Predicting Winter Wheat Grain Quality Using Hyperspectral Data Based On Plant Nitrogen Status
文献类型: 外文期刊
作者: Wang, Huifang 1 ; Wang, Jihua 1 ; Feng, Meichen 3 ; Wang, Qian 1 ; Huang, Wenjiang 1 ; Shi, Zongtao 3 ;
作者机构: 1.Beijing Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China
2.Zhejiang Univ, Inst Agr Remote Sensing & Informat Syst Applicat, Hangzhou 310029, Peoples R China
3.Shanxi Agr Univ, Coll Agr, Taigu 030801, Peoples R China
关键词: winter wheat;grain quality content;canopy reflectance;leaf & stem nitrogen content
期刊名称:NATURAL RESOURCES AND SUSTAINABLE DEVELOPMENT II, PTS 1-4
ISSN: 1022-6680
年卷期: 2012 年 524-527 卷
页码:
收录情况: SCI
摘要: Quality of winter wheat from hyperspectral data would provide opportunities to manage grain harvest differently, and to maximize output by adjusting input in fields. In this study, two varieties winter wheat as the object, hyperspectral data were utilized to predict grain quality. Firstly, the leaf and stem nitrogen content at winter wheat anthesis stage was proved to be signification correctly with crude content and wet gluten. And the leaf relatedcoefficient more than stem at the anthesis. Then, spectral indices significantly correlated to plant nitrogen content at anthesis stage were potential indicators for grain qualities. The vegetation index, VI derived from the canopy spectral reflectance was signification correlated to the leaf nitrogen content at anthesis stage, and highly significantly correlated to the leaf nitrogen content. Based on above analysis, the predict grain quality model were build and the related coefficient were 0.86, 0.68, 0.84, 0.58 which were reached a very significant. The result demonstrated the model based on SIPI and RVI to predict different cultivars wheat grain quality were practical and feasible.
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