3种农用腐植酸的组分及基本理化特性
Hunan Agricultural Sciences(2010)
Abstract
分析测定了A、B、C 3种不同农用腐植酸的主要组分及基本理化性质,结果表明:A、B 2种腐植酸总含量为91.84%~96.62%,而C腐植酸总含量仅74.79%;3种腐植酸的组分中均以黑腐酸为主,占77.3%~93.7%,黄腐酸含量均小于1%;A、B 2种腐植酸为酸性,容重、阳离子交换量和交换性钾含量等性质都比较接近,C腐植酸呈碱性,阳离子交换量和交换性钾含量明显大于A、B 2种,适于烟草等喜钾作物;3种腐植酸的含碳系数非常接近。
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Key words
content,physical and chemical properties,humic acid,compositions
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