Sun, Hai-chao; Lu, Dao-wen; Qi, Guo-bing; Wang, Jin-hong; … - In: Asian Agricultural Research 2 (2010) 05
production of the main grain crops, covering the planting structure, seed structure and the trend of the per unit yields of … comparative advantage, the efficient comparative advantage and the comprehensive comparative advantages of the main grain crops … the main grain crops in Henan Province, only the wheat and the corn have comparative advantages; rice, corn, soybean and …