以下为句子列表：
英文: Since deep plowing of well-drained soils quickly decomposes organic matters in top soils, additional organic matters are needed.
中文: 因深翻排水良好的土壤使表层土壤中有机质迅速分解，所以必须施用有机质。
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英文: The results show that the interface between the cultivated layer and the plough sole in the soil profile was undulated under the current cropping system mainly using small-sized four-wheeled tractors and flat under the cropping system of deep plowing annu
中文: 结果发现，现行的以小四轮拖拉机为主要动力的耕作制度下，土壤剖面中耕层与犁底层的界面为“波浪型”，而年年进行秋翻的玉米田，其耕层与梨底层的界面为“平面型”。
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