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soil survey
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soil survey
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soil survey
土壤调查
以确定土壤类型及其边界为主要目的和内容的专业活动。以土壤地理学理论为指导,通过对土壤剖面形态及其周围环境的观察、描述、记载和采样化验,对土壤的发生、发育、演变、分类、分布、肥力和质量进行分析、判断,并勾绘出所有土壤类型的边界。土壤调查的基础是土壤分类。对于土壤调查活动来说,土壤分类系统是必须具备的。广义的土壤调查还包括对各种土壤性状及其变化进行确定的专业活动。具有突出的野外实地研究土壤的特征,是土壤研究的一种基本方法。
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Master Embracing Simplicity
Master Embracing Simplicity: Inner Chapters, block-printed edition by Rong Liulang's Bookstore in Lin'an (1152), twenty-second year of the Shaoxing era, Song Dynasty
master equation
master flowmeter method
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master grating
Master Guliang’s Commentary on Spring and Autumn Annals
Master Guliang’s Commentary on Spring and Autumn Annals,handwritten copy,third year of Longshuo era,Tang Dynasty
Master Heguan
master industrial economic map
master key
Master Lei's Discourse on Drug Processing
mastermind
master morality and sliver morality
Master objective programming
master of agriculture
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Master of Business Administration
master of business administration
master of Chinese materia medica
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