受褐飞虱破坏的水稻光谱特性研究

Study on Spectral Characteristics of the Damaged Rice by BPHs

[目的]利用光谱分析方法建立光谱与水稻褐飞虱虫量的相关关系,并利用该模型对褐飞虱虫量进行预测。[方法]利用波段范围在350～1 050 nm以及分辨率3 nm的ASD光谱仪,分别对健康水稻和受水稻褐飞虱(BPH,Nilaparvata lugens)破坏的受损水稻进行了光谱特性测定。利用光谱特性分析方法对水稻褐飞虱破坏的受损水稻光谱特性进行了分析,并与水稻褐飞虱虫量建立了显著性相关估算模型。[结果]所建模型的预测精度在66.8%～81.2%,可有效开展水稻褐飞虱虫量的预测。[结论]利用高光谱可以很好地预测褐飞虱虫量。

[Objective] The linear model for forecasting the occurrence number of BPHs were built using spectral band and red edge,and use the model to forecast the number of BPHs.[Method] Using ASD spectrometer which the measured spectral region ranged from 350 nm to 1 050 nm,at resolution of 3 nm to measure spectral characteristics of the healthy rice and the damaged rice by BPHs.Using the spectrum of the rice to analyze the spectral characteristics of the damaged rice by BPHs.And established a significant negative correlation between the number of BPHs and the spectral characteristics of the damaged rice by BPHs.[Result] The accuracy of the model were 66.8%-81.2%,the model was efficient for forecasting the number of BPHs.[Conclusion] Hyper spectral can be efficient for forecasting the number of BPHs.