摘要
本文用室内光谱分析法找出了苹果害螨为害等级与680nm/800nm这一比值光谱指数的定量关系,并证明这种害虫在为害苹果树时对树冠没有方位性选择。这种病虫害为害与光谱相关关系的研究结果可使为害等级鉴别客观化和定量化,并为病虫害的遥感监测提供了依据。
A laboratorial spectrum assay for studying the quantity relation-
ship between the damage levels of mite pests to apple leaves and the
reflectance ratio at 680 nm/800 nm,the optimum spectrum index,was
developed.The result showed that there was no directional selection of
this mite pests on the canopy of apple tree.It was indicated that the
spectrum assay is more objective and quantitative than visual resolu-
tion)and can provide scientific data for the remote sensing of plant
diseases and insect pests.
出处
《植物保护学报》
CAS
CSCD
北大核心
1991年第3期221-224,共4页
Journal of Plant Protection
基金
国家自然科学基金
关键词
苹果
害螨
叶片
光谱指数
遥感
spectrum index
remote sensing
mite pests
