文献类型： 外文期刊
第一作者： Wu, Xinyan
作者： Wu, Xinyan;Guo, Jianhua;Zhao, Chunjiang;Chen, Liping;Yang, Yue Ying;Wu, Xinyan;Zhang, Yigong;Fang, Zheng
作者机构：
关键词： Tomato; SPAD; Non-Destructive Nitrogen
期刊名称：SENSOR LETTERS （ 影响因子：0.558； 五年影响因子：0.58 ）
ISSN： 1546-198X
年卷期： 2012 年 10 卷 1-2 期
页码：
收录情况： SCI
摘要： This study developed a non-destructive, fast, simple nutritional diagnosis method to test the nitrogen status of tomato in the greenhouse. Field experiments were conducted during 2009-2010 at the Xiaotangshan Precision Agriculture Experimental Base, Changping District, Beijing. SPAD-502 was used to determine the leaves of tomato under different growth stages. The research results showed that chlorophyll and nitrogen contents of tomato were increasing with the increase in the quantity of fertilizer, and SPAD also increases gradually. SPAD values had a good correlation with chlorophyll contents of tomato leaves. In other words SPAD could be integrated to diagnose tomato nitrogen nutritional status of tomato.
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