作物病虫害遥感监测研究进展

近年来,随着信息技术的迅速发展,遥感作为一种快速监测手段已经被运用到作物病虫害监测中.本文阐述了作物病虫害遥感监测的基本原理及特点,重点介绍了国内外在其技术方法上的研究进展,提出了生产应用中的技术流程.进一步分析了当前本领域研究中的难点,展望了其应用前景,以期为棉花病虫害遥感监测研究提供借鉴与参考.

Studies of Remote Sensing on Monitoring Crop Diseases and Pests

With the rapid development of information technology,remote sensing,as a fast monitoring means,has been used in monitoring crop diseases and pests in recent years.Some domestic and overseas scholars have had some bold experiments and made a great deal of achievements.Basic theorems of remote sensing of monitoring crop diseases and pests were elaborated in this thesis,meanwhile its characteristics were summarized,and especially recent progresses,then their application prospect was analyzed.The technical methods mostly could be divided into seven parts according to lots of experiments: analytic technology of spectral reflectance,of regression mode,of vegetation index,of derivative spectra,of basic variable of spectral site,of remote sensing image and of multi-angular remote sensing.The critical technology step of monitoring for diseases and pests on crop was introduced.At the same time,some difficulties were analyzed,and progress in this field was looked into as well.With regard to the prospect of remote sensing for monitoring crop diseases and pests,four points were put forward: 1)Basic principle of monitoring crop diseases and pests by near ground remote sensing should be profoundly developed;2)Lots of experiments of characteristic relation between remote sensing images and crop pests should be studied;3)new methods of monitoring crop diseases and pests should be explored;4)Under the real-time monitoring by remote sensing condition,the information system platform for integrated pest management on plant should be established.