Effect of Different Land Use Systems on Forms of Organic Phosphorus in Brown Soil and Microaggregates

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Effect of Different Land Use Systems on Forms of Organic Phosphorus in Brown Soil and Microaggregates

更新时间：2024-11-07

- Effect of Different Land Use Systems on Forms of Organic Phosphorus in Brown Soil and Microaggregates
- Issue 4, Pages: 141-144(2007)
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- Published：2007
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Effect of Different Land Use Systems on Forms of Organic Phosphorus in Brown Soil and Microaggregates[J]. 2007, (4): 141-144.
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Effect of Different Land Use Systems on Forms of Organic Phosphorus in Brown Soil and Microaggregates[J]. 2007, (4): 141-144. DOI：

摘要

采用Bowman-cole有机磷分级法研究了典型棕壤及其各级微团聚体中有机磷组分在林地、柞树林地、耕地3种土地利用方式下的变化情况.结果表明

有机磷总量在3种利用方式下表现为林地＞耕地＞柞树林地

有机磷占全磷的比例却为林地＞柞树林地＞耕地.土地利用方式对棕壤活性有机磷和高稳性有机磷的含量及有效性影响甚微

开垦为耕地可保持中活性有机磷含量并提高其有效性

开垦为柞树林地则显著降低其含量

耕垦可显著降低耕地中中稳性有机磷含量及其比例.耕垦可以降低有机磷总量在各级微团聚体中的含量

且降低率随粒级的增大而增加

提高50～250 μm粒级活性有机磷的有效性

降低＜10 μm和50～250 μm粒级中的中活性有机磷含量

开垦为耕地有利于＜10 μm粒级中其有效性的保持

可显著降低10～50 μm和50～250 μm粒级中稳性有机磷含量

尤其显著降低耕地中其占有机磷的比例

开垦为柞树林有地有利于高稳性有机磷在各粒级中的分解转化

开垦为耕地的却有利于高稳性有机磷在10～50 μm和50～250 μm粒级中累集.

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