Abstract Reuse of treated wastewater effluent for crop irrigation can be a promising strategy to substitute/reduce chemical fertilizers and mitigate contamination of water environment. The effect of the effluent irrigation strategies on crop yield and nitrogen (N) loss to the environment have not been yet well explored. In the present study, a soil column monitoring experiment was conducted for over two years (2016–2017) to assess the effect of domestic sewage tail water (DSTW) irrigation on rice growth and N-loss. DSTW irrigation was established substituting N fertilizer at percentages of 15 %, 30 % and 45 % (namely N3S1, N2S2 and N1S3) with a total nitrogen (TN) input of 210 kg·hm−2; controls with conventional fertilizer (N210) and no fertilizer (N0) but tap water irrigation were also set up. A field plot experiment was also conducted using the same treatments in 2017. The results of the soil column experiment showed that the grain yield from treatments with different proportions of DSTW and N fertilizer were no lower than those subjected to conventional fertilizer in both years. The NH3 volatilization from the treatments using reclaimed DSTW accounted for 20.9 %–34.4 % TN in 2016, but this fell to 6.9 %–16.1 % in 2017. Compared with N210, the DSTW irrigation treatment (N1S3) significantly reduced NH3 emissions by 32.8 %–61.3 % over the two years (p

中文翻译：

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优化应用污水尾水灌溉获得的高产和缓解稻田氮损失

摘要 将处理过的废水回用于农作物灌溉是替代/减少化肥和减轻水环境污染的一种有前景的策略。污水灌溉策略对作物产量和环境中氮 (N) 损失的影响尚未得到很好的探索。在本研究中，进行了两年多（2016-2017）的土柱监测实验，以评估生活污水尾水（DSTW）灌溉对水稻生长和氮流失的影响。建立DSTW灌溉，以15%、30%和45%的比例（即N3S1、N2S2和N1S3）替代氮肥，总氮（TN）输入量为210 kg·hm-2；还设置了常规施肥（N210）和不施肥（N0）但自来水灌溉的控制。2017年还进行了相同处理的田间小区试验。土柱试验结果表明，不同比例DSTW和N肥处理的籽粒产量均不低于常规施肥处理。2016 年使用再生 DSTW 处理的 NH3 挥发占 TN 的 20.9%–34.4%，但在 2017 年下降到 6.9%–16.1%。与 N210 相比，DSTW 灌溉处理 (N1S3) 显着减少了 32% 的 NH3 排放。 –61.3 % 两年内 (p