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首页> 外文会议>Biogeochemistry of Trace Elements >Distribution of aluminum and fluoride in subtropical hilly red soils of tea plantation and Its Influential factors
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Distribution of aluminum and fluoride in subtropical hilly red soils of tea plantation and Its Influential factors

机译：茶树亚热带丘陵红壤中铝和氟化物的分布及其影响因素

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摘要

The distribution of Al and F extracted by four extracting solutions in red soils of tea plantation from subtropical hilly country was studied. It was indicated that the order for aluminum-extracting capacity of the four extractants was as following: 1mol/L HCl>1mol/L NH<,4>A<,c>(pH4.8)>1mol/L KCl (pH5.5)>H<,2>O (pH6.8). The fluoride content extracted by 1mol/L HCl was the highest, ranging from 6.62~38.8mg/kg; the fluoride content extracted by 1mol/L KCl and 1mol/L NH<,4>A<,c> was the next; and the water-soluble fluoride content was the lowest. The contents of aluminum and fluoride extracted by four extractants decreased with depth along soil profiles and accumulate 0-3cm surface soils. The linear regression between fluoride and aluminum extracted by deionised water was established: H<,2>O- F=6.43 H<,2>O-Al+10.63, r=0.3506 (n=45, P<0.01). Aluminum was significantly correlated with fluoride extracted by the other extractants. Marked increase of the content of aluminum and fluoride was noticed with increase ages of tea plantation. The content of aluminum and fluoride extracted by four extractants was also influenced by parent material and organic matter.
机译：研究了亚热带丘陵国茶园红壤中四种提取溶液提取的Al和F的分布。结果表明，四种萃取剂的铝提取能力的顺序如下：1mol / L HCl> 1mol / L NH <，4> A <，C>（PH4.8）> 1mol / L KCl（pH5。 5）> H <，2> O（pH6.8）。 1mol / L HCl提取的氟化物含量最高，范围为6.62〜38.8mg / kg;通过1mol / L KCl和1mol / L NH <，4> A <，C>提取的氟化物含量为下一个;水溶性氟化物含量最低。通过四种萃取剂提取的铝和氟化物的含量随着土壤谱的深度而下降，并积聚0-3cm的表面土壤。建立了由去离子水提取的氟化物和铝之间的线性回归：H <，2> O-F = 6.43h <，2> O-Al + 10.63，R = 0.3506（n = 45，P <0.01）。铝与其他萃取剂提取的氟化物显着相关。通过增加茶园种植园，注意到铝和氟化物含量的显着增加。由四种萃取剂提取的铝和氟化物的含量也受到母体材料和有机物质的影响。

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