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(
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Spatiotemporal Variation of Winter Wheat Yield and Nitrogen Management in Five Provinces of North China Plain
SiYang REN,QingSong ZHANG,TingYu LI,FuSuo ZHANG()
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图2. 2005-2014年华北地区冬小麦不同省份产量及产量差
Fig. 2. Grain yield and grain yield gap in different winter wheat regions of North China Plain from 2005 to 2014
