Influence of Changes of Accumulation Temperature in Winter on Crop Growing Periods in Loess Plateau of Xifeng
FAN Xiao-chun1,2,GUO Jiang-yong3,YANG Xiao-li2 (1.Lanzhou Institute of Arid Meteorology,Lanzhou 730020,China;2.Meteorological Bureau of Pingliang City;3.Meteorological Bureau of Qingyang City)
Chinese Journal of Agrometeorology . 2007, (03): 318 -321 .