Spatiotemporal changes of nitrate and Vc contents in hydroponic lettuce treated with various nitrogen-free solutions

doi:10.1080/09064710.2011.608709

	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
	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.