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首页> 外文期刊>Plant and Soil >Nitrogen management in 'adequate' input maize-based agriculture in thederived savanna benchmark zone of Benin Republic
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Nitrogen management in 'adequate' input maize-based agriculture in thederived savanna benchmark zone of Benin Republic

机译：贝宁共和国衍生的热带稀树草原基准区“充足”以玉米为原料的农业中的氮管理

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摘要

Although the West-African moist savanna zone has a high potential for crop production, yields on farmers' fields are, on average, far below this potential, mainly due to the low use of external sources of nutrients. Since the mid-1990s, it has become clear that in order to upgrade crop production to levels needed to sustain the growing population without further degrading the soil resource base, inorganic fertilizers are required. Due to the physico-chemical nature of these soils and the relatively high cost of inorganic fertilizers, a general consensus exists in the research and development community that these inorganic inputs need to be complemented with organic matter. Here, we explore options to produce organic matter in-situ and evaluate the impact of combining inorganic and organic sources of N on maize yields, focusing on the densely populated derived savanna (DS) benchmark of Benin Republic. Although most of the farmers (93%) in this benchmark use inorganic fertilizer, applications rates are low (on average, 27 kg N ha(-1)). A significant response to N was observed for 96% of the studied farmers' fields.
机译：尽管西非湿润热带稀树草原地区具有很高的作物生产潜力，但平均而言，农民田间的单产远低于这一潜力，这主要是由于外部养分来源的使用量少。自1990年代中期以来，很明显，为了在不进一步降低土壤资源基础的情况下将农作物产量提高到维持不断增长的人口所需的水平，就需要无机肥料。由于这些土壤的物理化学性质和无机肥料的相对较高成本，研究与开发界已达成普遍共识，即这些无机投入物需要补充有机物。在这里，我们将重点探讨贝宁共和国人口稠密的衍生大草原（DS）基准，探讨就地生产有机物质的方案，并评估将无机和有机氮源结合使用对玉米产量的影响。尽管在该基准中大多数农民（93％）使用无机肥料，但施用量较低（平均27 kg N ha（-1））。在研究的96％的农民田地中，观察到对氮的显着响应。

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