华北平原五省冬小麦产量和氮素管理的时空变异
任思洋,张青松,李婷玉,张福锁(
)
)
Spatiotemporal Variation of Winter Wheat Yield and Nitrogen Management in Five Provinces of North China Plain
SiYang REN,QingSong ZHANG,TingYu LI,FuSuo ZHANG()
)
图4. 2005-2014年华北地区不同省份冬小麦的施氮量
Fig. 4. Nitrogen application in different winter wheat regions of North China Plain from 2005 to 2014
