新疆农业科学2024，Vol.61Issue(4)：845-851,7.DOI:10.6048/j.issn.1001-4330.2024.04.007
基于无人机多光谱NDVI值估测玉米产量
Research of maize yield estimation based on unmanned aerial vehicle multispectral NDVI
摘要
Abstract
[Objective]To explore the normalized difference vegetation index,an estimation model for maize yield,this study has provided a theoretical basis for the multispectral prediction of maize yield by field UAV.[Methods]Xinjiang eighteen spring-sown maize was taken as the research object,a multispectral im-age of the flowering period was obtained,and the actual spectral reflectance of the experimental area was ob-tained after radiometric correction,atmospheric correction,establishment of mask,extraction of NDVI map,and calculation of vegetation coverage,so as to obtain the actual value of normalized vegetation index.In addi-tion to that,the NDVI value was fitted to the measured yield in the field.[Results]The power functions Y=23,411.46-10,997.99/X(R2=0.488,6),polynomial functions Y=39,003.00-117,963.03X+103,130.25X2(R2=0.562,0),using partial least squares regression.The result was a linear function Y=24,458.22X-9,620.55(R2=0.722,2).[Conclusion]The results show that it has a certain correlation with maize yield,and the linear function model of NDVI value and yield during the critical period of maize growth.关键词
玉米/产量/归一化植被指数(NDVI)/偏最小二乘回归(PLSR)Key words
maize/yield/normalized vegetation index(NDVI)/partial least squares regression(PLSR)分类
农业科技引用本文复制引用
张磊,陈勋基,翟云龙,姚梦瑶,刘志刚,李娟,杨洋,蔡大润,陈果,李波,李晓荣..基于无人机多光谱NDVI值估测玉米产量[J].新疆农业科学,2024,61(4):845-851,7.基金项目
国家自然科学基金项目(32160440) （32160440）
玛纳斯县国家级杂交玉米种子生产基地建设项目(MNSZZDX-2021-01) （MNSZZDX-2021-01）
新疆生物育种协同创新平台建设项目(202114863) National Natural Science Foundation of China(32160440) （202114863）
Manas County National Hybrid Maize Seed Production Base Construc-tion Project(MNSZZDX-2021-01) （MNSZZDX-2021-01）
Xinjiang Biological Breeding Collaborative Innovation Platform Construction Project(202114863) （202114863）
