Study on Maize Sowing Time in Heilongjiang Province Based on Temperature Data
LV Jia jia，WANG Qiu jing，YAN Pin，WANG Liang liang，ZHU Hai xia，JIANG Li xia,DU Chun ying
Chinese Journal of Agrometeorology . 2014, (01): 68 -73 .  DOI: 10.3969/j.issn.1000-6362.2014.01.010