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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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computer aided design of jacquard fabric
computer aided design of plain fabric
computer aided design of printed fabric
computer aided diagnosis
computer aided drug design
computer-aided drug design
computer-aided electronic design
computer aided engineering
computer-aided engineering
computer-aided engineering, CAE
computer-aided engineering design
computer aided engineering of internal combustion engine
Computer Aided Facilities Planning
computer aided garment cutting system
computer aided garment instruction
computer aided geometric design
computer-aided geometric design
computer-aided geometric design, CAGD
computer aided human experiment
computer-aided human experiment
computer-aided industrial design
computer aided information analysis
computer-aided instruction
computer-aided instruction, CAI
computer aided logistic support for aircraft materiel
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