冻融期东北农田土壤温度和水分变化规律及影响因素分析
赵强, 吴从林, 罗平安, 王康, 李红珍, 黄介生

Variation and influencing factors of soil temperature and moisture during freezing and thawing period in a seasonal freezing agricultural area in Northeast China
Qiang ZHAO, Conglin WU, Ping’an LUO, Kang WANG, Hongzhen LI, Jiesheng HUANG
图3 2014 - 2015年冻结期负累积温度和累积降雪(雨)量
Fig.3 Cumulative negative temperature and cumulative precipitation during the freezing period of 2014 - 2015