Fertilizer Application Method Provides an Environmental-Friendly Nitrogen Management Option for Sugarcane
Journal of Soil Science and Plant Nutrition(2024)
摘要
Nitrogen fertilizer management is an important agricultural tool that must be optimized to promote sustainable practices since the nitrogen-fertilizer recovery by plants (NRP) is low, leading to nitrogen losses to the environment. In sugarcane, N-fertilization has been investigated over the years but little attention has been given to N-fertilizer application methods. Sugarcane crop production and environmental impact regarding N-fertilizer application methods (i.e., applied onto the sugarcane straw layer and incorporated into the soil) were investigated in the present study aiming to achieve an environmental-friendly cropping system. Sugarcane yield and NRP, N2O emissions, relevant components of the soil microbiological community and N-fertilizer retention in soil layers were quantified. The experiment was carried out in field conditions where N-fertilizer application methods using 15N-labelled ammonium nitrate (15NH415NO3) were compared to a control treatment with no N-fertilization. Incorporation of N-fertilizer into the soil increased the sugarcane yield by 17
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关键词
Nitrogen-fertilizer recovery,Labelled nitrogen,AOA,AOB,N2O emission,Sugarcane yield
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