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为了明确马铃薯最适耕翻深度，挖掘马铃薯增产潜能，在阴山北麓研究了耕翻深度（D20：20 cm、D30：30 cm、D40：40 cm 和 D50：50 cm）对土壤水分、马铃薯群体质量及产量的影响。结果表明，适度深耕翻可显著提高植株的最大叶面积指数， D30、D40 和 D50 处理较 D20 处理分别增产 30.4～36.8 %、18.5～21.2 %和 27.8～34.8 %。适度深耕翻可明显提高马铃薯块茎形成期后的茎叶干物质积累量。在马铃薯块茎干物质积累过程中，自块茎膨大后期之后，D40 和 D50 处理较 D20处理能够显著促进马铃薯块茎干物质积累，D40 处理最好。生育期间马铃薯田 70 cm 土层内的平均含水率，D40 和 D50 处理下明显降低，且在 D50 处理下达显著水平；在最大蓄水土层（20～50 cm）中，D40 和 D50 处理含水率显著降低，分别减少7.3～8.5 %和 24.9～27.1 %。D40 和 D50处理较 D20处理可显提高马铃薯产量，分别增加 29.3～44.7 %和 19.4～41.11 %。适度深耕可显著提高马铃薯大薯（>150 g）率，D40 和 D50 处理相近，高于浅耕处理，D30 处理高于 D20 处理。本试验条件下，马铃薯最适耕翻深度为 D40 处理。
In order to clarify the optimum depth of potatoes and tap the potential yield potential of potatoes, the effects of tillage depth (D20: 20 cm, D30: 30 cm, D40: 40 cm and D50: 50 cm) Quality and yield impact. The results showed that moderate deep tillage could significantly increase the maximum leaf area index of the plants. D30, D40 and D50 treatments increased the yield by 30.4-36.8%, 18.5-21.2% and 27.8-34.8%, respectively. Appropriate deep plowing can significantly increase the dry matter accumulation of stems and leaves after the formation of potato tubers. During the dry matter accumulation of potato tubers, D40 and D50 treatments significantly promoted the dry matter accumulation of potato tubers compared with D20 treatment, the best D40 treatment. The average water content of 70 cm soil layer in potato field during the growth period was significantly lower under D40 and D50 treatments and reached significant level under D50 treatment. In the maximum water storage layer (20-50 cm), the water content of D40 and D50 treatments Decreased significantly by 7.3 ~ 8.5% and 24.9 ~ 27.1% respectively. Compared with D20 treatment, D40 and D50 treatments increased potato yield by 29.3-44.7% and 19.4-41.11% respectively. Moderate depth plowing could significantly increase the rate of potato (> 150 g), which was similar to D40 and D50, higher than shallow tillage, and higher than D20. Under the conditions of this experiment, the optimum depth of potato was D40.