题目内容
The soil water characteristic curves of water desorption & absorption are coincident.
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The aeration of dryland soil is more efficient than that of the paddy soil, so the Eh of dryland soil is higher than the paddy soil.
The density of soil surface soil is usually lower than the bottom soil.
Soil radiation is the only source of soil heat.
Which of the following is not the names of soil structures?
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