[1] ARREGUI L M, LASA B, LAFARGA A, et al. Evaluation of chlorophyll meters as tools for N fertilization in winter wheat under humid Mediterranean conditions[J]. Europ J Agron, 2006, 24(2):140-148.
[2] HAWKINS J A, SAWYER J E, BARKER D W, et al. Using relative chlorophyll meter values to determine nitrogen application rates for corn[J]. Agron J, 2007, 99(4):1034-1040.
[3] NOURA Z, MARIANNE B, GILLES B, et al. Chlorophyll measurements and nitrogen nutrition index for the evaluation of corn nitrogen status[J]. Agron J, 2010, 100(5):1264-1273.
[4] PROST L, JEUFFROY M H. Replacing the nitrogen nutrition index by the chlorophyll meter to assess wheat N status[J]. Agron Sustain Dev, 2007, 27(4):321-330.
[5] 李金文.基于水稻叶片生理生态学特征的氮营养诊断[D].杭州: 浙江大学, 2010.

LI Jinwen. The Diagnosis of Rice N Status based on Leaf Physioecological Characteristics[D]. Hangzhou: Zhejiang University, 2010.
[6] 彭显龙, 刘元英, 罗盛国, 等.实地氮肥管理对寒地水稻干物质积累和产量的影响[J].中国农业科学, 2006, 39(11):2286-2293.

PENG Xianlong, LIU Yuanying, LUO Shengguo, et al. Effects of site-specific nitrogen management on yield and dry matter accumulation of rice from cold areas of northeastern China[J]. Agric Sci Sin, 2006, 39(11):2286-2293.
[7] 杨虎.水稻冠层叶片氮素分布变化及氮营养状况快速诊断[D].杭州: 浙江大学, 2014.

YANG Hu. Changes of Nitrogen Distribution and Rapid Diagnosis for Nitrogen Nutrition Status in the Canopy Leaf of Rice[D]. Hangzhou: Zhejiang University, 2014.
[8] 李刚华, 薛利红, 尤娟, 等.水稻氮素和叶绿素SPAD叶位分布特点及氮素诊断的叶位选择[J].中国农业科学, 2007, 40(6):1127-1134.

LI Ganghua, XUE Lihong, YOU Juan, et al. Spatial distribution of leaf N content and SPAD value and dselectioon of suitable leaf for N diagnosis in rice[J]. Sci Agric Sin, 2007, 40(6):1127-1134.
[9] 凌启鸿, 王绍华, 丁艳锋, 等.关于用水稻"顶3顶4叶叶色差"作为高产群体叶色诊断统一指标的再论证[J].中国农业科学, 2017, 50(24):4705-4713.

LING Qihong, WANG Shaohua, DING Yanfeng, et al. Re-evaluation of using the color difference between the top 3rd leaf and the 4th leaf as a unified indicator for high-yielding rice[J]. Sci Agric Sin, 2017, 50(24):4705-4713.
[10] 姜继萍, 杨京平, 杨正超, 等.不同氮素水平下水稻叶片及相邻叶位SPAD值变化特征[J].浙江大学学报(农业与生命科学版), 2012, 38(2):166-174.

JIANG Jiping, YANG Jingping, YANG Zhengchao, et al. Dynamic characteristics of SPAD value of rice leaf and adjacent leaf under different N application rates[J]. J Zhejiang Univ Agric Life Sci, 2012, 38(2):166-174.
[11] 李杰, 冯跃华, 牟桂婷, 等.基于SPAD值的水稻施氮叶值模型构建及应用效果[J].中国农业科学, 2017, 50(24):4714-4724.

LI Jie, FENG Yuehua, MOU Guiting, et al. Construction and application effect of the leaf value model based on SPAD value in rice[J]. Sci Agric Sin, 2017, 50(24):4714-4724.
[12] 徐富贤, 熊洪, 张林, 等.杂交中稻齐穗后叶片SPAD值衰减对再生力的影响[J].中国农业科学, 2009, 42(10):3442-3450.

XU Fuxian, XIONG Hong, ZHANG Lin, et al. Effects of the decreased index of SPAD value of leaf after full heading on ratooning ability[J]. Sci Agric Sin, 2009, 42(10):3442-3450.
[13] 肖立中, 李之林, 张建国, 等.前期施氮对二系杂交水稻分蘖及其成穗的影响[J].华南农业大学学报, 1999, 20(3):10-14.

XIAO Lizhong, LI Zhilin, ZHANG Jianguo, et al. Effects of nitrogen application during early growth stage on the tillers and the tiller-panicle turnover rate of two-line hybrid rice[J]. J South China Agric Univ, 1999, 20(3):10-14.
[14] 姜继萍.水稻冠层叶片SPAD数值变化特征及其在氮素营养诊断中的应用[D].杭州: 浙江大学, 2012.

JIANG Jiping. Dynamic Characteristics of SPAD Values of Different Positions Leaves in the Canopy of Rice and Its Application for Nitrogen Nutrition Diagnosis in Rice Production[D]. Hangzhou: Zhejiang University, 2012.