Linze Inland River Basin Research Station,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 73000,P.R.China;
Linze Inland River Basin Research Station,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 73000,P.R.China;
Lanzhou Branch,Chinese Academy of Sciences,Lanzhou 730000,P.R.China;
Institute of Vegetables,Gansu Academy of Agricultural Sciences,Lanzhou 73000,P.R.China;