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- W2321617153 abstract "为延长普通尿素的肥效期, 在前期关于风化煤腐殖酸脲酶抑制剂研究的基础上, 采用盆栽培养和田间试验, 进行了玉米专用型腐殖酸长效尿素的肥效研究。结果表明：就玉米产量而言, 尿素与腐殖酸(HA4)的比例以32.5∶1~121.7∶1较为适宜；加工而成的腐殖酸长效尿素(UHAⅢ)对玉米不同生育期土壤脲酶活性的抑制作用在苗期最强, 达24.1%, 拔节期后逐渐减弱；UHAⅢ在玉米后期供氮能力明显高于普通尿素, 土壤中碱解氮含量较普通尿素增加31.58%~32.73%；与普通尿素相比, 施用UHAⅢ后玉米籽粒产量增加40%, 产投比增加40%, N利用率提高39.70%, 表明UHAⅢ比普通尿素肥效高, 适于作玉米专用型长效尿素。" @default.
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- W2321617153 date "2010-01-13" @default.
- W2321617153 modified "2023-10-16" @default.
- W2321617153 title "Study on prolonged effect of humic acid-urea (long-term urea) on maize" @default.
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- W2321617153 doi "https://doi.org/10.3724/sp.j.1011.2009.00651" @default.
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