夏薯产量的高低,很大程度上取决于供应夏栽薯苗的强弱、长短和插植的早晚。据试验,每晚栽十天就减产10%左右,并且扦插时间越晚,薯块越长、越小、含粉量也越低。多年来的实践证明,大搞红薯采苗圃,是一项提高夏薯单位面积产量行之有效的措施,它不仅保证夏薯抢时早栽,栽足壮苗,而且解决了春薯因剪苗过多造成严重减产的问题,也为发展 The level of sweet potato production, largely depends on the supply of summer planting potato seedling strength, length and planting sooner or later. According to the test, planting 10 days a day to cut about 10%, and cutting the later, the longer the tuber, the smaller the lower the amount of powder. Practice has proved that over the years, vigorously dig sweet pot nursery, is an effective measure to improve the yield per unit area of ​​sweet potato, which not only ensures that sweet potatoes grab early planting, planted enough seedlings, but also to solve the spring potato cuttings Too many problems that cause serious cuts in production are also for development