EN中文
Main Grain Crops Structural Change and Its Climate Background in Heilongjiang Province during the Past Two Decades
YUN Ya-ru, FANG Xiu-qi, WANG Yuan, TAO Jun-de, QIAO Dian-feng
JOURNAL OF NATURAL RESOURCES . 2005, (5): 697 -705 .  DOI: 10.11849/zrzyxb.2005.05.009