【摘要】 <正> 一、前言苜蓿(Medicago sativa L.)在庆阳地区栽培历史悠久。它对当地发展畜牧业、改良土壤以及保持水土等方面起到了极大的作用。曾有一些学者先后对庆阳地区的苜蓿作过多次调查、研究工作,但对苜蓿的引种选育等项工作在文献中尚少见到。为了在当地选育出产草量高、生活力更多还原

【Abstract】 106 warieties of alfalfa were collected and iatroducted in 1983.During the three year’s research and comparison 20 varieties have been selected based on the high restistance to disease and outpt in yield. The experiment result has provided us with scientific basis, by which it is possible to plant alfalfa in a vast area of the Loess Flateau更多还原