“theory of nutrient returns”的概念、定义、翻译、参考文献-科学参考

单词	theory of nutrient returns
释义	theory of nutrient returns Encyclopedia 农学[肥料养分效率]释 theory of nutrient returns养分归还学说为维持土壤肥力而必须归还作物从土壤中取走养分的理论。即植物收获物从土壤带走的养分，必需“返还”至土壤才能维持土地生产力。
随便看	risk of the second kind risk of the third kind risk on hazards of exotic species risk perception risk perception in the commission of crime risk point risk predictability training risk prediction risk preference risk premium risk prevention of collection risk priority number risk profile risk rerception risk retention risk return tradeoff risk-return trade-off risk-return tradeoff risks associated with physical activity and exercise risk-sensitive stochastic control problem risks in tourism risk society Risks of Investment Program risk spreading risk subjects in flight test

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