湖北农业科学 ›› 2020, Vol. 59 ›› Issue (17): 19-24.doi: 10.14088/j.cnki.issn0439-8114.2020.17.004

• 育种·栽培 • 上一篇    下一篇

不同生育期水稻叶片SPAD值与氮素指标相关关系

陈秋玉1, 黄影华1, 张华杰1,2, 周丽燕1, 赵丽君1, 张善炫1, 夏丽莎1, 洪瑞霞1, 李艳大3, 陈青春1   

  1. 1.仲恺农业工程学院农业与生物学院,广州 510225;
    2.华南农业大学农学院,广州 510642;
    3.江西省农业科学院农业工程研究所,南昌 330200
  • 收稿日期:2020-01-02 发布日期:2020-10-23
  • 通讯作者: 陈青春,男,江苏连云港人,副教授,博士,主要从事作物精确管理与资源高效利用研究,(电话)15818115414(电子信箱)chenqingchun0414@163.com。
  • 作者简介:陈秋玉(1996-),女,广东汕头人,本科,研究方向为种子科学与工程,(电话)13632273200(电子信箱)2227413875@qq.com。
  • 基金资助:
    国家重点研发计划项目(2016YFD0300608; 2018YFD020030610)

Correlation between SPAD Value and nitrogen indicators in rice leaves at different growth stages

CHEN Qiu-yu1, HUANG Ying-hua1, ZHANG Hua-jie1,2, ZHOU Li-yan1, ZHAO Li-jun1, ZHANG Shan-xuan1, XIA Li-sha1, HONG Rui-xia1, LI Yan-da3, CHEN Qing-chun1   

  1. 1. College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China;
    2. College of Agronomy, South China Agricultural University, Guangzhou 510642, China;
    3. Institute of Agricultural Engineering, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
  • Received:2020-01-02 Published:2020-10-23

摘要: 为明确不同氮肥用量下各生育期水稻(Oryza sativa L. )叶片平均SPAD值与地上部分含氮量、氮积累量的相关关系,试验设置了不同氮肥梯度下随机区组栽培试验。结果表明,水稻叶片上、中、下3个部位的SPAD值变化趋势相近,与平均SPAD值相似,从分蘖期到黄熟期SPAD值逐渐减少。在水稻生长周期中,从分蘖期到黄熟期水稻叶片、茎的含氮量逐渐减少。在水稻全生育期,叶片平均SPAD值与茎、叶的含氮量均具有极显著的正相关关系(P<0.01),故可以将水稻叶片SPAD值作为调节水稻施氮量的相关依据。

关键词: 水稻(Oryza sativa L. ), 叶片SPAD值, 含氮量, 氮积累量

Abstract: In order to clarify the correlation between the average SPAD value of rice (Oryza sativa L. ) leaves at different growth stages and the nitrogen content, accumulation of aboveground parts under condition of different amount of nitrogen fertilizer, a randomized block cultivation experiment under different nitrogen fertilizer levels was conducted. The results showed that the change trend of SPAD values measured in the upper, middle and lower parts of rice leaves was similar to the average SPAD values, and the SPAD values gradually decreased from tillering stage to yellow maturity stage. During the rice growth cycle, the nitrogen content of rice leaves and stems decreased gradually from tillering stage to yellow maturity stage, and the difference of nitrogen content increased with the increase of nitrogen application. During the whole growth period of rice, the average SPAD value of leaves was positively correlated with nitrogen content of stems and leaves(P < 0.01). Therefore, the SPAD value of rice leaves can be used as a basis for regulating nitrogen application.

Key words: rice(Oryza sativa L.), SPAD value, nitrogen content, nitrogen accumulation

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