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secondary nutrients and micronutrients fertilizers
释义
secondary nutrients and micronutrients fertilizers
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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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shaoze
Shapai Hydropower Station
Shape
shape
SHAPE American
shape analysis
shape anisotropy
shape averaging
shape blending
shape blending of surfaces
shape category
shape code
shape coexistence
shape context
shape control
shape-controlled synthesis of nanocrystal
shape correction factor
shaped activated carbon
shaped Cassegrain antenna
shaped charge blasting
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