The Effect of Deep Placement of Basal Nitrogen Fertilizer on Gaseous Nitrogen Losses and Nitrogen Use Efficiency of Paddy Fields under Water-Saving Irrigation in Northeast China
نویسندگان
چکیده
As a widely implemented irrigation regime for paddy fields, water-saving (WSI) is capable of ensuring water resource security and improving nitrogen use efficiency (NUE). Higher gaseous losses (GNL) lead to low recovery rate basal nitrogen, this the primary reason that restricts further improvements in NUE under WSI. The deep placement fertilizer (DPN) considered an efficient agricultural management measure reduce GNL. However, effects WSI combined with on NUE, GNL, rice yield fields remain largely unknown. In study, 2-year field experiment was conducted GNL (N2O emissions NH3 volatilization), yield. Four treatments were utilized: (i) conventional flooding + broadcast (110 kg N hm−2, CFN); (ii) WSN); (iii) (99 WSN1); (iv) (88 WSN2). results showed treatment ranged from 5.29 10.67 hm−2. Deep mitigated CFN significantly higher than those WSN1 WSN2 by 26.9% 54.0% 2021 14.4% 23.3% 2022, respectively (p < 0.05). Under WSI, reduced primarily via reduction volatilization. NH3-N lower WSN 22.4% 21.6% 4.6% 1.5% respectively. Moreover, each CFN. These changes exhibited similar trends 2022. demonstrated effective practice ensure food environmental
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ژورنال
عنوان ژورنال: Agronomy
سال: 2023
ISSN: ['2156-3276', '0065-4663']
DOI: https://doi.org/10.3390/agronomy13030842