The process of mixing decaying leaves , manure and other nutritive matter to improve and fertilize soil
2.
The most amazing fact about this inverted life pyramid is that only 2 % of the nutritive matter ends up in swimming fish
3.
Taking the suspended sediment as the sand for the experiment and the normal nutritive matter - phosphorus in water as the contamination for simulation , the effect on the equilibrium adsorption of phosphorus from the initial concentration of the water phase phosphorous pollutant and the influence of sediment content on the isothermal adsorption of phosphorus are studied through the experiment
4.
People in the past regard the fish meal as one protein fodder source only , now , they use it in various kinds of fodder of animal , on only use it as the source of protein , energy , essential amino acid , essential fatty acid , but as nutritive matter resource to guarantee the health of animal and the mankind
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