温室滴灌施肥条件下土壤硝态氮的运移及分布特征
温室滴灌施肥条件下土壤硝态氮的运移及分布特征
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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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为了揭示不同滴灌施肥方式对日光温室土壤硝态氮运移及分布的影响,以番茄为供试作物,选择漫灌为对照（CK）,研究在3种施肥处理和4种灌水量条件下硝态氮的运移及在各土层的分布情况。结果表明,土壤硝态氮量随灌水量和施肥量的增加而增加,随土层深度的增加而逐渐减少。土壤硝态氮主要分布在0~40 cm土层,占试验土层总量的82%~92%。与大水高肥（W_1F_3）处理相比,节水节肥（W_4F_1）处理下土壤剖面硝态氮累积量减少了36.65%。与CK相比,节水节肥（W_4F_1）处理下40~60 cm土层硝态氮累积量减少了53.42%;与大水高肥（W_1F_3）处理相比,W_4F_1处理下40~60 cm土层硝态氮累积量减少了62.18%。在本试验条件下,较习惯施肥量减30%、灌水量减50%的处理是可行的,...
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温室滴灌施肥条件下土壤硝态氮的运移及分布特征
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TN_cdi_proquest_journals_3098248639
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https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_proquest_journals_3098248639
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1672-3317
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10.13522/j.cnki.ggps.2017.12.008
