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底土層含水量較耕作層和心土層高, 且較穩(wěn)定,含水量較為豐足.The soil moisture content of bottom layer was higher than and central layer, stabile and abundance....

“心土”的拼音為：xīn tǔ...

“心土”的英語可以翻譯為：[農(nóng)] subsoil ...