不同来源有机肥配施尿素对玉米收获后土壤化学性质的影响

M. K. Khalil, Muhammad Owais Khan, Waqar Ali, Mukhtiar Ali, Shuja Ur, R. Qureshi, Farooq Ishaq
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摘要

适当施用肥料可提高作物产量和作物对施用养分的高回收率。某些元素如果以各种形式大量使用,即硝酸盐和磷酸盐,可能对土壤和环境有害。因此,有效施肥对于确保作物在特定生长季节达到成熟是重要的(Okalebo, 1987)。因此,肥料的有效性取决于化学和物理性质、施用速率和方法、土壤和气候条件以及种植的作物品种(Mokwunye和Bationo, 2002年)。近年来,高矿质肥料的使用有所增加,主要是出于经济原因。所使用的无机肥料包括50%尿素、磷酸二铵(DAP)和三超磷酸盐(TSP)肥料(Smalling等人,1997年)。
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Evaluation of Chemical Properties of Post-Harvest Soil of Maize as Affected by Application of Organic Manure of Diverse Sources Along with Urea
Appropriate fertilizer use leads to increased crop yields and high crop recovery of the applied nutrients. Some elements may be hazardous to soil as well as environment if used in extreme quantities in various forms, i.e. nitrates and phosphates. Efficient fertilization is therefore important in ensuring crops attain maturity within specific growing seasons(Okalebo, 1987).Effectiveness of fertilizers therefore depends on the chemical and physical properties, rate and method of application, soil and climatic conditions and the crop species grown (Mokwunye and Bationo, 2002). In recent years, there has been an increased use of high mineral fertilizers, mainly for economic reasons. Examples of inorganic fertilizers used include50%Urea, diammonium phosphate (DAP) and triple super phosphate (TSP) fertilizers (Smalling et al., 1997).
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