中文摘要：

应用WinFolia叶面图像分析系统测量病虫害为害的叶片总面积及受害面积等多个参数．该方法具备计算速度快、数据准确、效率高、操作方便、精度高等优点，并可同时获得多个叶片的数据，对于不规则叶片更显其优越性，在病虫害监测和损失评估中具备更良好的应用前景．

英文摘要：

WinFolia leaf analysis system was adopted to measure leaf image parameters including total leaf area and damaged leaf area on damaged leaves by. pests and diseases. WinFolia-based image analysis of damaged plant leaves had the following advantages： （ 1 ） Fast calculation speed, precise data, high efficiency, easy operation and high accuracy ; （2） Suitable for any destructive measurements of leaves, especially for irregular leaves; （3） lower labor costs and lower subjective errors; （4） besides leaf area, other parameters including leaf length, leaf width, leaf perimeter and the ratio of damage leaf area could be measured ; （5） The data of many leaves could be obtained at once. WinFolia system should have a better perspective in the monitoring and loss assessment of diseases and pests.