农业环境科学学报2011，Vol.30Issue(2)：328-333,6.
海河流域水稻田氮磷地表径流流失特征初探
Preliminary Study on Characteristics of Nitrogen and Phosphorus Runoff Losses from Rice Fields in Hai River Basin, China
摘要
Abstract
Runoff is one of the major mechanisms for nutrient loss from crops. However, it has been studied less in North China than in South China where there is much more runoff. Therefore, to better understand the loss of nitrogen (N) and phosphorus (P) in runoff, we studied runoff from paddy rice in a typical agricultural county in the Hai River basin. Using event monitoring in the field, we studied the characteristics of runoff losses under natural rainfall conditions. N losses were 4.77 kg· hm-2 and its loss rate was 0.7％ of applied fertilizer. P losses were 2.08 kg· hm-2 and its loss rate was 0.6％ of applied fertilizer. As expected N losses were positively co-related to amount of runoff and mainly consisted of particulate nitrogen. P losses were affected by amount of fertilizer applied and runoff, however due to its complexity(of P), the influence had to be further studied. Due to rainfall scarcity in North China area, runoff loss was not the primary problem for nutrient losses from paddy rice in the Hai River basin.关键词
海河流域/水稻/地表径流/氮磷流失Key words
Hai River basin/ paddy rice/ runoff/ N and P loss分类
资源环境引用本文复制引用
陈颖,赵磊,杨勇,孙春元,张晓岚..海河流域水稻田氮磷地表径流流失特征初探[J].农业环境科学学报,2011,30(2):328-333,6.基金项目
全球环境基金(GEF)海河流域水资源与水环境综合管理项目(SEPA-ZWN-3.C/II/S/09/090) （GEF）
