数字农科院2.0

Estimated Nitrogen Nutrition Index Based on the Hyperspectral for Wheat of Drip Irrigation under Mulch

文献类型： 外文期刊

作者： Diao Wan-ying;Li Shao-kun;Wang Ke-ru;Jin Xiu-liang;Wang Qiong;Wang Kai;Xiao Chun-hua;Li Shao-kun;Wang Ke-ru;Xiao Chun-hua;Jin Xiu-liang;Wang Fang-yong;Chen Bing

作者机构：

关键词： Wheat;Nitrogen assessment index;Partial factor productivity from applied N (PFPn);Spectral parameters

期刊名称： SPECTROSCOPY AND SPECTRAL ANALYSIS

ISSN： 1000-0593

年卷期： 2012 年 32 卷 5 期

页码：

收录情况： SCI

摘要： The accurate wheat management needs a reasonable nitrogen application, and it is one of the key measures for real-time and quantitatively monitoring of nitrogen status to gain the higher yield of wheat. In the present study, two field experiments were conducted with different nitrogen stress and wheat cultivars, the relationship was analyzed between spectral parameters and the partial factor productivity from applied N (PFPn), and the estimating model was established for PFPn in the growth stages of wheat. The result indicated that there was a highly significant correlation between the PFPn and GreenNDVI at jointing, the correlation coefficient (r) was 0.640 4, the estimating model of PFPn was established, and the root mean square errors (RMSE) was 0.459 7. The result indicated that the PFPn can be effectively estimated by using spectral parameters.

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