Chinese Journal of Agrometeorology ›› 2009, Vol. 30 ›› Issue (S1): 77-81.
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HE Shuang1,LI Mao-song1,SONG Ji-qing1,WANG Dao-long2(1.Institute of Environment and Sustainable Development in Agriculture,CAAS,Beijing 100081,China;2.Institute of Agricultural Resources and Regional Planning,CAAS,Beijing 100081)