纳米TiO<sub>2</sub>光催化处理对水培生菜产量及品质的影响

doi:10.3969/j.issn.1000-7091.2013.02.019

华北农学报 ›› 2013, Vol. 28 ›› Issue (2): 103-107. doi: 10.3969/j.issn.1000-7091.2013.02.019

纳米TiO₂光催化处理对水培生菜产量及品质的影响

邱志平^1,2, 杨其长^1,2, 刘文科^1,2

1. 中国农业科学院农业环境与可持续发展研究所, 北京 100081;
2. 农业部设施农业节能与废弃物处理重点实验室, 北京 100081

收稿日期:2013-01-24 出版日期:2013-04-28
通讯作者: 刘文科(1974－)，男，河北孟村人，研究员，博士，主要从事设施蔬菜营养与光生物学研究。
作者简介:邱志平(1986－)，女，湖北谷城人，在读硕士，主要从事设施园艺无土栽培与环境控制研究。
基金资助:
国家“863计划”重大项目(2011AA03A114);国家科技支撑计划(2011BAE01B00);中央级公益性科研院所基本科研业务费项目(BSRF201004)

Effect of Nano-TiO2Photocatalysis on Yield and Quality of Hydroponic Lettuce

QIU Zhi-ping^1,2, YANG Qi-chang^1,2, LIU Wen-ke^1,2

1. Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
2. Key Lab of Energy Conservation and Waste Management of Agricultural Structures, Ministry of Agriculture, Beijing 100081, China

Received:2013-01-24 Published:2013-04-28

摘要/Abstract

摘要： 以纳米TiO2光催化处理水培过多茬生菜的营养液,研究了营养液中植物自毒物质、有效态Fe、Mn、Zn元素含量的变化,并以处理后的营养液水培生菜,研究了纳米TiO2光催化处理对水培生菜产量及品质的影响。结果表明:纳米TiO2光催化处理可有效去除营养液中的植物自毒物质|但降低有效态Fe、Mn、Zn元素含量,尤其是降低了有效Fe元素含量|以经过纳米TiO2光催化处理后的营养液培养的生菜单株鲜质量和总产量相比对照均显著提高|生菜叶片中叶绿素、Vc及可溶性糖含量均比对照有一定程度的提高,而总酚及类黄酮含量则显著低于对照。总之,纳米TiO2光催化处理可有效降低水培生菜营养液中的植物自毒物质,促进生菜的生长,在封闭式无土栽培系统中具有极大的应用前景。

关键词: 纳米TiO2, 光催化, 营养液, 生菜, 产量, 品质

Abstract: The effect of nano-TiO2photocatalysis on removal of phytotoxic substances in reused nutrient solution and its effect on contents of effective Fe,Mn,Zn element in reused nutrient solution and thegrowth of hydroponic lettuce were studied. The results showed that nano-TiO2photocatalysis could effectively remove the phytotoxic sub-stances in nutrient solution,but decreased the contents of effective Fe,Mn,Zn element in nutrient solution,especial-ly for Fe;lettuce total yield and the average plant fresh weight were increasedgreatly compared to control;the chlo-rophyll,Vc and soluble sugar contents in lettuce leaf also had improved compared to control,but the total phenolic and flavonoid contents in lettuce leaf were lower than those of control. Nano-TiO2photocatalytsis could effectively re-duce the phyotoxic substances accumulated in nutrient solution and promote thegrowth of hydroponic lettuce. There-fore,it will havegreat application prospects in closed soilless culture system.

Key words: Nano-TiO₂, Photocatalysis, Nutrient solution, Lettuce, Yield, Quality

中图分类号:

S634. 01

邱志平, 杨其长, 刘文科. 纳米TiO₂光催化处理对水培生菜产量及品质的影响[J]. 华北农学报, 2013, 28(2): 103-107. doi: 10.3969/j.issn.1000-7091.2013.02.019.

QIU Zhi-ping, YANG Qi-chang, LIU Wen-ke,. Effect of Nano-TiO2Photocatalysis on Yield and Quality of Hydroponic Lettuce[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(2): 103-107. doi: 10.3969/j.issn.1000-7091.2013.02.019.

http://www.hbnxb.net/CN/Y2013/V28/I2/103

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