| Effects of phosphorus on nutrient uptake and rhizosphere acidification of soybean (G/ycine max L.) |
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| 作者单位： | MIAO Shujie~1 QIAO Yunfa~2 HAN Xlaozeng~2 ZHOU Lianren~1 1 Resources and Environmental Sciences College，Northeast Agricultural University，Harbin 150030，China 2 Northeast Institue of Geography and Agricultural Ecology，CAS，Harbin 150081，China |
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| 摘 要： | Pot experiment was conducted to examine how application of KH_2PO_4(0-165 mg·kg~(-1)P)to affect nutrient ion uptake and rhizosphere acidification of soybean(Glycine max L.) grown in greenhouse for 90 days.When supplied of 82 and 165 mg·kg~(-1) P, soybeans showed excessive poison.Under all kinds of P levels,the K,Ca,Na and Mg concents in plant tissues were as below order: K was nodules>roots>pods>shoots;Ca was shoots>roots>nodules>pods;Na was roots>nodules>pods>shoots and Mg was shoots>nodules>roots>pods.K concent in plant tisssues had greater effect on rhizosphere acidification than other cations in this experiment irrespective of P supply,and was significantly negative to pH.Na concentration was significantly positive to pH.Excessive P supply induced rhizosphere acidification,pH decreased as P supply increased from 82 to 165 mg·kg~(-1).Ash alkalinity in shoots and roots was significantly positively correlated with rhizosphere pH irrespective of P supply.All these results suggested that P supply affected nutrient uptake,induced ash alkalinity to increase and rhizosphere pH to decrease in soybean.
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Effects of phosphorus on nutrient uptake and rhizosphere acidification of soybean (G/ycine max L.) |
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| MIAO Shujie QIAO Yunfa HAN Xlaozeng ZHOU Lianren Resources and Environmental Sciences College,Northeast Agricultural University,Harbin ,China Northeast Institue of Geography and Agricultural Ecology,CAS,Harbin ,China. Effects of phosphorus on nutrient uptake and rhizosphere acidification of soybean (G/ycine max L.)[J]. Journal of Northeast Agricultural University, 2007, 0(3) |
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| Authors: | MIAO Shujie QIAO Yunfa HAN Xlaozeng ZHOU Lianren Resources Environmental Sciences College Northeast Agricultural University Harbin China Northeast Institue of Geography Agricultural Ecology CAS Harbin China |
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| Affiliation: | MIAO Shujie~1 QIAO Yunfa~2 HAN Xlaozeng~2 ZHOU Lianren~1 1 Resources and Environmental Sciences College,Northeast Agricultural University,Harbin 150030,China 2 Northeast Institue of Geography and Agricultural Ecology,CAS,Harbin 150081,China |
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| Abstract: | |
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| Keywords: | nutrient uptake rhizosphere acidification phosphorus soybean |
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