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The hydroponic experiment was conducted to study the effects of ammonium (NH 4+ ):nitrate (NO 3− ) ratios on growth, photosynthetic responses, chloroplast ultrastructure and root architecture of mini Chinese cabbage under low light intensity condition. Mini Chinese cabbage (Brassica pekinensis) seedlings were grown in pots (38cm×28cm×12cm) in a greenhouse at photosynthetic...
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