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Journal of Drainage and Irrigation Machinery Engin  2019, Vol. 37 Issue (1): 63-72    DOI: 10.3969/j.issn.1674-8530.18.1151
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Experiment on sweet pepper nitrogen detection based on nearinfrared reflectivity spectral ridge regression
XU Di, LI Yinong, GONG Shihong, ZHANG Baozhong
1.China Institute of Water Resources & Hydropower Research, National Key Laboratory of Basin Water Cycle Simulation and Control, Beijing 100038, China; 2.National Center of Efficient Irrigation Engineering and Technology Research, Beijing 100048, Chin

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