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- W2311066840 abstract "Abstract Intensive vegetable production exhibits contrasting characteristics of high nitrous oxide (N 2 O) emissions and low nitrogen use efficiency ( NUE ). In an effort to mitigate N 2 O emissions and improve NUE , a field experiment with nine consecutive vegetable crops was designed to study the combined effects of nitrogen (N) and biochar amendment and their interaction on soil properties, N 2 O emission and NUE in an intensified vegetable field in southeastern China. We found that N application significantly increased N 2 O emissions, N 2 O–N emission factors and yield‐scaled N 2 O emissions by 51–159%, 9–125% and 14–131%, respectively. Moreover, high N input significantly decreased N partial factor productivity ( PFPN ) and even yield during the seventh to ninth vegetable crops along with obvious soil degradation and mineral N accumulation. To the contrary, biochar amendment resulted in significant decreases in cumulative N 2 O emissions, N 2 O–N emission factor and yield‐scaled N 2 O emissions by 5–39%, 16–67% and 14–53%, respectively. In addition, biochar significantly increased yield, PFPN and apparent recovery of N ( ARN ). Although without obvious influence during the first to fourth vegetable crops, biochar amendment mitigated N 2 O emissions during the fifth to ninth vegetable crops. The relative effects of biochar amendments were reduced with increasing N application rate. Hence, while high N input produced adverse consequences such as mineral N accumulation and soil degradation in the vegetable field, biochar amendment can be a beneficial agricultural strategy to mitigate N 2 O emissions and improve NUE and soil quality in vegetable field." @default.
- W2311066840 created "2016-06-24" @default.
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- W2311066840 date "2016-05-24" @default.
- W2311066840 modified "2023-10-10" @default.
- W2311066840 title "Dynamic responses of nitrous oxide emission and nitrogen use efficiency to nitrogen and biochar amendment in an intensified vegetable field in southeastern China" @default.
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- W2311066840 doi "https://doi.org/10.1111/gcbb.12356" @default.
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