International Journal of Plant Production   2016 年 10 卷 4 期

2016.09.01

To identify countermeasures to the effects of climate warming on crop production, we must understand the changes in crop phenology and the relationships between phenology and climate change and cultivar. We used summer maize phenological and climate data in the North China Plain, collected from 1981 to 2010. This study analyzed the spatiotemporal trends in phenological data and lengths of different growing phases, mean temperatures and rainfall. The analyses showed that sowing, jointing and anthesis occurred relatively early at 13 (48.1%), 11 (40.7%) and 13 (48.1%) stations, respectively. Maturity dates were delayed significantly at 10 (37.0%) stations. The lengths of the vegetative growing phases, vegetative and reproductive growing phase at most stations showed a negative trend. The lengths of the reproductive growing phase increased at 25 (92.6%) stations, respectively. Furthermore, at most stations, the correlations between T