> size="2" face="Verdana">The cultivation of cover crops can optimize the input of organic material and nutrients and protect the soil from erosion, while the N is one of the most required nutrient by agricultural crops and may become a limiting fator in its productivity. In this context, an experiment was carried out to evaluate the influence of three different legumes used as cover crops on morphological components and production of corn grown in succession under no-tillage system, in the absence and presence of mineral N fertilization (80 kg N ha-1), in the form of ammonium sulfate. This study was conducted in an Oxissol of the Coastal Tablelands in the State of Alagoas. The components of maize production showed better results in succession to Crotalaria spectabilis. Significant interaction was found between green manure and N fertilization, resulting in higher grain productivity.
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机译：> size =“ 2” face =“ Verdana”>覆盖作物的种植可以优化有机物质和养分的输入，并保护土壤免受侵蚀，而N是农作物最需要的养分之一并可能成为其生产力的极限。在此背景下，进行了一项实验，以评估在不存在和不施用矿物氮（80千克氮）的情况下，免耕制度下三种豆科植物作为农作物对玉米连续形态形态和产量的影响。 ha -1 ），以硫酸铵的形式存在。这项研究是在阿拉戈斯州沿海平原的Oxissol中进行的。玉米生产的各组成部分依次表现出 Calalaria spectabilis 。绿肥和氮肥之间存在显着的相互作用，从而提高了谷物的生产力。
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