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1. 华北地区氮素可持续管理评价体系
Fig. 1. Nitrogen sustainable management evaluation in North China Plain
