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奶牛日粮磷的适宜供给量 被引量:2

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摘要 磷是奶牛粪中含量较高的一种矿物质元素.是污染环境的主要元素之一。给奶牛饲喂过量的磷会降低磷的利用率.增加磷向外围环境的排放。导致土壤中磷含量严重超过续耕作物的吸收能力.污染地表层水并引起水体的富营养化.水中磷的过量聚积促进藻类的生长。耗尽大量溶解氧.造成鱼类大量死亡。磷在奶牛场的过量排放所带来的环境污染问题和不可再生磷矿资源的浪费,越来越受到国内外研究学者和政府部门的重视。一些国家通过法律来规定和限制一个农场排放磷的数量。
出处 《中国奶牛》 2008年第5期14-16,共3页 China Dairy Cattle
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