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榆阳区畜牧局和市羊产业协会把引进试种优良草种作为一项重要工作, 2002年在协会租赁牛家梁农场榆卜界基地上,
Yuyang Animal Husbandry Bureau and the City of Sheep Industry Association introduced the introduction of good varieties of grass as an important task in 2002, the Association lease Niujialiang farm elm community base,