Total soil P，soil organic P，and soil available P with long-term application of pig manure in paddy soils
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摘要: 以浙江嘉兴水稻土为例，讨论不同粪肥施加年限对水稻土总磷、有机磷和有效磷的影响，阐明粪肥施加影响下磷的积累和流失规律。结果表明：①磷素是比较容易在土壤中积累的，且主要积累在土体上部。随着施肥年限的增加，磷逐渐从表层往下层迁移。施肥10 a，磷能迁移到的深度为40 cm左右。②表层土壤有机磷也随施肥年限的增加而增加，从0 a的212 mgkg－1增加到10 a的248 mgkg－1，且土壤有机磷积累与土壤有机质密切相关。③随施肥年限增加，有效磷也增加，主要积累在土壤表层。④研究地区土壤磷水平高，已经超过了磷素向水体释放的环境警戒值，粪肥施加不仅增加土壤磷素的积累，同时有利于磷素的迁移，因而磷素向水体释放的风险加大。图5表1参21Abstract: The purpose of this study was to clarify the law of phosphorus （P） accumulation and runoff with long-term P fertilization in paddy soils. Total P，soil organic P，and available P with long-term （10 years） pig manure fertilization were studied in Jiaxing，Zhejiang Province，China using correlation analysis and significance analysis. Results showed that after 10 years of pig manure fertilization soil total P tended to decrease ，and phosphorus moved to the 40 cm soil layer . Also，soil organic P increased from 212 to 248 mgkg-1 with a significant （P ＜ 0.05） correlation （r = 0.811） between soil organic matter and soil organic P. Additionally，soil available P increased with pig manure application. In areas with high levels of soil P，pig manure fertilization increased soil P accumulation and movement. Finally，soil P was greater than the vigilance value of the environment implying risk of a soil P release to the water. ［Ch，5 fig. 1 tab. 21 ref.］
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Key words:
- soil science /
- animal manure /
- paddy soil /
- phosphorus /
- phosphorus accumulation
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2011.01.006
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