水土保持学报2011，Vol.25Issue(6)：221-224,4.
免耕和草篱措施对径流中典型农业面源污染物的去除效果
Effects of Grass Hedges and No-tillage Practice Oil the Removing of Typical Agricultural Non-point Source Pollutants from Runoff
摘要
Abstract
Chemical fertilizer and herbicide are widely used in agricultural production. These chemical substances not only significantly increase crop yields but also result in serious water pollution. This study was conducted to evaluate the effects of three practices (no-tillage, grass hedges, no-tillage and grass hedges) on the loss of nitrogen, phosphorus and atrazine with runoff. The results showed that no-tillage and grass hedges significantly reduced agricultural non-point source pollution. As compared to the control, the total nitrogen, total phosphorus and atrazine loss in the plots with no-tillage were decreased by 53%, 51% and 56%, respectively; reductions by the grass hedges were 68%, 61% and 90%, respectively; the decreases due to no-tillage and grass hedges were 77%, 76% and 92%, respectively. Moreover, the regression results showed that the losses of nitrogen, phosphorus and atrazine with runoff were positively correlated to the surface runoff. From these results could be concluded that both of no-tillage and grass hedges could significantly reduce nitrogen, phosphorus and atrazine loss with runoff, and the integration of these two practices was proved to be much more effective than their individual effects.关键词
氮/磷/阿特拉津/水土流失/保护性耕作/等高草篱Key words
nitrogen/ phosphorus/ atrazine/ soil and water conservation/ conservation tillage/ contour grass hedges分类
农业科技引用本文复制引用
李霞,陶梅,肖波,王庆海,陈建平..免耕和草篱措施对径流中典型农业面源污染物的去除效果[J].水土保持学报,2011,25(6):221-224,4.基金项目
北京市科技新星计划(2009B25) （2009B25）
北京市自然科学基金(8102015) （8102015）
北京市农林科学院青年基金(2009) （2009）
黄土高原土壤侵蚀与旱地农业国家重点实验室基金(10501-239) （10501-239）
