赵晓雁，李新裕，魏 健，等．长绒棉新海21号叶片叶绿素含量动态分析[J]．新疆农业科学，2007，44(5)：628-631. ZHAO Xiao-yan, Li Xin-yu,Wei Jian, et al. Dynamic analysis on chlorophyll content in leaf of long fiber cotton Xinhai 21[J].Xinjiang Agricultural Science, 2007, 44(5): 628-631. [2] 支金虎，伍维模，危常洲，等．水分与氮素对膜下滴灌棉花叶片叶绿素含量时空分布的影响[J]．西北农业学报，2007，16(1)：7-12. ZHI Jin-hu, Wu Wei-mo, Wei Chang-zhou, et al. Chlorophyll space-time distributing of cotton leaves by water and nitrogen in filmed field by drip irrigation[J]. Acta Agriculture Boreali-occidentalis Sinica,2007, 16(1): 7-12. [3] 何 萍，金继运，林 葆．氮肥用量对春玉米叶片衰老的影响及其机理研究[J]．中国农业科学，1998，31(3)：66-71. HE Ping, Jing Ji-yun, Lin Bao. The study of the effect of nitrogen fertilizer application on spring maize leaves[J]. China Agricultural Science,1998, 31(3): 66-71. [4] 邬飞波，许馥华，金球群．利用叶绿素计对短季棉氮素营养诊断的初步研究[J]．作物学报, 1999，25(4)：483-488.？ WU Fei-bo, Xu Fu-hua, Jin Qiu-qun. The study of diagnosis of nitrogen nutrition of Short Season Cotton with chlorophyll meter[J]. Acta Agronomica Sinica, 1999, 25(4): 483-488. [5] 艾天成，李方敏，周治安，等．作物叶片叶绿素含量与SPAD值相关性研究[J]．湖北农学院报，2000，20(1)：6-8. AI Tian-cheng, Li Fang-min, Zhou Zhi-an, et al. The research of the relation between the chlorophyll content and the SPAD value on crop leaves[J]. Acta？ Hubei Agricultural Sinica, 2000, 20(1):6-8. [6] 陈 防，鲁剑巍．SPAD-502叶绿素计在作物营养快速诊断上的应用初报[J]．湖北农业科学，1996(2)：31-34.？ CHEN Fang, Lu Jian-wei. The application of diagnosis of crop with chlorophyll meter-502[J]. Acta？ Agriculture？ Hubei Agricultural Science, 1996(2): 31-34. [7] 张金恒，王 珂，王人潮，等．叶绿素计SPAD-502在水稻氮索营养诊断中的应用[J]．西北农林科技大学学报，2003，31(2)： 177-180.？ ZHANG Jin-heng, Wang Ke, Wang Ren-chao, et al. The application of diagnosis of rice with chlorophyll meter-502[J]. Journal of Northwest University, 2003, 31(2):177-180. [8] WESTCOTT M P, Wraith J M. Correlation of leaf chlorophyll readings and stem nitrate concentrations in peppermint[J]. Commum Soil Sci Plant Anal, 1995,26 (9/10): 1481-1490. [9] FOX R H, Piekielek W P, Macneal K M. Using a chlorophyll meter to predict nitrogen fertilizer needs of winter wheat[J]. Commun Soil Sci Plant Anal, 1994, 25: 171-181. [10] MARKUS L, Katharina S, Hans S．Vertical leaf nitrogen distribution in relation to nitrogen status in grassland plants[J]. Annals of Botany, 2003, 92: 679-688．？ [11] 马宗斌，房卫平，谢德意，等．氮肥和DPC用量对棉花叶片叶绿素含量的SPAD值的影响[J]．棉花学报，2009，21（3）：224-229.MA Zong-bin, Fang Wei-ping, Xie De-yi, et al. Effects of nitrogen application rates and DPC sparing doses on content of chlorophyll and SPAD value in leaf of cotton( Gossypium hirsutum L.)[J]．Cotton Science, 2009, 21(3): 224-229.？
