidant power，FRAP）值和二苯代苦味酰基（1,1-diphenyl-2-picrydrazyl，DPPH）自由基清除率与水培相当或高于水培；虽然可溶性蛋白质、可溶性糖、还原型抗坏血酸含量在雾培与水培生菜中的差异无统计学意义（P>0.05），谷胱甘肽在水培生菜体内含量较高，但雾培生菜体内这4种营养物质的积累量均显著高于水培；随着供氮水平的提高，在这2种栽培方式下生菜体内的硝酸盐与可溶性蛋白质含量均显著增加，而可溶性糖、还原型抗坏血酸和谷胱甘肽含量，以及FRAP值和DPPH自由基清除率均逐渐降低，但在8 mmol/L供氮水平处理下，生菜生物量、根系形态指标、光合作用强度，以及可溶性蛋白质、可溶性糖、还原型抗坏血酸及谷胱甘肽积累量均达到较高水平。说明雾培较水培有利于生菜生物量和抗氧化物质的积累以及抗氧化活性的提高，且在适宜的氮素供应水平（8 mmol/L）下表现得尤其明显。可见，雾培比水培更具产量和品质优势，是适宜蔬菜生产的无土栽培模式。
Abstract: Soilless culture is considered to be an alternative to soilbased cultivation. It has been developed quickly because of rapid growth on biomass and high quality of crops. Hydroponics and aeroponics are both soilless culture, but with different techniques. Aeroponics is a newly soilless culture technique, in which the roots are suspended midair inside a chamber and are intermittently sprayed with a nutrient solution to supply the plants with mineral and water. Unlike hydroponics using water as a growing medium and relying on essential mineral to sustain plant growth, aeroponics is conducted without a growing medium. Thus, there are significant differences of root zone between aeroponic and hydroponic cultivation systems. However, little effort has been found in the literature evaluating the effect of the two soilless techniques on yield and quality of growing vegetable.
In this study, experiments were carried out to compare the biomass production and nutritional quality of lettuce between hydroponic and aeroponic cultivation systems under different nitrogen levels (2, 8 and 20 mmol/L NO3--N). 
Results showed that under the same nitrogen level, higher biomass, root growth, relative growth rate and photosynthetic rate were observed for lettuces grown in aeroponics than in hydroponics. Nitrate and glutathione contents were lower in aeroponics, while the ferric reducing/antioxidant power (FRAP) value and 1, 1-diphenyl-2-picrydrazyl (DPPH) radical scavenging rate were comparable to those in hydroponics. There were no differences in contents of soluble protein, soluble sugar and ascorbic acid, but the accumulations of soluble protein, soluble sugar, ascorbic acid and glutathione in aeroponics were markedly higher than those in hydroponics. Furthermore, the contents of nitrate and soluble protein of lettuces increased both in hydroponics and aeroponics, while the concentrations of soluble sugar, ascorbic acid and glutathione, FRAP value and DPPH radical scavenging rate decreased with increasing nitrogen level. Highest biomass, root morphological index, photosynthetic index, accumulations of soluble protein, soluble sugar, ascorbic acid and glutathione were observed under the nitrogen level of 8 mmol/L. 
In sum, aeroponics is beneficial for higher biomass, antioxidant accumulation and antioxidative activity, especially under the nitrogen level of 8 mmol/L.
出版日期: 2016-11-19
CLC:  S 636.2  
基金资助: 国家高技术研究发展计划(863计划)项目(2013AA103007)；国家自然科学基金(30971859)；浙江省科技厅重大专项(2010E70002)；浙江省教育厅项目(Y201329963)；浙江省亚热带土壤与植物营养重点研究实验室资助；国际植物营养研究所(IPNI)项目
通讯作者: 林咸永(http://orcid.org/0000-0002-9801-7008)，Tel:+86-571-88982476,E-mail:xylin@zju.edu.cn    
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引用本文:

丁文雅， 林若筠， 周伟伟， 周恺， 林咸永. 不同供氮水平下雾培与水培生菜生长和营养品质差异的比较[J]. 浙江大学学报(农业与生命科学版), 2016, 42(6): 703-712.

DING Wenya, LIN Ruoyun, ZHOU Weiwei, ZHOU Kai, LIN Xianyong. Comparative study on the difference of growth and nutritional quality for lettuce (Lactuca sativa L.) between aeroponic and hydroponic cultivation systems under different nitrogen levels. Journal of Zhejiang University (Agriculture and Life Sciences), 2016, 42(6): 703-712.

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http://www.zjujournals.com/agr/CN/10.3785/j.issn.1008-9209.2016.01.251    或    http://www.zjujournals.com/agr/CN/Y2016/V42/I6/703

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