Therefore, "wave type" section cultivated horizon may occur drier phenomenon much easier than "flat type" section. This may be the main reason why drier phenomena easily happen in the black soil.
“波浪型”剖面耕层土壤比“平面型”剖面更容易发生干旱现象，这可能是黑土区土壤易出现干旱现象的主要原因。
Therefore, "wave type" section cultivated horizon may occur drier phenomenon much easier than "flat type" section. This may be the main reason why drier phenomena easily happen in the black soil.
“波浪型”剖面耕层土壤比“平面型”剖面更容易发生干旱现象，这可能是黑土区土壤易出现干旱现象的主要原因。
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