我们把半坑式高温沤肥和育甘薯苗结合起来,既能高温堆肥,又育了薯苗,经两年试验,效果较好。雨水节建床育苗,7天出苗,9天齐苗,17天剪第一茬,以后每隔6天剪一次苗。全床未发现冻烂、烧烂薯种现象,苗多苗壮。这种苗床的建造与管理方法如下:一、床底:选择背风向阳地势高燥、地下水位低、土层厚的地方,挖一个长方形的坑,东西长10—20尺,南北宽6尺,深1.5尺,四壁削直,底面平坦。二、通气沟:在床底中间从东壁到西壁挖一条长 We put the half-pit high temperature fertile sweet potato and sweet potato seedlings together, both high-temperature compost, and raised seedlings, after two years of trials, the effect is better. Rainy day to build bed nursery, 7 days germination, 9 days Qi Miao, 17 days cut the first crop, after cut once every 6 days Miao. The whole bed was not found rotten, burning potato phenomenon, more seedlings strong. This bed seedbed construction and management methods are as follows: First, the bed bottom: Select the leeward sunny high dry, low groundwater, thick soil, dug a rectangular pit, things 10-20 feet long, 6 feet wide north-south, 1.5 feet deep, straight cut on four walls, flat bottom. Second, the ventilation groove: in the middle of the bed from the east wall to the west wall to dig a long