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一、适期早播,培育健壮母根壮苗是保证甜菜露地采种高产的基础,首先要选择土地平坦,能灌能排的砂壤土,连片育苗,苗床与大田之比为1:6为宜,施足基肥,精整苗床。耕翻前亩施土杂肥3000公斤,过磷酸钙75公斤,标准氮肥100公斤,耕深8寸,细耙整平,做低沟高畦,并用毒土防治地下害虫,苗床东西向,畦面宽5.1尺,长度视情况而定,畦间开好1市尺宽尖底灌排两用沟,地头田边开好排水沟。播种日
First, the appropriate period of early sowing, nurturing robust root nursery stock is to ensure high-yielding bee-planted open-pit basis, first of all to choose a flat land, irrigation can row of sandy loam row, seedling nursery, seedbed and field ratio of 1: 6 Should, Shizujifei, finishing seedbed. Tillage turned over before the miscellaneous soil fertilizer 3000 kilograms, superphosphate 75 kilograms, 100 kilograms of standard nitrogen fertilizer, tillage 8-inch, fine rake leveling, do low ditch talus, and use of soil to control underground pests, seedbed east-west, noodles 5.1 feet wide, depending on the length of the case, 畦 between the open a wide ruler at the end of irrigation and drainage ditches ditch, headland edge open drain. Sowing day