Transformation of added phosphorus to acid upland soils with different soil properties in Indonesia
Transformation of added phosphorus to acid upland soils with different soil properties in Indonesia
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DOI：
10.1111/j.1747-0765.2006.00087.x
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发表时间：
2006-12
影响因子：
2
通讯作者：
A. Hartono;Shinya Funakawa;T. Kosaki
中科院分区：
文献类型：
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作者：
A. Hartono;Shinya Funakawa;T. Kosaki
本文研究了印度尼西亚15种不同理化性质的酸性高地土壤中外源磷在土壤中的转化及土壤性质对磷转化的影响。基于氧化物相关的因子得分（铝（Al）加上1/2铁（Fe）（由草酸铵），结晶铝和铁的氧化物，阳离子交换能力，和粘粒含量）从以前的主成分分析，土壤被分为两组，即组1的土壤与积极的因子得分和组2的负因子得分。通过以下方法测定不同组分中的土壤P的量：（i）在30 mL蒸馏水中以碳酸氢盐形式进行树脂剥离，然后用0.5 mol L-1 HCl萃取（植物容易获得的树脂-P无机物（Pi）），（ii）0.5 mol L−1 NaHCO 3萃取有机磷（Po）（P与植物和微生物对P的吸收密切相关，并与矿物表面或沉淀的Ca-P和Mg形式结合），（iii）0.1 mol L−1 NaOH提取Pi和Po（P通过化学吸附更强地保持在土壤表面的Fe和Al组分上）和（iv）1 mol L−1 HCl提取Pi（低溶解度的Ca-P）。通过在培养1、7、30和90 d后回收P组分，研究了添加的P（300 mg P kg−1）向其他组分的转化。培养90 d后，第1组土壤中大部分P转化为NaOH-Pi组分，而第2组土壤中大部分P转化为树脂Pi、NaHCO_3-Pi和NaOH-Pi组分。第1组土壤在培养30 d后达到磷素转化平衡，第2组土壤则需要较长时间。氧化相关因子得分与磷转化速率常数（k）和NaOH-Pi回收率呈正相关。此外，不仅数量，而且类型（高岭石）的粘土正相关的k值和磷积累到NaOH-Pi。安山岩和火山灰发育的土壤NaOH-Pi显著高于花岗岩、火山沉积物和沉积岩发育的土壤。总结氧化物相关的因素，母质和粘土矿物学的土壤特性，在评估磷转化和磷积累在印度尼西亚酸性高地土壤中非常重要。
Abstract The transformation of added phosphorus (P) to soil and the effect of soil properties on P transformations were investigated for 15 acid upland soils with different physicochemical properties from Indonesia. Based on oxide-related factor scores (aluminum (Al) plus 1/2 iron (Fe) (by ammonium oxalate), crystalline Al and Fe oxides, cation exchange capacity, and clay content) obtained from previous principal component analyses, soils were divided into two groups, namely Group 1 for soils with positive factor scores and Group 2 for those with negative factor scores. The amounts of soil P in different fractions were determined by: (i) resin strip in bicarbonate form in 30 mL distilled water followed by extraction with 0.5 mol L−1 HCl (resin-P inorganic (Pi) that is readily available to plant), (ii) 0.5 mol L−1 NaHCO3 extracting Pi and P organic (Po) (P which is strongly related to P uptake by plants and microbes and bound to mineral surface or precipitated Ca-P and Mg forms), (iii) 0.1 mol L−1 NaOH extracting Pi and Po (P which is more strongly held by chemisorption to Fe and Al components of soil surface) and (iv) 1 mol L−1 HCl extracting Pi (Ca-P of low solubility). The transformation of added P (300 mg P kg−1) into other fractions was studied by the recovery of P fractions after 1, 7, 30, and 90 d incubation. After 90 d incubation, most of the added P was transformed into NaOH-Pi fraction for soils of Group 1, while for soils of Group 2, it was transformed into resin-Pi, NaHCO3-Pi and NaOH-Pi fractions in comparable amounts. The equilibrium of added P transformation was reached in 30 d incubation for soils of Group 1, while for soils of Group 2 it needed a longer time. Oxide-related factor scores were positively correlated with the rate constant (k) of P transformation and the recovery of NaOH-Pi. Additionally, not only the amount of but also the type (kaolinitic) of clay were positively correlated with the k value and P accumulation into NaOH-Pi. Soils developed from andesite and volcanic ash exhibited significantly higher NaOH-Pi than soils developed from granite, volcanic sediments and sedimentary rocks. Soil properties summarized as oxides-related factor, parent material, and clay mineralogy were concluded very important in assessing P transformation and P accumulation in acid upland soils in Indonesia.