莞根(Brassica rapa L.)是一种适应于高寒地区栽培的高产、优质块根类饲料作物。它多汁、营养丰富、含糖量高、适口性强,便于青贮或冻藏。用莞根补饲母畜,有促进泌乳的效能。有关莞根栽培技术的研究,已有不少报导,但有关生长动态的报导不多。现将我们所观测的结果,汇总于后。 Wandan (Brassica rapa L.) is a high-yielding, high-quality root-crop feed adapted to the cultivation in the alpine region. It is juicy, nutrient-rich, high sugar content, palatability, easy to silage or frozen storage. Supplemented with Wandan dams, there is to promote the effectiveness of lactation. There have been many reports on the research on the cultivation techniques of Wandou root, but there are not many reports on the growth dynamics. Now we observe the results, summarized later.