“secondary nutrients and micronutrients fertilizers”的概念、定义、翻译、参考文献-科学参考

单词	secondary nutrients and micronutrients fertilizers
释义	secondary nutrients and micronutrients fertilizers Encyclopedia 农学中微量元素肥料释 secondary nutrients and micronutrients fertilizers中微量元素肥料中量元素肥料和微量元素肥料的统称。与大量元素氮、磷、钾的含量相比较而言，在作物干物质组分中，钙、镁、硫的含量一般在百分之一到万分之一，称为中量元素。对于作物来说，含量介于0.2～200毫克/千克（按干物重计）的必需营养元素称为“微量元素”。
随便看	general systems theory General System Theory general system theory general tax general teacher of primary school general term general theorem general theorems of dynamics general theory General Theory of Artistic Features of Grottoes in China General theory of Grassland Agro-ecosystems general theory of perturbation General Theory of Population general theory of relativity general theory of shell General Theory of Turf Science general thermoprint general topology general toxicology general transcription factor general transcription factors general transformation general transformation group General Treatise on Causes and Manifestations of All Diseases General Treatises

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