灌水器埋深对红壤区涌泉根灌双点源入渗水氮运移的影响
灌水器埋深对红壤区涌泉根灌双点源入渗水氮运移的影响
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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】研究红壤区涌泉根灌双点源入渗土壤水氮运移分布规律，为提高涌泉根灌水氮利用效率和灌水器合理埋深提供理论依据。【方法】在大田通过灌水器埋深分别为30、45、60 cm的硝酸铵钙溶液入渗试验，研究了灌水器埋深对涌泉根灌双点源交汇入渗土壤的入渗能力、湿润锋运移距离、土壤水分以及铵态氮和硝态氮运移特性的影响，并建立了红壤涌泉根灌土壤累计入渗量及湿润锋运移距离与入渗历时的关系模型。【结果】灌水器埋深分别为30、45和60 cm时，红壤累计入渗量和稳定入渗率分别为18.84 L和0.035 cm/min、17.09 L和0.031 cm/min以及14.37 L和0.024 cm/min，即灌水器埋深越大，土壤的累计入渗量和稳渗率就越小，且累计入渗量与入渗历时之间均符合幂函数关系；灌水器埋深分别为...
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灌水器埋深对红壤区涌泉根灌双点源入渗水氮运移的影响
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TN_cdi_wanfang_journals_ggps202107002
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https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_ggps202107002
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1672-3317
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10.13522/j.cnki.ggps.2020146
