基于旱地马铃薯绿色覆盖栽培需求，引进7种黑色全生物降解地膜，研究其抑蒸效果、田间降解特性及覆盖栽培对马铃薯产量的影响。结果表明，供试7种黑色全生物降解地膜抑蒸效果显著低于对照PE黑膜，140 d内抑蒸率较对照PE黑膜低41.73%，黑色全生物降解地膜DX1抑蒸效果最佳，达到61.32%。供试的7种黑色全生物降解地膜田间埋设180 d的降解率为4.77%～28.79%，平均为13.18%，黑色全生物降解地膜DX10降解率最高，达到28.79%；田间起垄覆盖174 d后，供试黑色全生物降解地膜膜面均出现了不同程度破裂，其中黑色全生物降解地膜DX2的破裂程度最严重，黑色全生物降解地膜DX4、DX7、DX10膜面完整性较好。供试的7种黑色全生物降解地膜覆盖平均较对照PE黑膜覆盖减产3.18%，WUE较对照PE黑膜覆盖降低了6.69%。综合考虑认为，黑色全生物降解地膜DX1、DX7综合表现优良，可在定西市旱地马铃薯全膜(黑膜)覆盖大垄双行栽培中进行生产试验推广。

Based on the requirement of green mulching cultivation technology of potato in dryland，seven kinds of black biodegradable plastic films were introduced to study their anti-evaporate effect， field degradation characteristics and the effect of Mulching Cultivation on potato yield. The results showed that the effect of anti-evaporate effect of biodegradable film was significantly lower than that of PE black film， within 140 days， the anti evaporation rate was 41.73% lower than that of PE black film， and DX1 had the best effect on inhibiting evaporation， reached 61.32%. After 180 days of field burial， the degradation rate was 4.77%～28.79%， with an average of 13.18%， and DX10 was the highest， reached 28.79%. And after 174 days of ridging and mulching in the field， the film surface appeared different degrees of rupture， DX2 rupture degree was the most serious， the film surface integrity of DX4， DX7， and DX10 was better. The yield of biodegradable film mulching decreased by 3.18% and WUE by 6.69% on average compared with PE black film mulching. It is considered that the black biodegradable plastic film DX1 and DX7 have excellent comprehensive performance， which can be popularized in production experiment of potato whole film (black film) mulching in large ridge and double row cultivation in dryland of Dingxi City.

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国家科技支撑计划子课题(2015BAD22B01-05)；甘肃省农业科学院农业科技创新专项(2017GAAS27)；甘肃省农业生物技术研究与应用开发项目(GNSW-2016-14)；国家重点研发计划项目(2016YFB0302402)资助。