Alfalfa (Medicago sativa L.) is a perennial legume grass which was cultivated widely on semi-humid areas of the loess plateau.
紫花苜蓿是多年生豆科牧草作物，在黄土高原半湿润区大面积栽培。
The dark loessial soil (Heilutu) is not only a main zonal soil group in the loess plateau of northwestern China, but an ancient cultivated soil.
黑垆土是我国西北黄土侵蚀地区主要的地带性土类，也是一种古老的耕种土壤。
Huangma soil on the plain is the main cultivated soil on the Loess Plateau.
塬地黄麻土是黄土高原的主要土种。
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