期刊论文、会议论文

Research of Canopy Spectral Characteristics of the Late Rice Populations with Organic Manure and Chemical Fertilizers

中文

中国稻米

1006-8082

2017

23

4

6-13

全国第十七届水稻优质高产理论与技术研讨会

2017-08-17

中国安徽合肥

10.3969/j.issn.1006-8082.2017.04.002

基金项目:湖南双季稻区水稻生长指标光谱监测技术体系的施肥应用(201303109-3);国家水稻丰产科技工程“长江中游南部(湖南)水稻丰产节水节肥技术集成与示范 ”(2013BAD07B11)

本校为第一机构

以不同施肥模式为基础,分析了晚稻群体冠层光谱反射率、一阶微分光谱和归一化光谱特征,并对叶片氮含量、氮积累量、产量、叶面积指数和叶干物质积累进行了相关性分析,构建了以高光谱特征参数为自变量的水稻氮素营养诊断模型。结果表明,叶片氮素含量与665 nm处冠层光谱反射率呈极显著相关性(p

Based on different fertilization patterns, the canopy spectral reflectance, the first derivative spectra and normalized spectral characteristics of late rice, and a correlation among leaf nitrogen content, nitrogen accumulation, yield, leaf area index and leaf dry matter accumulation were analyzed. Then the rice nitrogen nutrition diagnosis model with high spectral characteristic parameters as in-dependent variables was constructed. The results showed that: there has a great relevance between leaf nitrogen content with canopy spectral reflectan...