气候变化背景下河北夏玉米生长季热量资源利用率时空变化

韩耀杰, 彭记永, 张溪荷, 李树岩

Spatial and temporal variations of heat resources utilization efficiency of summer maize in growth season under climate change in Hebei Province

HAN Yaojie, PENG Jiyong, ZHANG Xihe, LI Shuyan

图5 1981—2019年河北省夏玉米生长季积温（a）及其利用率（b）变化

Fig.5 Variation of accumulative temperature （a） and its utilization rate （b） of summer maize in growth season from 1981 to 2019 in Hebei Province