摘要
对近年来国内外有关氮素肥料对地表水、地下水和大气的污染状况及其对蔬菜硝酸盐的污染进行了综述。提出了氮素肥料合理调控的技术途径(包括利用根层土壤剖面硝态氮推荐施氮肥技术、改良作物品种、研制适宜的控效肥和水土保持技术)。
The application of nitrogencontaining fertilizers in agriculture plays an important role in ensuring food-supplying safety in China. However, excessive application of N fertilizers will pollute the environment and edible vegetables. This paper focused on reviewing the pollution of nitrogencontaining fertilizers to surface and ground waters, atmosphere and vegetables. Rational regulation and control routes were proposed, such as: Making recommendation of nitrogen-containing fertilizer rates based on nitrate contents in the soil rooting layers; (2) improving crop varieties; (3) developing appropriate controlled availability fertilizers; and (4) adopting soil conservation techniques.
出处
《土壤通报》
CAS
CSCD
北大核心
2002年第6期471-475,共5页
Chinese Journal of Soil Science
基金
得到广东省自然科学基金项目资助(项目编号:990719)
关键词
氮素肥料
蔬菜
合理调控
环境污染
硝酸盐污染
Nitrogen-containing fertilizers
Environment
Vegetables
Rational regulation and control
