“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	development axis development base of mineral resources development blasting development bonus development by ramp development by slope development center development communication theory development control development degree of environmental geological problems development economics development education development ethic development ethics development examination development finance development financing development game development history of agricultural economics and management disciplinary development history of agricultural environmental protection development history of landfill disposal development history of safety management developmenthistory of vehicles development journalism development logging

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。