Recent New Zealand research measured major nutrients in farm dairy effluent over a lactation to be about 5 kilograms nitrogen, 1 kilogram phosphorous and 4.5 kilograms potassium for each cow.
最近，新西兰的一项研究发现，奶牛的排泄物中含有重要的营养物，每头奶牛一个哺乳期所产生的排泄物中约含5千克氮， 1千克磷和4.5千克钾。
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