利用SPAD-502对高山杜鹃氮素营养的快速诊断研究  

Rapid Nitrogen Diagnosis for Rhododendron‘Furnivall's Daughter' Using SPAD-502

作　　者：蔡艳飞[1,2,3,4] 李世峰[1,2,3,4] 李树发[1,2,3,4] 解玮佳[1,2,3,4] 宋杰[1,2,3,4] 

机构地区：[1]国家观赏园艺工程技术研究中心,云南昆明650205 [2]云南省农业科学院花卉研究所,云南昆明650205 [3]云南省花卉育种重点实验室,云南昆明650205 [4]云南省花卉工程中心,云南昆明650205

出　　处：《西部林业科学》2014年第1期40-46,共7页Journal of West China Forestry Science

基　　金：云南省花卉育种重点实验室开放基金(FKL-201003);云南省科技计划项目(2011EB110)

摘　　要：利用SPAD-502型叶绿素计测定了不同氮水平下高山杜鹃不同生长时期、不同叶位的SPAD值,分析SPAD值与叶绿素含量和叶片总氮含量的关系。结果表明,不同生长期第1轮和第2轮叶片的SPAD值与叶绿素含量均呈显著线性正相关,其中新梢生长期第1轮叶片的SPAD值与叶绿素含量的相关性最强,而叶绿素各参数中对SPAD值影响最大的是叶绿素b的含量。在不同氮水平下,SPAD值及相对叶色差与单位干重的总氮含量具有显著线性正相关关系,SPAD值的变化能够反映60%的单位干重叶氮含量的变化。因此,可以利用SPAD-502型叶绿素计对高山杜鹃进行快速、无损的氮素营养诊断。Leaf chlorophyll meter readings （SPAD） of Rhododendron‘Furnivall’s Daughter’under different nitro-gen levels at different growth stages were analyzed by SPAD-502.The relationship between SPAD and content of leaf chlorophyll , and the relationship between SPAD and nitrogen content in leaf were analyzed . The results showed that despite of growth stage , the SPAD of the leaves at different positions were positively correlated with the contents of chlorophyll .Among which , the SPAD of the first whorle leaf and the content of chlorophyll was the most correlated , among different parameters of chlorophyll , chlorophyll b had the most significant effect on SPAD . Under different nitrogen levels , SPAD values and relative leaf color （ RSPAD ） showed significant positive linear correlations with total nitrogen content per unit mass （ Nm ） . The changes of SPAD values could explain 60 %changes of Nm .The study results showed that it was feasible conduct rapid and non-invasive nitrogen diagnosis on Rhododendron by using SPAD-502 .

关 键 词：高山杜鹃 氮 SPAD-502 营养 诊断 

分 类 号：TH79[机械工程—仪器科学与技术]