The optimal row spacing aims to maximize profitability by balancing the reduction in production costs from a wider row spacing against a potential decline in yield and increased weed pressure. A wider row spacing should increase area seeded per day, improve residue flow around seeder openers and the success of seeding between stubble rows. This study investigated the feasibility of a wider row spacing by studying the effects of row spacing (25, 30, 35, 40 cm) and N fertilizer rates (20, 40, 80, 120, 160 kg N ha⁻¹) on development, yield, and quality of spring wheat (Triticum aestivum L.). The study was a two factorial in randomized complete block design. The experiment was conducted at Indian Head, SK, from 2013 to 2016. Row spacing affected plant, head, and seed density; however, the effects were generally inconsistent. One exception was biomass, which decreased as the row spacing increased in 3 of the 4 yr. Grain yield declined in 1 of the 4 yr, with the largest portion of the decrease occurring as the row spacing increased from 30 to 40 cm. As expected, increasing N rates produced greater grain yield, biomass, and grain protein. In conclusion, this study found that in most years the row spacing can be widened past 30 cm without a negative impact on grain yield in a no‐till cropping system. However, to determine the probability of a grain yield decrease as row spacing is increased, a larger study over a wider geographic region is needed.

中文翻译：

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免耕小麦更宽的行距和建议施氮的可行性

最佳行距旨在通过平衡行距较宽的生产成本的减少与产量的潜在下降和杂草压力的增加之间的平衡，来最大限度地提高获利能力。较宽的行距应增加每天播种的面积，改善残渣开松器周围的残留流量，并提高茬之间的播种成功率。这项研究通过研究行距（25、30、35、40 cm）和氮肥用量（20、40、80、120、160 kg N ha ^-1）对发育的影响，研究了行距更宽的可行性，春小麦的产量和品质（普通小麦）L.）。该研究是随机完整区组设计的两个因素。该实验于2013年至2016年在SK印度之角进行。行距影响植物，头部和种子密度。但是，效果通常不一致。一个例外是生物质，它在4年中的3年中随着行距的增加而减少。粮食产量在4年的1年中下降，其中最大的下降发生在行距从30厘米增加到40厘米时。不出所料，氮含量的增加会产生更多的谷物产量，生物量和谷物蛋白。总之，这项研究发现，在免耕种植系统中，大多数年份行距可以扩大到30 cm以上，而不会对谷物产量造成负面影响。但是，要确定随着行距的增加，谷物产量下降的可能性，