“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	Hamiltonian field Hamiltonian form Hamiltonian formalism Hamiltonian function Hamiltonian function density Hamiltonian game Hamiltonian graph Hamiltonian graph conjecture Hamiltonian group Hamiltonian in position representation Hamiltonian integer Hamiltonian line Hamiltonian loop Hamiltonian mapping Hamiltonian Mechanics Hamiltonian of a moving charge in field Hamiltonian operator Hamiltonian path Hamiltonian problem Hamiltonian quaternion Hamiltonian quaternion algebra Hamiltonian structure Hamiltonian system Hamiltonian trail Hamiltonian vector field

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