Evaluation of phosphorus and nitrogen balances as an indicator for the impact of agriculture on envi

• 作 者: Renata Gaj Nacer Bellaloui
• 机 构: CropGeneticsResearchUnit,DepartmentofForestryNaturalFoundation
• 出 处: 农业科学(英文)
• 发表日期: 2012年2期
• 关键词: Nitrogen PHOSPHORUS NUTRIENT Efficiency NUTRIENT AVAILABILITY NUTRIENT BUDGET Ni

The objective of this research was to quantify the changes of nitrogen (N) and phosphorus (P) balances in Poland and Mississippi (MS), USA. Nutrient balances were calculated as difference between input and output in the agricultural system according to Or