Frost Historical Evolution and Agricultural Disaster Risk Measures of Chaoyang
ZONG Ying-Fei1,TAO Lin1,LI Li2 (1.Meteorological Bureau of Chaoyang County,Chaoyang 122000,China;2.Meteorological Bureau of Yixian County,Yixian 121000)
Chinese Journal of Agrometeorology . 2010, (S1): 155 -158 .