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单词
soil alkalinity
释义
soil alkalinity
Encyclopedia
农学
土壤碱度
释
soil alkalinity
土壤碱度
当pH大于7.0时土壤中碱性物质的总量。这些物质主要是钙、镁、钠的碳酸盐和重碳酸盐以及交换性盐基特别是交换性钠,但又因土而异。广义的土壤碱度是土壤达到某一参比pH时的土壤酸中和容量。
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vertex of a polygon
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