先前的研究已明确,增大马铃薯薯块的大小和降低株距可增加密度和薯块数量,从而使马铃薯产量增加,不过薯块变小。因此,生产种薯时往往采用较大的种薯和较高的密度。可足播种量较大,尤其是两种措施共用时播量更大。高播量下增进了芽间和薯块间的竞争,因提高播量而得到的产量增益可能抵销不了种薯的额外投资效益。当诸如水分等因子限制生长时,这种竞争更为剧烈。由于茎数与种薯重量不是简单的倍数关系,而且马铃薯块茎存在着 Earlier studies have identified that increasing the size and spacing of potato tubers increases the density and amount of tubers, thereby increasing the potato yield but smaller potato tubers. As a result, larger seeds and higher densities are often used in seed production. Podcasting can be larger, especially when the two measures share a greater amount of broadcast. The competition between shoots and tubers was enhanced under high sowing, and the yield gains due to increased sowing could not offset the additional investment benefits of seed tubers. This competition is even more intense when growth is limited by factors such as moisture. Because the number of stalks and seed weight is not a simple multiples, and potato tubers exist