尼日利亚北部土壤中肥料残留对作物生产性能的影响:综述。

N. A. Loks, W. Manggoel, J. Daar, D. Mamzing, B. W. Seltim
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引用次数: 9

摘要

本研究旨在回顾尼日利亚北部热带稀树草原农业生态区土壤中肥料残留物及其对作物生产性能的影响。在尼日利亚北部一些地区进行的研究表明,化肥对土壤有残留影响,严重影响作物生产。多年来,氮、磷和钾的年度施用显著影响了交换阳离子,从而影响了作物产量。随着施肥量的增加,肥料养分利用效率降低,在土壤中留下的添加养分比例越来越大。这种情况在热带稀树草原地区更为突出,因为那里通常降雨不足,风化率高。因此,当土壤的养分含量已经足够时,向土壤中添加肥料很可能对土壤和作物都造成损害。因此,在尼日利亚北部稀树草原地区使用有机和无机肥料应根据具体的土壤诊断来确定添加养分的需要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The effects of fertilizer residues in soils and crop performance in northern Nigeria: a review.
This study seeks to review the effects of fertilizer residues in soils and on crop performance in the savanna agro-ecological zone of northern Nigeria. Studies conducted in some parts of northern Nigeria revealed that there are residual effects of fertilizers on soils and they significantly affect crop performance. The annual applications of nitrogen, phosphorus and potassium over the years significantly affected exchangeable cations and consequently crop yields. As the fertilizer rates are increased, the efficiency of fertilizer nutrient use decreases, leaving behind in the soil an increasing proportion of the added nutrients. This is more prominent in the savanna zone where rainfall is generally inadequate and the rate of weathering is high. Hence, when nutrient content of the soil is already sufficient, adding fertilizer to the soil is likely to be damaging to both the soil and the crop. Consequently, the use of organic and inorganic fertilizers in the savanna zone of northern Nigeria should be base on specific soil diagnoses to determine the need for adding nutrients.
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