水土保持学报2012，Vol.26Issue(2)：29-32,44,5.
苕溪流域茶园不同种植模式下地表径流氮磷流失特征
Characteristics of Nitrogen and Phosphorus Losses with Surface Runoff in Tea Field of Tiaoxi Watershed Under Different Planting Patterns
摘要
Abstract
In order to explore the characteristics of nitrogen and phosphorus losses with surface runoff in tea field of Tiaoxi watershed under different planting patterns,the runoff water samples from contour planting and straight row planting tea field respectively in May to October of 2010 were sampled and determined.The contents,form and temporal changing law of nitrogen and phosphorus were analyzed.The results showed that,for either contour planting or straight row planting tea field,the peak value of each form of nitrogen in runoff water appeared at the end of June or early July.However,the peaks of phosphorus appeared at the end of June or early July,and early September.In the total monitoring period,the total nitrogen（TN）,nitrate nitrogen（NO-3-N） and ammonia nitrogen（NH＋4-N） contents in runoff water samples from contour planting tea field were 8.54%~43.01%,4.05%~46.70%,5.92%~33.19% lower than that from straight row planting tea field,respectively.But there were no significant differences between the two planting patterns.The total phosphorus（TP）,total dissolvable phosphorus（TDP）,particulate phosphorus（PP） contents in runoff water samples from contour planting tea field were 8.51%~31.07%,0.39%~17.91%,8.45%~36.86% lower than that from straight row planting tea field,respectively.There were extremely significant differences between the two planting patterns for TP and PP,but not for TDP.For either contour planting or straight row planting tea field,NO-3-N was the main form of nitrogen and PP was the main form of phosphorus existing in runoff water samples.Generally speaking,the contour planting pattern could prevent the nitrogen and phosphorus losses with surface runoff in tea field effectively.关键词
茶园/顺坡种植/等高种植/氮磷流失/径流Key words
tea field/straight row planting/contour planting/nitrogen and phosphorus losses/runoff分类
农业科技引用本文复制引用
刘宗岸,杨京平,杨正超,邹俊良..苕溪流域茶园不同种植模式下地表径流氮磷流失特征[J].水土保持学报,2012,26(2):29-32,44,5.基金项目
国家水体污染控制与治理科技重大专项 （）
