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水稻叶片上下表面反射率差异及其与氮素状况的关系 被引量:2

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摘要 在田间条件下测定了5个氮素水平处理的水稻叶片在分蘖、孕穗和抽穗期的上表面反射率和下表面反射率,结果表明:各生育期水稻叶片在可见光和近红外区域的下表面反射率均大于上表面反射率(绝对差值一般小于2%),上下表面反射率差值大小与供氮水平间无显著相关性,但在近红外区域这种差值随着生育期而降低。与上表面反射率相比,下表面反射率与叶片氮素和叶绿素含量间具有同样高的相关性,因此水稻下表面反射率也可用于估计叶片氮素和叶绿素含量。下表面中脉向外凸出及上下表皮细胞大小与排列的差异可能是引起水稻叶片上下表面反射差异的主要原因。
出处 《农业工程学报》 CSCD 北大核心 2002年第5期34-38,共5页 Transactions of the Chinese Society of Agricultural Engineering
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同被引文献29

  • 1吕雄杰,潘剑君,张佳宝.水稻冠层光谱反射特征及其与叶面积指数关系研究[J].土壤,2004,36(6):648-653. 被引量:9
  • 2李佛琳,赵春江,王纪华,刘良云,曹卫星.烤烟鲜叶组织结构、近红外反射率及其影响因素的研究[J].西北植物学报,2006,26(10):2104-2109. 被引量:4
  • 3王庆菊,李晓磊,王磊,陈学森,沈向.桃、李属红叶树种叶片光合特性[J].林业科学,2007,43(6):32-37. 被引量:15
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