Monitoring Stripe Rust of Winter Wheat Using PHI Based on Sensitive Bands

文献类型： 外文期刊

第一作者： Luo Ju-hua

作者： Luo Ju-hua;Huang Wen-jiang;Gu Xiao-he;Ji Ning;Ma Li;Song Xiao-yu;Li Wei-guo;Luo Ju-hua;Wei Zhao-ling

作者机构：

关键词： Pushbroom imaging spectrometer (PHI); Sensitive bands; Stripe rust; Disease indexes

期刊名称：SPECTROSCOPY AND SPECTRAL ANALYSIS （ 影响因子：0.589； 五年影响因子：0.504 ）

ISSN： 1000-0593

年卷期： 2010 年 30 卷 1 期

页码：

收录情况： SCI

摘要： Forty six points representing different severity degree of stripe rust were established in winter wheat field. The canopy reflectance was collected by an ASD hand-held spectrometer at each point. Meanwhile, the diseases index was investigated. These data were used for the following analysis. Firstly, the relationships between diseases index and reflectance of bands in the range of 300-1500 nm were analyzed. The sensitive bands were selected for stripe rust detecting. Secondly, considering the character of PHI image, red bands (620-718 nm) and near infrared bands (770-805 nm) were assigned as the best bands. Finally, the mean reflectance of red bands (620-718 nm) and near infrared bands (770-805 nm) was calculated respectively to construct the reverse model with the observed diseases indexes: DI=19.241R(1)-2.20667 R-2+12.2744. With this model, the severity degree of stripe rust of winter wheat was monitored successfully in PHI image.

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