基于WHCNS模型的黄河流域麦田氮淋失与氨挥发模拟
基于WHCNS模型的黄河流域麦田氮淋失与氨挥发模拟
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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【目的】探究WHCNS模型对黄河流域麦田土壤氮淋失与氨挥发模拟的适用性以及不同水氮处理对土壤氮淋失和氨挥发的影响。【方法】利用田间实测数据对WHCNS模型进行率定与验证，基于校验后的模型对冬小麦返青—成熟期土壤氮淋失、氨挥发进行模拟，采用CRITIC-TOPSIS法进行水氮优选。【结果】0~100 cm土层土壤含水率、硝态氮量和0~60 cm土层土壤氨态氮量的模拟值与实测值之间的一致性指数（d）和决定系数（R2）分别介于0.84~0.97和0.67~0.99。单次施氮后7 d内的土壤硝态氮累积淋失量随着灌水次数的增加呈先增加后降低的变化趋势。不同处理施氮后7 d内的氨挥发量占氨挥发总量的93.0%~98.2%。【结论】黄河流域冬小麦最优的水氮处理为施氮量220 kg/hm2，灌水下限70%θ...
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基于WHCNS模型的黄河流域麦田氮淋失与氨挥发模拟
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TN_cdi_wanfang_journals_ggps202409014
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https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_ggps202409014
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1672-3317
DOI
10.13522/j.cnki.ggps.2023574
