Effects of Long-Term Located Fertilization on Status of Phosphorus in Non-Calcareous Fluro-Aquic Soil

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- Effects of Long-Term Located Fertilization on Status of Phosphorus in Non-Calcareous Fluro-Aquic Soil
- Issue 5, Pages: 43-46(2005)
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- Published：2005
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Effects of Long-Term Located Fertilization on Status of Phosphorus in Non-Calcareous Fluro-Aquic Soil[J]. 2005, (5): 43-46.
DOI：

Effects of Long-Term Located Fertilization on Status of Phosphorus in Non-Calcareous Fluro-Aquic Soil[J]. 2005, (5): 43-46. DOI：

基于无石灰性潮土长期定位试验

研究长期施肥对土壤磷素状况的影响的结果表明

在无石灰性潮土上长期单施有机肥、有机—无机肥配施、氮磷钾配施能提高土壤Ca-P

Fe-P

Al-P的含量

降低O-P的含量。单施氮肥能提高土壤O-P、降低Ca-P含量。单施有机肥及其配施无机化肥比单施无机化肥有机磷增加了15.60%~11.21%

无机磷减少了11.21%~15.60%。土壤有效磷与Fe-P无相关性

与土壤全磷、无机磷、有机磷呈极显著正相关

与Ca-P

Al-P呈显著正相关

与O-P呈极显著负相关。对有效磷贡献(直接通径系数)的相对重要性依次为:O-P(72.6940)>Ca-P(69.9052)>全磷(39.6186)>有机磷(-32.8527)>无机磷(-20.9515)>Fe-P(17.2542)>Al-P(6.4832)。由逐步回归得出土壤无机磷中的O-P

Ca-P以及有机磷是土壤有效磷主要磷源。

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Effects of Long-Term Located Fertilization on Status of Phosphorus in Non-Calcareous Fluro-Aquic Soil

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