摘要
采用CCN6000水稻叶片氮素快速测定仪,以籼型常规早稻中早39为材料,研究了水稻叶片氮含量化学分析值、CCN值及SPAD值的关系。结果表明,早稻倒1叶叶片CCN值与含氮量呈近1.0∶1.0的关系,倒2叶叶片CCN值与含氮量呈近1.0∶1.1的关系,倒3叶叶片CCN值与含氮量呈近1.0∶1.2的关系,倒1叶CCN值与含氮量之间最为吻合,CCN值与SPAD值显著相关。水稻孕穗期叶片含氮量为倒3叶>倒2叶>倒1叶。研究表明,CCN值可以作为叶片含氮量的快速诊断依据。
The relationship of rice leaf nitrogen content, SPAD value and CCN value were studied in the experiment, with rice leaf nitrogen rapid determination instrument of CCN6000, early season indica rice zhongzao 39 as material. The results showed that the value measuring by CCN6000 and chemical analysis was similar when the flag leaf was subjected to analyzing. The leaf nitrogen content of rice leaf at panicle initiation stage from high to low was 3rd, 2nd, 1st from the top, and the correlation of the value measured by CCN6000 and SPAD were significant. With the rising of leaf position, leaf nitrogen content decreased at booting stage of rice. CCN value can be used as a basis for nondestructive and rapid determination of nitrogen content in leaves clearly.
出处
《中国稻米》
北大核心
2017年第2期18-20,共3页
China Rice
基金
现代农业产业技术体系建设专项(CARS-01-26)
国家重点研发计划项目(SQ2016ZY06003823)
关键词
水稻
含氮量
CCN600
无损检测
rice
nitrogen content
CCN6000
nondestructive and rapid determination
