Spatiotemporal changes of nitrate and Vc contents in hydroponic lettuce treated with various nitrogen-free solutions | |
Liu, Wen Ke; Yang, Qi Chang; Qiu, Zhi Ping | |
刊名 | ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE
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2012 | |
卷号 | 62期号:3页码:286-290 |
关键词 | Leaf blade nitrogen-free solution nutritional quality petiole vitamin C |
ISSN号 | 0906-4710 |
DOI | 10.1080/09064710.2011.608709 |
通讯作者 | Liu, Wen Ke |
英文摘要 | Nowadays, off-season leafy vegetables are generally characterized by low vitamin C (Vc) content and high nitrate accumulation due to low light intensity inner protected systems and high-level nitrogen supply. A glasshouse experiment was conducted to investigate the effects of three kinds of nitrogen-free solution treatments before harvest on Vc and nitrate contents in expanded leaf blades, expanded leaf petioles and old leaves of hydroponic lettuce. The results showed that using nitrogen-free solutions could decrease nitrate contents of expanded leaf blades, expanded leaf petioles and old leaves, also nitrate contents in above parts reduced increasingly with treatment time extending. In addition, three nitrogen-free solution treatments increased the Vc content of expanded leaf blades instead of expanded leaf petioles and old leaves. There were instead of significant positive correlations between nitrate contents but Vc contents of expanded leaf blades, expanded leaf petioles and old leaves. To conclude, nitrogen disruption treatment before harvest could effectively reduce nitrate contents in edible parts of lettuce, and also improve Vc content in expanded leaf blade. |
学科主题 | Agronomy ; Soil Science ; AGRONOMY ; SOIL SCIENCE |
语种 | 英语 |
出版者 | TAYLOR & FRANCIS AS |
WOS记录号 | WOS:000301337100011 |
内容类型 | 期刊论文 |
源URL | [http://111.203.20.206/handle/2HMLN22E/19906] ![]() |
专题 | 农业环境与可持续发展研究所 |
作者单位 | Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Key Lab Agroenvironm & Climate Change, Minist Agr, Beijing 100081, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Wen Ke,Yang, Qi Chang,Qiu, Zhi Ping. Spatiotemporal changes of nitrate and Vc contents in hydroponic lettuce treated with various nitrogen-free solutions[J]. ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE,2012,62(3):286-290. |
APA | Liu, Wen Ke,Yang, Qi Chang,&Qiu, Zhi Ping.(2012).Spatiotemporal changes of nitrate and Vc contents in hydroponic lettuce treated with various nitrogen-free solutions.ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE,62(3),286-290. |
MLA | Liu, Wen Ke,et al."Spatiotemporal changes of nitrate and Vc contents in hydroponic lettuce treated with various nitrogen-free solutions".ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE 62.3(2012):286-290. |
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