A HAND-HELD RED-INFRARED RADIOMETER FOR MEASURING RADIATION INTERCEPTION BY CROP CANOPIES

被引：6

作者：

RAO, RCN ^{[1
]}

WILLIAMS, JH ^{[1
]}

RAO, VM ^{[1
]}

WADIA, KDR ^{[1
]}

机构：

[1] INT CROPS RES INST SEMI ARID TROP,SAHELIAN CTR,NIAMEY,NIGER

来源：

FIELD CROPS RESEARCH | 1992年 / 29卷 / 04期

关键词：

D O I：

10.1016/0378-4290(92)90035-8

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

A simple and portable two-band radiometer to measure simultaneously, reflectance of red (r) and near infrared (ir) radiation from canopies of peanut (Arachis hypogaea L.) is described. A strong linear relationship (r2=0.94) was observed between the normalised reflectance ratio (NR) calculated from r and ir reflected, and the fraction of incident photosynthetically active radiation (PAR) intercepted by peanut canopies up to a leaf area index of 3.0. The importance of and scope for measurements on radiation interception in crop improvement programs is discussed.

引用

页码：353 / 360

页数：8

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