我国主要麦区农户施肥评价及减肥潜力分析
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Evaluation of Farmers’ Fertilizer Application and Fertilizer Reduction Potentials in Major Wheat Production Regions of China
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图1. 农户施肥量分级标准与等级划分 |
Fig. 1. Grading standard and grade divisions for Famers’ fertilizer application |
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