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 mg.kg-1增加到10 a的248 mg.kg-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。
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 mg·kg-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.]
出处
《浙江农林大学学报》
CAS
CSCD
北大核心
2011年第1期33-39,共7页
Journal of Zhejiang A&F University
基金
浙江省自然科学基金资助项目(Z5080203
Y5080110)
关键词
土壤学
畜禽粪肥
水稻土
磷积累
磷流失
soil science
animal manure
paddy soil
phosphorus
phosphorus accumulation
phosphorus runoff
作者简介
刘晓玲，从事环境生态研究。E-mail：lxl19840826@hotmail．com。
通信作者：单胜道，教授，博士，博士生导师，从事循环经济和环境科学研究。E-mail：shanshd@sina．com
