Agronomic production practices associated with high-yielding soybean [Glycine max (L.) Merr.] in North Carolina can be used to inform production recommendations across the southeastern United States. The 877 individual entries submitted from 2002 to 2019 into the North Carolina Soybean Yield Contest (SYC) were analyzed with the objectives to describe the production practices associated with high-yielding soybean in North Carolina and to identify management strategies for increasing soybean yield in the southeastern U.S. region. From 2002 to 2019, SYC entries averaged 4,379 kg ha^–1. The three most important management practices influencing soybean yield were maturity group (MG), foliar fungicide use, and planting date. Using a MG IV or earlier variety provided a 1,199 kg ha^–1 yield advantage across all entries. When MG ≤ IV was used, foliar fungicide use provided a 754 kg ha^–1 yield protection and when MG > IV was used fungicide use provided a 640 kg ha^–1 yield protection. Planting dates earlier than 12 May generally provided more yield benefit when earlier maturing varieties were used. Herbicide and insecticide use, irrigation, fungicidal and inoculant seed treatments, tillage, and row spacing were less important predictors of soybean yield. Soybean producers can implement several of these identified management strategies without additional economic investment in an effort to increase soybean yield and profitability in the southeastern U.S. region.

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最大限度提高大豆产量的生产实践：我们从北卡罗来纳州大豆产量竞赛中学到了什么

北卡罗来纳州与高产大豆 [ Glycine max (L.) Merr.]相关的农艺生产实践可用于为美国东南部的生产建议提供信息。对 2002 年至 2019 年提交给北卡罗来纳州大豆产量竞赛 (SYC) 的 877 个个人参赛作品进行了分析，目的是描述与北卡罗来纳州高产大豆相关的生产实践，并确定提高东南部大豆产量的管理策略美国地区。从 2002 年到 2019 年，SYC 条目平均为 4,379 kg ha ^–1。影响大豆产量的三个最重要的管理措施是成熟组 (MG)、叶面杀菌剂的使用和种植日期。使用 MG IV 或更早品种提供 1,199 公斤公顷^–1在所有条目中产生优势。当使用 MG ≤ IV 时，叶面杀菌剂的使用提供了 754 kg ha ^{–1 的}产量保护，而当使用 MG > IV 时，使用杀菌剂提供了 640 kg ha ^{–1 的}产量保护。如果使用早熟品种，早于 5 月 12 日的种植日期通常会提供更多的产量收益。除草剂和杀虫剂的使用、灌溉、杀真菌剂和接种剂种子处理、耕作和行距对大豆产量的预测不太重要。大豆生产商可以在没有额外经济投资的情况下实施其中几个已确定的管理策略，以提高美国东南部地区的大豆产量和盈利能力。