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Regulation of Container Types on Growth, Root Architecture and Nutr ientsUptake of Seedling in Malus hupehensis (Pamp.) Rehd. Regulation of Container Types on Growth, Root Architecture and Nutr ientsUptake of Seedling in Malus hupehensis (Pamp.) Rehd. Investigation on the Growth Rule of Root System of Winter Wheat in Semiarid Red Clay Soil Hills