试题与答案

溶于碱但不溶于酸的腐殖质是（）A胡敏酸B富啡酸C胡敏素D丁酸

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题型：单项选择题

题目：

溶于碱但不溶于酸的腐殖质是（）

A胡敏酸

B富啡酸

C胡敏素

D丁酸

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A

考点：土壤肥料学复合肥料复合肥料题库
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