倒伏胁迫下玉米抽雄期叶面积密度光谱诊断
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周龙飞,顾晓鹤,成枢,杨贵军,孙乾,束美艳
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Spectral Diagnosis of Leaf Area Density of Maize at Heading Stage Under Lodging Stress
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ZHOU LongFei,GU XiaoHe,CHENG Shu,YANG GuiJun,SUN Qian,SHU MeiYan
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表2 基于光谱变换的LAD建模及验证
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Table 2 Modeling and verification of LAD based on spectral transformation
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光谱变换形式
Spectral transformation | 尺度
Scale | 模型
Model | 建模Modeling | 验证Verification | | R2 | RMSE | R2 | RMSE | | 一阶微分(R,) | | Y=196625×X407-5921573×X634-187548×X707-236231×X1130-2 | 0.653 | 1.408 | 0.823 | 1.486 | | CWT | 2 | Y=312.28×X357-5071.2×X493+710.68×X701+258.79×X760-4.1 | 0.724 | 1.219 | 0.873 | 1.143 | | 4 | Y=173.508×X365+176.319×X424+16.742×X700-49.675×X1161-3.233 | 0.703 | 1.264 | 0.884 | 1.094 | | 5 | Y=154.518×X418-5.031×X764+32.643×X913-26.993×X1451-2.034 | 0.702 | 1.266 | 0.898 | 1.016 |
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