作　　者： ; ; ;

机构地区： 华南农业大学水利与土木工程学院

出　　处： 《水资源与水工程学报》 2010年第1期34-37,共4页

摘　　要： 在甘蔗的苗期和分蘖期,用地物光谱仪对不同土壤水分状况下盆栽种植的甘蔗进行了冠层光谱反射率测试,同时测量土壤的体积含水量,采用差异显著性T检验和线性回归分析的方法对不同土壤水分处理下甘蔗苗期和分蘖期冠层光谱反射率的变化规律进行了分析研究。试验结果表明：在α=0.05显著性水平下,460 nm5、60 nm和近红外波段（760~1 200 nm）,不同土壤水分处理间甘蔗冠层光谱反射率差异显著;线性回归分析结果表明,近红外波段与460 nm、560 nm的反射率比值与土壤含水量均呈显著正相关关系,其中比值植被指数（R960/R560）与甘蔗土壤含水量呈极显著正相关关系,相关系数R2达到0.907。 The surface feature spectro meter was used to measure potted-sugarcane canopy spectral reflectance under different soil moisture in the sugarcane seedling and tillering stage,and soil volumetric water content was measured at the same time.Significant difference between T-test and linear regression analysis method was used to analyze the rate of variation of spectral reflectance under different soil moisture in the sugarcane seedling and tillering stage.The results showed that：in α=0.05,460nm,560nm and near-infrared bands（760~1200nm）,sugarcane canopy spectral reflectance was significantly different under different soil moisture.Linear regression analysis showed that the relationship between reflectance ratio of near-infrared and 460nm,560nm and soil moisture was positive correlation and the relationship between the ratio vegetation index（R960/R560）and soil moisture was significant positive correlation（R2=0.907）.

关 键 词： 甘蔗 冠层 光谱反射率 比值植被指数 土壤含水量

领　　域： [农业科学] [自动化与计算机技术] [自动化与计算机技术]