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中微量元素肥料
释义
中微量元素肥料
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”。
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reaction bonding
reaction bonding; reaction adhesion
reaction calorimeter
reaction calorimetry
reaction centre
reaction chain
reaction channel
reaction chromatography
reaction classes
reaction coefficient
reaction coil
reaction control system
reaction coordinate
reaction coordinates
reaction, counteraction
reaction cross section
reaction cross-section
reaction degree
reaction diffusion equation
reaction-diffusion equation
reaction diffusion system
reaction during qigong practice
reaction energy
reaction enthalpy
reaction factor of fluid machinery
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