接种不同浓度松材线虫的黑松光谱学特征分析  

Analysis of Spectral Characteristics of Pinus thunbergii Inoculated with Pine Wood Nematode

作　　者：马跃[1] 吕全[2] 赵相涛[1] 何邦令[1] 刘会香[1] 张星耀[2] 

机构地区：[1]山东农业大学植物保护学院/山东省林业有害生物防控工程技术研究中心,山东泰安271018 [2]国家林业局森林保护学重点实验室/中国林业科学院森林生态环境与保护研究所,北京100091

出　　处：《山东农业科学》2012年第11期12-16,共5页Shandong Agricultural Sciences

基　　金：国家林业局公益性行业专项"重大森林病虫灾害防控技术的关键理论基础(201204501)";"山东省财政厅项目"松材线虫病的综合防控技术研究";山东省科技厅项目"泰山重大林业有害生物的预警技术研究(2005GG3209144)"资助

摘　　要：利用光谱学进行植物病害的早期诊断是近年来植物病害监测预警研究的一个热点。本试验采用人工接种不同浓度松材线虫的方法,研究了野外健康黑松不同发病阶段黑松松针的反射光谱特征曲线,分析了多个光谱特征参数。结果表明:绿光波段(500～560 nm)和近红外波段(750～900 nm)反射光谱曲线对松树发病程度有一定的指示作用;红边(680～780 nm)位置蓝移、绿峰(510～580 nm)反射高度及红谷(640～700 nm)吸收深度降低、红边斜率减小等光谱特征参数的变化能够很好地反映松树的感病情况。本研究结果可为利用高光谱遥感技术进行松材线虫病监测与预警提供理论依据。Using spectroscopy to diagnose plant diseases is a research focus in plant disease monitoring and early warning in recent years. In this paper, the spectral characteristic curve of Pinus thunbergii needle was studied after artificial inoculation of different concentrations of pine wood nematode, and the multiple spectral characteristic parameters were analyzed. The results showed that the green and near- infrared reflectance spectral curves could indicate the pine disease severity. The decline of spectral parameters such as red edge position blue shift, green peak height and red band depth, and the decrease of red edge slope could reflect well the disease situation of pine. All the results above provided a theoretical basis for the pine wilt disease monitoring and early warning by using hyperspectral remote sensing technology.

关 键 词：松材线虫 黑松 光谱分析 光谱特征参数 

分 类 号：S712[农业科学—林学]