地瓜采苗圃是种子田的“种子田”,是繁殖无病瓜种的中心环节。搞好“朝阳沟”采苗圃,既能及时供给夏秋地瓜足够的无病蔓子头,保证夏秋地瓜的早栽密植,提高单产和繁殖良种系数;又可避免在芽瓜上剪蔓,保证芽瓜的全面丰收。栖霞县观里公社林家店大队第二生产队,1974年搞了七分“朝阳沟”采苗圃,折每亩剪蔓12万棵,栽秋种瓜17亩(每亩7,000棵),种瓜早栽了半个月,亩产种瓜2,590斤,比种瓜大丰收的1973 Sweet potato seedling nursery is a seed field “seed fields”, is the central link in the propagation of disease-free melons. Do a good job, “Chaoyanggou” mining nursery, both timely supply of summer and autumn sweet potatoes enough head of disease-free, to ensure that summer and early planting sweet potatoes and sweet potatoes, to improve yield and breeding coefficient of seed; Full harvest of melons. Qixia Commune Lin Qiadian Brigade team second team, in 1974 engaged in seven “Chaoyanggou” mining nursery, fold per mu cut Manchuria, planting autumn melon 17 acres (7,000 trees per acre), planting melon Early planted for half a month, yielding melon 2,590 kg, more than the bumper harvest of 1973