摘要
采用田间径流试验观察方法,详细剖析了南方丘陵区7个试验点连续4年(2008-2011年)的实验数据,研究南方丘陵区耕地磷素地表径流流失特征。结果表明,南方丘陵区耕地磷素流失量与地表径流产生量成显著正相关,颗粒态磷素是磷素流失的主要形态,占到总流失量的78%以上。磷素施用量和农艺措施是影响磷素地表径流量的关键因素,在坡耕地上农艺措施是主要的影响因素,在平地上磷素施肥量是主要的影响因素。
The loss amounts of phosphorus in farmland in hilly region of South China were studied using the field runoff experiment method.Based on the analysis of the detail data from 7 test site consecutive four years,the research showed that there was a positive correlation between loss amount of phosphorus and amount of runoff water（r^2= 0.636）.The particulate phosphorus was the main form in loss amount of phosphorus by runoff water,which accounted for more than 78 %.The phosphorus input and agronomic measures were important factors to loss amount of phosphorus,agronomic measures were the main factors in slope land,and phosphorus input was the main factor in flat land.
出处
《西南农业学报》
CSCD
北大核心
2016年第11期2676-2681,共6页
Southwest China Journal of Agricultural Sciences
基金
公益性行业(农业)科研专项经费(201303089)
种植业源污染物流失系数测算项目(WX-Z-07-15)
关键词
耕地
磷流失
径流量
农艺措施
Farmland
Loss amount of phosphorus
Amount of runoff water
Agronomic measures
作者简介
胡万里（1977-），男，云南会泽人，副研究员，长期从事植物营养及农业面源污染防治工作，E-mail：huwanli．2007@163．com，
通讯作者，E-mail：liuhovlgbin@163．com。
