施氮量对黄土高原旱地冬小麦产量和水分利用 效率影响的整合分析
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A Meta-Analysis of the Effects of Nitrogen Application Rates on Yield and Water Use Efficiency of Winter Wheat in Dryland of Loess Plateau
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图1. 冬小麦试验地点分布图 |
Fig. 1. Distribution map of winter wheat experimental sites in Loess Plateau |
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