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棉红蜘蛛(亚纲:叶螨科)是许多农业系统的重要害虫,现已经发现在玉米、棉花、高粱中造成过经济损失。成年红蜘蛛叶螨的生物测定指出,Temprano·(阿维菌素)对于成年叶螨来说是毒性最强的杀螨药。从航空应用的角度来看,还需要更多的研究来确定杀螨药的航空应用参数。本研究的目的是探索感染不同叶螨密度及用不同浓度杀螨药处理的棉花植株的光谱响应。结果显示,棉花植物感染的螨虫密度不同,光谱特征明显不同。通过分析五种不同Temprano处理(对照,1/8,1/4,1/2,1)的棉花植株后发现,光谱反射率曲线明显不同。550 nm、560 nm、680 nm和740 nm四种波长对检测不同Temprano处理的叶螨感染的棉花植株光谱差异非常重要。归一化植被指数图像(NDVI)能够检测出棉花植物损伤的级别。1/2 Temprano处理的样本和1 Temprano处理的样本效果一样。本研究的发现可能会有助于降低用于作物生产和保护的杀螨药的成本和数量。
Cotton spider mite (Suborder: Tetranychidae) is an important pest of many agricultural systems and has now been found to cause economic losses in corn, cotton and sorghum. Bioassay of Adult Spider Mite spider mites Tempura (abamectin) is the most toxic acaricide for adult spider mites. From an aviation application perspective, more research is needed to determine aeronautical application parameters for acaricidal agents. The purpose of this study was to explore the spectral response of cotton plants infected with different leaf mite densities and treated with different concentrations of acaricides. The results showed that cotton plants infected with different density mites, significantly different spectral characteristics. Spectral reflectance curves were significantly different after analysis of five different cotton plants treated with Temprano (control, 1/8, 1/4, 1/2, 1). The four wavelengths of 550 nm, 560 nm, 680 nm and 740 nm are very important for the detection of spider mite-infected cotton plants with different Temprano treatments. Normalized Vegetation Index Images (NDVI) can detect levels of cotton plant damage. Samples processed at 1/2 Temprano behave identically to samples processed at 1 Temprano. The findings of this study may help to reduce the costs and quantities of acaricides used in crop production and conservation.