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合理密植是“农业八字宪法”的中心。要获得甘薯丰产,必须每亩有足够的株数,促使单株多结大薯,协调羣体与个体的发展,统一地上部与地下部生长的矛盾。目前山东省大部分地区亩栽2,000株左右,但也有些地区亩栽1,500株以下(7);近年来,又有人认为亩栽7,000株对增产有利。目前国内对甘薯栽秧密度的意见颇不一致,对栽秧方式也有不同的看法。为了探讨甘薯合理栽秧密度和适宜的壠栽方式,研究羣体与个体的发展动态,特进行此项试验,现将初步结果加以整理,以供生产参考。
Reasonable and close planting is the center of the “Eight Character Constitution of Agriculture.” To obtain sweet potato yield, there must be sufficient number of plants per acre to promote single plant multi-node big potato, coordinate the development of groups and individuals, and unify the contradiction between the growth of aboveground and underground parts. At present, there are about 2,000 mu planted in most parts of Shandong Province, but there are also some 1,500 planted acres in some areas (7). In recent years, some people think that planting 7,000 planted acres is good for increasing output. At present, the opinions on planting density of sweet potato in China are quite inconsistent and have different opinions on the way of planting seedlings. In order to explore the rational planting density of sweet potato and suitable planting mode, research group and individual development trends, especially for this experiment, the preliminary results are now sorted for production reference.