为了解秸秆覆盖量对旱地马铃薯产量形成的调控效应，在白银市平川区研究了秸秆不同覆盖量对垄作栽培马铃薯种植的土壤水温及产量的影响。结果表明，用玉米秸秆覆盖能明显改善垄作马铃薯的土壤温度和土壤含水量，保墒、增温效果明显。秸秆用量为10 500 kg/hm2时，土壤含水量为12.58%，马铃薯株高为73.1 cm、单株薯重为0.79 g、单薯重为0.162 g，马铃薯商品率高达69.14%，折合产量最高，达24 000.00 kg/hm2，建议推广应用。

In order to understand the regulation effect of straw mulching on potato yield formation in the dryland， the effects of different quantity of straw mulching on soil water temperature and potato yield in ridge culture were studied in Pingchuan District. The results showed that mulching with corn straw for ridge planting of potato could obviously improve soil temperature and soil water content， and had obvious effect on soil moisture retention and temperature increase. When the amout of straw was 10 500 kg/hm2， soil water content was 12.58%， the plant height of potato was 73.1 cm， potato weight per plant was 0.79 g， single potato weight was 0.162 g， the commercial rate was up to 69.14%， the highest yield reached 24 000.00 kg/hm2， so it is suggested to be promoted and applied.

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