Among integrated crop–livestock systems, forage succession is an advantageous strategy for the use of pasture to feed cattle in periods of low rainfall, as well as for the generation of biomass for the no-till system for the next crop. Different species have different abilities to accumulate nutrients in their biomass, which are then released into the soil through the decomposition of crop residues. This study aimed to evaluate soybean yield in an integrated crop–livestock system in comparison to soybean–maize succession system through the production, decomposition and nutrient accumulation in the biomass. The experiment had a randomized block design with four replicates. The treatments were three cropping systems: integrated crop–livestock with Paiaguas palisadegrass (Brachiaria brizantha cv. BRS Paiaguas), integrated crop–livestock with Tamani guinea grass (Panicum maximum cv. BRS Tamani) and maize grown in succession to soybean. The results showed that the use of the integrated crop–livestock system in the form of forage succession provided greater soil cover and nutrient cycling as a result of the better utilization of the animal's excreta, than the cropping of maize in succession and resulted in higher soybean productivity, thus contributing to agricultural sustainability. Paiaguas palisadegrass and Tamani guinea grass showed a C:N ratio greater than 30:1, indicating slow decomposition of plant residues. The forages accumulated amounts of nutrients in their biomass that met the soybean demand, resulting in higher grain yield.

中文翻译：

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综合作物-畜牧系统与大豆-玉米演替系统中的大豆产量

在综合作物-畜牧系统中，草料演替是一种有利的策略，可以在降雨量少的时候利用牧场喂养牛，以及为下一季作物的免耕系统产生生物量。不同物种在其生物量中积累养分的能力不同，然后通过作物残茬的分解释放到土壤中。本研究旨在通过生物质中的生产、分解和养分积累来评估综合作物-畜牧系统与大豆-玉米演替系统中的大豆产量。该实验采用随机区组设计，重复四次。处理是三种种植系统：综合作物-牲畜与 Paiaguas Palisadegrass (布氏腕掌简历。BRS Paiaguas)，综合作物-牲畜与 Tamani 几内亚草 (大麦穗简历。BRS Tamani）和玉米与大豆相继种植。结果表明，与连续种植玉米相比，以牧草轮作形式使用综合作物-牲畜系统，由于更好地利用动物的排泄物，提供了更大的土壤覆盖和养分循环，并导致大豆产量更高。生产力，从而有助于农业的可持续性。Paiaguas Palisadegrass 和 Tamani 几内亚草的 C:N 比大于 30:1，表明植物残体分解缓慢。牧草在其生物量中积累了大量的营养物质以满足大豆的需求，从而提高了谷物产量。