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Effects of fertilization and density on photosynthetic characteristics and yield of hybrid foxtail millet Effects of Fertilizer and Planting Density on Yield and Yield Components in Foxtail Millet Hybrid Zhangzagu 5 Effects of fertilization and density on soluble sugar and protein and nitrate reductase of hybrid foxtail millet Enzymatic extraction process of calycosin glucoside and pormononetin in Astragali Radix with quadratic general rotary unitized design