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- W1982160147 abstract "The efficient use of water and N represents a primary concern to agricultural production in Northwest China. The objective of this study was to assess the impacts of irrigation and fertilization on water and N use, soil volatilized NH 3 , soil NO 3 leaching, and NO 3 transfer in soil profiles. A 2‐yr field experiment was conducted to assess the separation of N fertilizer and water with alternating furrow irrigation (SNWAFI) and conventional irrigation and fertilization (CIF) in a maize ( Zea mays L.) production system. The yields with SNWAFI were 10 to 16% greater than with CIF. Compared with CIF, SNWAFI increased water use efficiencies (WUEs) by 13 to 33%, agronomic efficiency of fertilizer N by 36 to 56%, and NO 3 − –N in the upper soil layers (0–60 cm) by 30 to 60%. However, SNWAFI reduced NO 3 − –N in the deeper soil layers (60–200 cm) by 8 to 44% compared with CIF. The use of SNWAFI also decreased soil NH 3 emission with the combination with lower irrigation (40 mm) and N rate (100 kg N ha −1 ), which indicated that SNWAFI emitted less soil NH 3 than CIF. Therefore, compared with CIF, SNWAFI increased maize yield WUE and N use efficiency, reduced N leaching, and curtailed soil NH 3 loss with appropriate irrigation and N rates. The use of SNWAFI, leading to better spatial management of irrigation water and N application, can provide both agronomic and environmental benefits." @default.
- W1982160147 created "2016-06-24" @default.
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- W1982160147 date "2014-07-01" @default.
- W1982160147 modified "2023-10-16" @default.
- W1982160147 title "Management of Furrow Irrigation and Nitrogen Application on Summer Maize" @default.
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- W1982160147 doi "https://doi.org/10.2134/agronj13.0367" @default.
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