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7. 2005-2014年华北地区冬小麦产量和氮盈余评价
Fig. 7. Comprehensive evaluation of winter wheat yield and nitrogen surplus in North China Plain from 2005 to 2014
