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, Vol. 20 ›› Issue (5) : 697-705.
Main Grain Crops Structural Change and Its Climate Background in Heilongjiang Province during the Past Two Decades
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