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qing si mu cao de shou huo yu chu cang
Author(s): 
Pages: 24
Year: Issue:  11
Journal: Farm Machinery

Keyword:  牧草草地青饲营养价值储存单位面积收获澳大利亚储藏农牧业;
Abstract: <正> 我国是一个农牧业大国,但大牲畜牧业水平还很低,除了少部分大型牧场有青储玉米外,绝大多数是储存干草来解决冬季饲料问题。我国草地总面积达4亿hm~2,占全国陆地总面积的41.7%,按国土拥有草地计算高居世界第二位。而我国草地年产肉量仅为世界水平的30%多,单位面积草地产值只相当于澳大利亚的1/10,美国的1/20,荷兰的1/50。如此低下的产值除了牲畜品种不
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