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在大米中检测棕色,尼拉帕尔瓦塔卢根斯 (Nilaparvata lugens (Stål)) 损害,使用超谱遥感

Eere Vidya Madhuri¹, Rabi N Sahoo², Selvaprakash Ramalingam²

¹Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi, India.

Archives of insect biochemistry and physiology

|February 18, 2025

概括

遥感通过分析光谱反射变化,有效地检测到大米中的棕色虫 (BPH) 感染. 可见和近红外区域的特定波长与BPH严重程度相关,有助于早期应激管理.

科学领域:

农业遥感农业遥感
植物病理学植物病理学
频谱学是一种光谱学.

背景情况:

棕色虫 (BPH) 侵袭导致大米产量大幅下降.
检测BPH的传统方法往往是劳动密集型的,可能会错过早期感染.
遥感提供了一种非破坏性的实时方法来监测作物健康和压力.

研究的目的:

在不同程度的BPH感染下,描述米的光谱反射率.
为了识别不同大米品种中对BPH损伤敏感的特定波长.
评估遥感的潜力,以早期检测和评估大米BPH的严重程度.

主要方法:

在三个大米品种 (普萨巴斯马蒂-1509,普萨巴斯马蒂-1121,TN-1) 进行了光谱反射度测量,这些大米品种处于不同的BPH虫感染水平 (0-200个虫).
在感染后20天和40天 (DAI) 进行了测量.
分析包括检查可见,近红外 (NIR) 和短波红外 (SWIR) 区域的反射变化,并计算光谱特征的第一个导数.

主要成果:

在所有品种的健康和BPH感染的米植物之间观察到明显的光谱反射模式变化.
特定的波长 (470,660,750,1800,1915纳米) 显示出与BPH严重程度有很强的相关性 (>0.8).
反射率的第一个导数与绿色 (500-540 nm) 和红色边缘 (680-760 nm) 区域的BPH严重程度密切相关,随着感染的增加,红色边缘幅度下降.

结论:

可见和近红外光谱区域对BPH感染敏感,可以用于评估损伤严重程度.
遥感技术,特别是分析特定频段及其衍生物的光谱特征,对在大米中早期发现和管理BPH充满希望.
这种方法可以支持用于大米生产的精准农业战略.

关键词:

棕色的植物跳棕色的植物跳红色边缘值是指红色边缘值.远程传感是一种遥感技术.米米饭米饭米饭米饭.频谱的签名频谱的签名

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