Intercropping increases resource capture due to species complementarities, but it is not clear to which extent intercropping also affects the redistribution of carbohydrates and nitrogen (N) within the plant. Here, we examined in two years field experimentation the accumulation and translocation of dry matter and N in maize and peanut in pure stands and intercrops at five N input levels. Post-anthesis dry matter accumulation in the cob was on average 117 g plant⁻¹ in sole maize and 159 g plant⁻¹ in intercropped maize, of which post-anthesis dry matter translocation contributed 9 and 19 g plant⁻¹, respectively. Intercropping increased post-anthesis N accumulation of maize from 0.77 to 1.29 g N plant⁻¹ and N translocation to cobs from 0.94 to 1.16 g N plant⁻¹, but it decreased the contribution of post-anthesis N translocation to grain from 54.0% in sole maize to 46.9% in intercropped maize. The kernel number was 486 per cob in sole maize and 609 per cob in intercropped maize, and the thousand-kernel weight was 320 g and 336 g, respectively. In peanut, intercropping decreased post-anthesis dry matter accumulation from 14.8 to 9.4 g plant⁻¹, post-anthesis N accumulation from 0.37 to 0.24 g N plant⁻¹ and N translocation to the pods from 0.25 to 0.14 g N plant⁻¹. The pod number per plant in peanut decreased from 10.6 in the sole crop to 8.6 in intercropping. Nitrogen fertilization increased dry matter accumulation and translocation in intercropped maize, but had little impact in sole maize or in sole or intercropped peanut. In both species, dry matter translocation to the reproductive organs contributed slightly to the yield, while the post-anthesis contribution of N translocation was of the same order of magnitude as that of N uptake.

由于物种互补性，间作增加了资源捕获，但尚不清楚间作在何种程度上也影响植物内碳水化合物和氮 (N) 的重新分配。在这里，我们在两年的田间试验中检查了在五个氮输入水平下纯林和间作玉米和花生中干物质和氮的积累和转运。花后玉米穗轴中的干物质积累在单一玉米中平均为 117 g 植株^-1 ，在间作玉米中平均为159 g 植株^-1，其中开花后干物质易位分别贡献了 9 和 19 克植株^-1。间作使玉米的开花后氮积累从 0.77 增加到 1.29 g N 植物^-1和 N 从 0.94 到 1.16 g N 植物^-1易位到玉米穗轴，但它将花后 N 易位对谷物的贡献从单一玉米的 54.0% 降低到间作玉米的 46.9%。单粒玉米粒数为486粒，间作玉米粒粒数为609粒，千粒重分别为320g和336g。在花生中，间作使开花后干物质积累从 14.8 减少到 9.4 g 植物^-1，开花后 N 积累从 0.37 减少到 0.24 g N 植物^-1，N 向豆荚的转移从 0.25 减少到 0.14 g N 植物^-1. 花生单株荚数从单作的10.6个减少到间作的8.6个。施氮肥增加了间作玉米干物质积累和转运，但对单种玉米或单种或间作花生影响不大。在这两个物种中，向生殖器官的干物质转运对产量的贡献很小，而氮转运的花后贡献与氮吸收的贡献在同一数量级。