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中国农学通报 ›› 2018, Vol. 34 ›› Issue (25): 14-20.doi: 10.11924/j.issn.1000-6850.casb17070017

所属专题: 油料作物 园艺

• 农学 农业基础科学 • 上一篇    下一篇

不同氮肥用量下甘蓝型油菜冠层反射光谱与叶绿素含量间定量关系研究

程潜,李斌,张振乾   

  1. 湖南农业大学农学院,湖南省长沙市湖南农业大学农学院,湖南省长沙市湖南农业大学农学院
  • 收稿日期:2017-07-04 修回日期:2017-10-18 接受日期:2017-10-25 出版日期:2018-09-07 发布日期:2018-09-07
  • 通讯作者: 张振乾
  • 基金资助:
    湖南省省长项目“油菜早熟品种选育和机械化生产技术研究示范”(湘财农指[2016]114 号);湖南省科技重大专项“高油酸油菜产业化发展 关键技术研究与示范”(2014FJ1006)。

Brassica napus Under Different Nitrogen Application Rates: Quantitative Relationship Between Canopy Reflectance Spectra and Chlorophyll Content

  • Received:2017-07-04 Revised:2017-10-18 Accepted:2017-10-25 Online:2018-09-07 Published:2018-09-07

摘要: 本研究以早熟甘蓝型油菜‘420’品种为研究对象,分别于蕾薹期、花期和成熟期测定不同氮肥条件下冠层反射高光谱和叶绿素a、b的含量,研究光谱与两者之间的关系。结果表明:不同氮肥条件下,油菜冠层的反射光谱都具有相同的变化趋势,光谱参数与叶绿素含量表现出都表现出极显著的正相关关系,提取的植被指数以及从中拟合的函数模型的决定系数也比较高。本研究有较好的预测精度,可为油菜品质育种研究和区域尺度油菜生长的快速、无损遥感监测提供参考。

关键词: 工夫红茶, 工夫红茶, 品质成分, 感官审评, 动态聚类分析, 发酵适度

Abstract: The paper aims to measure the canopy hyperspectral reflectance and the content of chlorophyll a and b at the stage of budding, flowering and maturity under different nitrogen levels respectively and studied the relationship between the spectra and the content of chlorophyll, by taking the early maturing rapeseed variety ‘420’ as raw materials. The results showed that: under different nitrogen levels, all of the rape canopy reflectance spectra had the same trend, the parameters of chlorophyll content and spectrum showed a significant positive correlation between the vegetation index and coefficient of extraction, and the extracted vegetation index and the coefficient of determination from the fitted function model were also relatively high. There has a good prediction accuracy in this study which can be used as a reference for rapid and nondestructive remote sensing monitoring of quality breeding and regional scale growth of rape.

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