作者单位:Liu Enke,Yan Changrong,He Wenqing,Liu Qin,Liu Shuang(Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences(CAAS), Postal 100081, Beijing, PR China;Postal 100081, Beijing , PR China)刘恩科,严昌荣,何文清,刘勤,刘爽(中国农业科学院,农业环境与可持续发展研究所,北京,100081;农业部旱作节水农业重点开放实验室,北京,100081)