The aim of this study was to evaluate straw production provided by maize and Urochloa ruziziensis grown solely and intercropped, as well as the accumulation of nitrogen and its residual effect when applied as a topdressing fertilizer to the previous crop (common bean) under no-tillage. Experiments were conducted for two crop seasons in a randomized block design, in a split-plot scheme, with four repetitions. We evaluated three cropping systems containing maize and U. ruziziensis solely and intercropped (summer crop) in succession with irrigated common beans (winter–spring crop), managed with nitrogen topdressing combinations with 90 kg N ha−1 by urea. Cropping systems with maize and U. ruziziensis solely or intercropped promoted sufficient straw production under the no-tillage system. Urochloa ruziziensis solely or intercropped with maize achieved full soil surface coverage and higher straw yield (8.3 to 9.5 t ha−1) compared to sole maize (7.1 to 7.8 t ha−1), thus favoring the implementation and maintenance of the no-tillage system. The quality of straw produced in crop succession systems was improved by nitrogen fertilizer applied to the previous common bean crop, which changed their nutrient content and nitrogen accumulation.

中文翻译：

---

作物管理和免耕制度对玉米作物粮草产量的影响

本研究的目的是评估单独种植和间作的玉米和 Urochloa ruziziensis 提供的秸秆产量，以及在免耕下作为前茬作物（普通豆类）的追肥施用时氮的积累及其残留效应. 在随机区组设计中，在裂区方案中对两个作物季节进行了实验，重复四次。我们评估了三种单独包含玉米和 U. ruziziensis 的种植系统，并与灌溉普通豆类（冬春季作物）连续间作（夏季作物），通过尿素施氮和 90 kg N ha-1 的组合进行管理。在免耕系统下，单独或间作玉米和 U. ruziziensis 的种植系统促进了充足的秸秆生产。与单作玉米（7.1 至 7.8 t ha-1）相比，单独或与玉米间作的 Urochloa ruziziensis 实现了全土壤表面覆盖和更高的秸秆产量（8.3 至 9.5 t ha-1），从而有利于免耕的实施和维护系统。作物演替系统中生产的秸秆质量通过对先前普通豆类作物施氮肥而得到改善，这改变了它们的养分含量和氮积累量。