7LIU Yan1,NING Tang-yuan1,ZHOU Xun-bo1,2 1.State Key Laboratory of Crop Biology,Shandong Key Laboratory of Crop Biology,Shandong Agricultural University,Taian 271018,China,2.Key Laboratory of Ecosystem Network Observation and Modeling,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China.Influencing Factors on Farming System Development in Shandong Province[J].Asian Agricultural Research,2010,2(10):60-64. 被引量:1