Climatic Variation Characteristics and Influencing Factors of the Last Frost Date in Northwest China
CHEN Shao yong1,2,XIA Quan2,WANG Jin song1,LOU Wang ping3
Chinese Journal of Agrometeorology . 2013, (01): 8 -13 .  DOI: 10.3969/j.issn.1000-6362.2013.01.002