期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Estimating Canopy Nitrogen Contents of an Apple Tree Using Hyperspectral Remote Sensing 被引量:1
1
作者 Xicun ZHU Lulu GAO +2 位作者 xianyi fang Gengxing ZHAO Ling WANG 《遥感科学(中英文版)》 2016年第2期42-50,共9页
Estimating an apple tree canopy nitrogen contents using hyperspectral techniques is important in theoretical and realistic significance for fertilization and management.Taking 80 Fuji apple trees at the early fruiting... Estimating an apple tree canopy nitrogen contents using hyperspectral techniques is important in theoretical and realistic significance for fertilization and management.Taking 80 Fuji apple trees at the early fruiting stage as the research objects,the hyperspectral characteristics of the apple canopy were analyzed systematically.The apple canopy hyperspectral and the canopy nitrogen contents were measured respectively.The canopy hyperspectral characteristics under different nitrogen contents were analyzed and selected the sensitive wave bands.The apple canopy nitrogen content monitoring models were established by using multiple regression method,robust regression and BP neural network method.The results showed that the canopy hyperspectral reflectance had obvious differences under different nitrogen contents.The sensitive bands concentrate on 724~1136 nm.Estimation models based on hyperspectral indices are not ideal.Models based on robust regression(M regression)and BP neural network are better than multiple statistical model,and the accuracy of the BP neural network monitoring model is the best.The results of the study provide a certain reference for estimating apple nutrition using hyperspectral technology. 展开更多
关键词 APPLE Ttrees CANOPY NITROGEN CONTENTS Hyperspectrum ESTIMATING MODEL
下载PDF
Hyperspectral Characteristics of Apple Leaves Based on Different Disease Stress 被引量:1
2
作者 xianyi fang Xicun Zhu +3 位作者 Zhuoyuan Wang Gengxing Zhao Yuanmao Jiang Yan'an Wang 《遥感科学(中英文版)》 2014年第3期14-21,共8页
关键词 苹果叶片 光谱特性 高光谱反射率 光谱反射特性 诊断模型 LOGIT模型 严重程度 红外区域
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部