Abstract The objective of this study was to determinate dry matter production and macronutrients accumulation in the shoots of soybean plants of determinate and indeterminate types of growth. The experiment was carried out in Dourados, Mato Grosso do Sul, Brazil, in the 2016/17 season. The experimental design was a random block, with two soybean cultivars (BRS 317 determinate and BRS 1001 indeterminate), seven collection times (15, 30, 45, 60, 75, 90 and 105 days after emergence) and four replicates. At each collection, the plants were divided into leaves, stems, branches, pods and grains, and then submitted to laboratory analysis to determine the nutrients contents in each organ. Macronutrient accumulation in both cultivars followed the order: N > K > Ca > P>Mg > S. The indeterminate cultivar produced more dry matter, and had a longer time required for maximum production, than the determinate cultivar. The indeterminate cultivar exported more nutrients than did the determinate cultivar. Thus, the former demanded more attention to replacement of nutrients to the soil.

中文翻译：

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确定和不确定大豆的干物质积累和养分吸收

摘要 本研究的目的是确定确定和不确定生长类型的大豆植物枝条中的干物质产量和常量营养素积累。该实验于 2016/17 赛季在巴西南马托格罗索州的杜拉多斯进行。实验设计是随机区组，有两个大豆品种（BRS 317 确定和 BRS 1001 不确定），七个收集时间（出苗后 15、30、45、60、75、90 和 105 天）和四个重复。在每次收集时，将植物分成叶、茎、枝、豆荚和谷粒，然后提交实验室分析以确定每个器官中的营养成分。两个品种的常量营养素积累顺序为：N > K > Ca > P> Mg > S。不确定品种产生更多的干物质，与确定品种相比，达到最大产量所需的时间更长。不确定品种比确定品种输出更多的养分。因此，前者需要更多地关注土壤养分的替代。