」 ．　 Fac ．　 Agr． ，　 Kyushu　Uriiv． ，　 46　（2） ，　 257－266　（2092） Canepy Strllcture　of　Mungbean　CempeneRt　in　Maize．mungbean Intercroppings Estimated　by　the　Stereo．image　Analysis　Methed

Among the many aspects regarding to the effective use of natural resources in inter－ eropping ， the light condition in the canopy might be an important factor due to its complicated distribution of the foliage ． For the clarifying the dijfference of the canopy structure ， which could be related to radiative characteristics ， the canopy geometry of inuRgbeaR component was esも㎞aもe（i by the sもereo一圭mage aRalysis搬e激od（S1A瓢） ． The蟄vesも三gatioR was conducもed熱 も熱ree cr◎ひP㎏sysもe澱s ， i．e．◎聡e r◎w獄掻㎎bea捻漁もercr◎ひP㎏be癬ee薮撮a重ze r◎ws，もw◎rows 搬澱9bea澄雛ercrOPP蟄g a慮a斑慧㎎bea難搬◇難◇¢二軍e ． Fksいhe c◎ord勲もe§of four p◎雛s o数 a leafiet ， wh韮chδeもer懸鍛e嶽e至。鼓9－akd shorレaxe＄o蹴 ， were measured by the aRa歪ysis Qf sもere◎漁agesもake難byもw◎d響ta玉cameras 。 Then the c◎◎rd睡ates were usedも◎caicuぬもe a貧 area oゴa玉ea難eもandも 。 esも㎞ate the az㎞uth angle and zer薮th angle of iも ． EvenもuaHyもhe char－ acteristie of foliage geometry in intercrepping system was described by Mustrating the spatial distributions of the leaf area ， the azimuth angle and the zenith angle ． The leaf area and its venical distribution obtained by the SIAM were so fitted with those measured by the clipping rnethod ． These results showed that the Slnm might be applicable to investigate the canopy structure