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Studies on the Uptake of Mineral K by Mixed-plantings of Poplar and Black Locust Under K-deficiency

LiMei;Wang Tiamhua;WeiGamg;Wang Tao(Experiment Center of Forest Biology,BFU 100083)  
One-year-old poplar and black locust grown in sand culture with closed cycling ofmineral nutrients were used to study the uptake of mineral K,and the effect of mixed-plantingand K-deficiency on uptake and accumulation of N,P,K.Results showed that both species hadthe ability to uptake mineral K,but at different rates. K uptake was significantly promoted bythe plants in mixed-planting and under K-deficiency.K-deficiency depressed mainly root growthand shcot growth was less affected.K-deficiency affected N uptake more than P uptake.
【Fund】: 国家自然科学基金
【CateGory Index】: S714.8
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