对华北平原高产农田生态系统2004年的土壤呼吸状况进行了分析，探讨了不同耕作方式下土壤呼吸量的季节变化规律。
This study investigated variations in soil respiration under different cultivation practices on high yield farmland in the North China Plain during 2004.
对华北平原高产农田生态系统2004年的土壤呼吸状况进行了分析，探讨了不同耕作方式下土壤呼吸量的季节变化规律。
This study investigated variations in soil respiration under different cultivation practices on high yield farmland in the North China Plain during 2004.
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