山东夏玉米土壤干旱阈值研究与影响评价
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The Thresholds of Soil Drought and Its Impacts on Summer Maize in Shandong Province
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图4. 夏玉米减产率与苗期、穗期及花粒期土壤相对湿度单位变化的关系 |
Fig. 4. The relationship between yield reduction and unit change of soil relative humidity at seedling stage, ear stage and grain stage of summer maize |
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