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《Journal of Northwest Sci-Tech University of Agriculture and Forestry》 2003-02
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Application of chlorophyll meter SPAD-502 in diagnosis of nitrogen status and nitrogenous fertilizer in rice

ZHANG Jin heng,WANG Ke,WANG Ren chao (Institute of Agriculture Remote Sensing and Information System Application,Zhejiang University,Hangzhou,Zhejiang 310029,China)  
Basing on the significance of diagnosis of nitrogen status and nitrogenous fertilizer in rice,the article compares the advantages and disadvantages of those measures,which are used to diagnose the nitrogen status and nitrogenous fertilizer in rice,and pays attention to expatiate the measuring principle,characteristic and methods of the chlorophyll meter SPAD 502.And the development of the study using the chlorophyll meter SPAD 502 is introduced in this article.Finally,the author gives some suggestion about how to diagnose nitrogen status and nitrogenous fertilizer in rice using the chlorophyll meter SPAD 502.
【Fund】: 国家自然科学基金资助项目 (3 0 0 70 44 4)
【CateGory Index】: TH79
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