题目

MERGE_2025_0322 Tutorial 4 2025 quiz

多项选择题

What are the functions of soil organic matter?

选项

A.cation exchange

B.nutrient storage

C.aggregation

D.moisture holding

E.food source for microbes

F.dispersion

G.No answer text provided.

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标准答案

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思路分析

Question: What are the functions of soil organic matter? Because the answer options are not provided in the data, I will first discuss the typical functions of soil organic matter (SOM) and then relate them to the common types of answer choices you might see. - cation exchange: One well-established function of SOM is increasing cation exchange capacity (CEC) in soil. The negatively charged functional groups (like carboxyl and phenolic groups) on organic matter attract and hold positively charged nutrient ions (such as Ca2+, Mg2+, K+, and NH4+), enabling nutrients to be retained in the......Login to view full explanation