“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	extended Kalman filte extended Kalman filter extended [light] source extended light source extended line extended linear continuum extended low-surface brightness source Extended Luxuriant Gems of the Annals of Spring and Autumn Period extended Markuschevich basis extended mean-value theorem extended module Extended net extended number axis extended object extended periodic table of chemical elements extended Petri net extended-phase space extended photosphere extended plane extended point transformation extended polynomial extended predicate calculus extended producer responsibility extended proportional navigation extended quintessence

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