欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
基于汛期降雨径流试验,研究施肥与作物类型对旱作地表径流氮磷流失规律的影响.结果表明,底肥施用与否对作物生长中后期的表土氮磷浓度及不同形态氮磷浓度和流失量的影响均不显著.作物类型显著影响地表径流深、土壤侵蚀量、颗粒态氮径流浓度和流失量及颗粒态磷流失量,其中径流深的大小顺序为裸地〉棉花〉玉米〉黄豆,土壤侵蚀量与颗粒态氮磷流失量的大小顺序为裸地〉棉花≈玉米.地表径流深、土壤侵蚀量、颗粒态氮磷流失量与作物叶面积指数显著负相关,颗粒态氮磷流失量分别与地表径流深和土壤侵蚀量显著正相关.
英文摘要：
Field experiment was conducted to investigate the effects of fertilization and crop type on nitrogen and phosphorus concentrations and loads in surface runoff from farmland during flood season. The result shows that nitrogen and phosphorus fractions in topsoil, nitrogen and phosphorus concentrations and loads in the runoff are not significantly affected by fertilization. The runoff, soil erosion, particulate nitrogen concentration and load, particulate phosphorus load are significantly affected by crop type. The effect intensities of runoff for various crops is in the order of bare land〉cotton〉corn〉soybean, the effect intensities of particulate nitrogen and phosphorus loads is bare land〉cotton≈corn. The runoff, soil erosion, particulate nitrogen and phosphorus loads are significantly and negatively correlated with the leaf area index. The particulate nitrogen and phosphorus loads are significantly and positively correlated with runoff and soil erosion.
同期刊论文项目
同项目期刊论文
期刊信息
位置：