The purpose of this study is to present a method of estimating rice yield from remotely sensed data

which offers a biological based. The principle and technique of the method were described in the former paper （No. 4

Vol. 3

1988. "Remote sensing of Environment CHINA"）. The technique of estimating rice yield with Landsat images is presented here. Firstly

the vajues of leaf area index （LAI） at ten sites in each experimental field are estimated with the data of MSS spectral reflectance using the Suits method

and the mean value of leaf area index （LAI） of each field （about 20-40 ha.） is obtained. Secondly

a relationship between PV1 obtained from Landsat images and LAI is derived. The leaf area index （LAI） of each field in whole study region is estimated using this relation. Thirdly

the rice yield can be estimated from the LAI of each field using the method presented in the former paper. At the end

some aspects of effecting the accuracy of the estimated yield from this method are discussed.