Narrowing row spacing was expected to improve peanut crop performance, but the responses varied depending upon the evaluated environment and the growth habit of the plant. To clarify apparent inconsistencies, two cultivars with contrasting growth habits were sown at 52 cm and 70 cm row spacings in field experiments carried out in four environments. Vegetative and reproductive traits were evaluated. The leaf area index was always higher in the 52 cm than in the 70 cm row spacing, independently of the growth habit. Similarly, the light attenuation coefficient (k) was higher under narrow than under wide rows, but the cultivar with procumbent growth habit had a larger k and increased slightly the intercepted radiation respect to the erect type. These responses of the procumbent cultivar were driven by its lateral arrangements towards neighboring rows and its longer cycle duration. Narrow rows contributed to intercept approximately 14% more radiation than wide rows. These responses determined an improved biomass production through increases in the crop growth rate during the pod set period, with subsequent increases of the radiation use efficiency of this phase. Narrow row spacing enhanced seed and pod yields independently of the growth habit, but the relative importance of each seed yield component varied between cultivars. Seed numbers were more relevant for the erect growth habit, concurrently with the marked increase in total flower numbers of this cultivar. Seed weight was more relevant for the procumbent growth habit. On one hand, the erect growth habit caused a larger relative variation in seed and pod yields across environments than the procumbent one, particularly at narrow row spacing. On the other hand, the erect growth habit showed the lowest yield under wide rows. The small differences in biomass production between growth habits but the large difference in harvest index (procumbent > erect) contributed to an enhanced and more stable seed yield of the procumbent type, particularly when grown under narrow rows and linked to the large seed size of the runner cultivar. Results suggest that farmers should consider reducing row spacing as a way to increase peanut yield in the region under analysis.

预计缩小行距可以提高花生作物的性能，但响应因评估环境和植物生长习性而异。为了澄清明显的不一致，在四种环境中进行的田间试验中，以 52 厘米和 70 厘米的行距播种了两个具有不同生长习性的栽培品种。评价了营养和繁殖性状。52 cm 行距的叶面积指数总是高于 70 cm 行距，与生长习性无关。同样，窄行下的光衰减系数（k）高于宽行下，但生长习性平卧的品种的k更大。并略微增加了直立型的拦截辐射。平卧栽培品种的这些反应是由其向相邻行的横向排列及其较长的周期持续时间驱动的。窄行比宽行有助于拦截大约 14% 的辐射。这些响应决定了通过增加荚果期作物生长率来提高生物量产量，随后增加了该阶段的辐射利用效率。窄行距提高了种子和豆荚产量，与生长习性无关，但每个种子产量组成部分的相对重要性因品种而异。种子数与直立生长习性更相关，同时该品种的总花数显着增加。种子重量与平卧生长习性更相关。一方面，与直立生长习性相比，直立生长习性导致不同环境中种子和豆荚产量的相对变化更大，尤其是在窄行距下。另一方面，直立生长习性在宽行下产量最低。生长习性之间生物量产量的微小差异，但收获指数的巨大差异（俯卧 > 直立）有助于提高和更稳定的平卧型种子产量，特别是在窄行下生长并与大种子尺寸相关的亚军品种。结果表明，农民应考虑减少行距，以此来提高所分析区域的花生产量。与直立生长习性相比，直立生长习性导致不同环境中种子和豆荚产量的相对变化更大，尤其是在窄行距下。另一方面，直立生长习性在宽行下产量最低。生长习性之间生物量产量的微小差异，但收获指数的巨大差异（俯卧 > 直立）有助于提高和更稳定的平卧型种子产量，特别是在窄行下生长并与大种子尺寸相关的亚军品种。结果表明，农民应考虑减少行距，以此来提高所分析区域的花生产量。与直立生长习性相比，直立生长习性导致不同环境中种子和豆荚产量的相对变化更大，尤其是在窄行距下。另一方面，直立生长习性在宽行下产量最低。生长习性之间生物量产量的微小差异，但收获指数的巨大差异（俯卧 > 直立）有助于提高和更稳定的平卧型种子产量，特别是在窄行下生长并与大种子尺寸相关的亚军品种。结果表明，农民应考虑减少行距，以此来提高所分析区域的花生产量。生长习性之间生物量产量的微小差异，但收获指数的巨大差异（俯卧 > 直立）有助于提高和更稳定的平卧型种子产量，特别是在窄行下生长并与大种子尺寸相关的亚军品种。结果表明，农民应考虑减少行距，以此来提高所分析区域的花生产量。生长习性之间生物量产量的微小差异，但收获指数的巨大差异（俯卧 > 直立）有助于提高和更稳定的平卧型种子产量，特别是在窄行下生长并与大种子尺寸相关的亚军品种。结果表明，农民应考虑减少行距，以此来提高所分析区域的花生产量。