摘要
对杭嘉湖地区稻田土壤氮磷侧渗流失的研究结果表明,稻田土壤侧渗流失是氮磷流失的一个重要途径。田埂对水田的无机氮磷的侧渗有明显的截留作用,且截留效果与田埂宽度及其土壤紧实度密切相关,截留效果在氮磷的不同形态上也表现出一定的差异,其中对氨氮和磷酸盐的侧渗截流作用比较明显,对硝氮的作用则较小。
The investigation on the lateral seepage of inorganic N ＆ P in rice fields of Hangzhou, Jiaxing and Huzhou areas showed that the lateral seepage is an important way of the N ＆ P loss and the field ridge has an obvious effect on keeping the N ＆ P in rice field from seepage loss. The intercepting effect is closely related to the field ridge width and the soil compaction and also different on various forms of N and P. The intercepting effect is comparatively evident on ammonium nitrogen and phosphate but less on nitrate nitrogen.
出处
《上海农业学报》
CSCD
2006年第2期68-70,共3页
Acta Agriculturae Shanghai
基金
国家重点基础研究发展规划资助项目(2002CB410807)
浙江省自然科学基金(Y504247)
关键词
侧渗
稻田
氮
磷
农业非点源污染
Lateral seepage
Rice field
Nitrogen
Phosphorus
Agricultural non-point source pollution
