Long-Term Fertilization Effect on Fraction and Distribution of Soil Phosphorus in a Plastic-Film House in China
Long-Term Fertilization Effect on Fraction and Distribution of Soil Phosphorus in a Plastic-Film House in China
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DOI：
10.1080/00103624.2011.528493
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发表时间：
2011-01-01
影响因子：
1.8
通讯作者：
Lemcoff, Jorge Hugo
中科院分区：
文献类型：
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作者：
Yang, Lijuan;Li, Tianlai;Lemcoff, Jorge Hugo
了解磷在长期施肥土壤中的行为对于更好的施肥实践和保护环境质量是至关重要的。因此，自1988年以来，我们在温室连续施肥条件下对土壤无机磷的各种形态含量、形态和分布进行了评价。连续施肥提高了0~20 cm土层的全磷和速效磷含量。增施有机肥和化肥显著提高了土壤全磷、速效磷、有机磷和无机磷的含量。在施有机肥的土壤中，磷的最大部分是闭锁性磷(O-P)，而在不施有机肥的土壤中，磷的最大部分是钙结合磷(Ca-P)。有机肥和无机肥处理的土壤各形态磷含量均随土壤深度的增加而逐渐降低。因此，长期施用有机肥增加了土壤中各种形态磷的积累，导致磷的深层转运。
Knowledge of phosphorus (P) behavior in long-term fertilized soils is essential for better fertilization practices and protection of environmental quality. Therefore, we evaluated the various forms of P contents, fraction, and distribution of soil inorganic P in a greenhouse under continuous fertilization since 1988. Continuous fertilization increased total and available P contents at the 0- to 20-cm soil layer. Applied organic manure and chemical fertilizer increased the contents of total, available, organic, and inorganic P (Pi) significantly. In the soil fertilized with organic manure, the greatest fraction of the Pi was occluded P (O-P), whereas in the soil not fertilized with organic manure, the greatest fraction of the Pi was calcium-bound P (Ca-P). All fractions of the Pi in both soils treated with organic manure and inorganic manure decreased gradually with soil depth. Thus, the long-term fertilization of organic fertilizer increases the accumulation of various soil P forms and causes deeper Pi translocation.