CORRELATION BETWEEN VARIATIONS OF SPAD VALUE OF LEAF AT DIFFERENT POSITION AND BIOMASS OF MAIZE
TONG Shu-yuan~(1,2) SONG Feng-bin~(1*) XU Hong-wen~(1,2)(1.Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Changchun,Jinlin 130012 2.Graduate University of Chinese Academy of Sciences,Beijing 100049)
J4 . 2008, (06): 869 -874 .  DOI: 10.11869/hnxb.2008.06.0869