| 伴生有金雀花、黑麦草的辐射松幼苗Allophanic土壤磷肥驱动的各磷形态变化 |
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| 作者姓名： | Achmad Arivin Rivaie Russ Williams Tillman |
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| 作者单位： | Achrnad Arivin Rivaie(Indonesian Agency for Agricultural Research and Development, Jl. Tentara Pelajar 10, Bogor, 16114 Indonesia);Russ Williams Tillman(Soil and Earth Sciences, Institute of Natural Resources, Massey University, Palmerston North, 4442 New Zealand) |
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| 基金项目： | supported by Centre for Sustainable Forest Management at Forest Research Institute, New Zealand |
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| 摘 要： | 对盆栽的伴生有金雀花(Cytisus scoparius)、黑麦草(Lolium multiflorum)的辐射松(Pinus radiata)幼苗施用3种浓度(O,50,100 μg·g-1)的三过磷酸钙,14个月后测定缺磷Allophanic土壤中各磷形态变化,确定根际土壤中施加的磷肥的去向.结果表明,施加磷肥增加了根际土壤中NaOH-Pi、NaOH-P0和H2SO4-Pi的浓度,但是减少了土壤残留磷的含量,而树脂磷浓度维持不变,在这种土壤中树脂磷浓度仍然较低(1 to 3μg·g-1).施加到土壤里的磷肥,有机磷的回收率最高(40%-49%),这是因为这种土壤具有较高的磷固定能力(92%),其次是不稳定有机磷(7%-19%).在磷肥缺乏或不施加磷肥的情况下,辐射松根际土壤中有机磷浓度低于周边土壤以及金雀花、黑麦草根际土壤.这可能与磷肥缺乏条件下,根系和菌根产生较高的草酸盐而释放部分磷到根际土壤中有关.但此观点需要进一步的研究检验.
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| 关 键 词： | 金雀花 黑麦草 磷肥 辐射松 根际 土壤磷分 |
Phosphorus fractions of fertiliser-derived P in an allophanic soil under Pinus radiata seedlings grown with broom and ryegrass |
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| Achmad Arivin Rivaie,Russ Williams Tillman.Phosphorus fractions of fertiliser-derived P in an allophanic soil under Pinus radiata seedlings grown with broom and ryegrass[J].Journal of Forestry Research,2009,20(3). |
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| Authors: | Achmad Arivin Rivaie Russ Williams Tillman Indonesian Agency for Agricultural Research Development Jl Tentara Pelajar Bogor Indonesia Soil Earth Sciences |
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| Institution: | Achmad Arivin Rivaie*1,Russ Williams Tillman2 1Indonesian Agency for Agricultural Research , Development,Jl. Tentara Pelajar 10,Bogor,16114 Indonesia 2Soil , Earth Sciences,Institute of Natural Resources,Massey University,Palmerston North,4442 New Zeal, |
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| Abstract: | |
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| Keywords: | Cytisus scoparius Lolium multiflorum phosphorus fertiliser Pinus radiate rhizospbere soil phosphorus fractionsFoundation project: This work was supported by Centre for SustainableForest Management at Forest Research Institute New Zealand |
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