摘要
该文在１９８９、１９９０年田间试验的基础上，分析了玉米生长与产量的关系，重点分析了叶面积与籽粒产量的关系。根据光谱测试资料，分析了玉米生长期间其冠层在可见光和近红外波段反射享的变化、多种光谱植被指数与玉米群体叶面积系数的相关关系；针对华北地区玉米种植环境背景的复杂性，该地区的玉米遥感估产采用了从卫星总绿度值中剔除非玉米地表影响的订正方法来突出玉米信息，再用订正后的总绿度值与总产分区建立玉米遥感估产模式，从而实现玉米总产预测。经验证，预测平均误差小于５％。
An analysis of the relationships between corn growth and its yield,particularlybetween corn leaf area and grain yield was made on the basis of the field experiments inthe 1989～1990 period. Using the groud measuring spectral data from experiments ’thevariations of spectral reflectance of corn canopy in the visible and near-infrared spectrumregions ,and the correlatiOn between multi-spectr;1l vegetation index and corn group leafarea index were analysed.A method of correction for rejecting the influence of non-cornground on the vegetation index obtained frorn meteorological satellite was developed inaccordance with the complexity of corn planting environments in North China, On thebasis of stratifications of assessing the yield, a model for corn yield estimation by remotesensing has been set up and the prediction of total corn yield has also been issued. Theaverage errors of prediction are less than 5%。
出处
《应用气象学报》
CSCD
北大核心
1995年第A01期33-41,共9页
Journal of Applied Meteorological Science
基金
国家气象局气象科学基金
关键词
玉米
遥感
估产
华北地区
North China
Corn
Remote sensing
Yield estirnation。
