寒旱农业科学2026，Vol.5Issue(5)：446-450,5.DOI:10.3969/j.issn.2097-2172.2026.05.008
全生物降解地膜在陇东旱塬区玉米种植中的应用效果评价
Evaluation of the Application Effect of Fully Biodegradable Mulching Film in Dryland Maize Cultivation in the Longdong Dry Plateau Region
摘要
Abstract
The adaptability of fully biodegradable mulch film in the Longdong dry plateau region and its effects on maize growth,soil property,and yield were investigated to provide scientific data support for the application of fully biodegradable mulch film in the Longdong dry plateau and similar ecological region.A randomized block design was adopted with 2 mulching cultivation patterns,namely conventional polyethylene mulching film covering and fully biodegradable mulching film covering,while open-field cultivation without mulching was used as the control,to comparatively analyze the covering effects of fully biodegradable mulching film and conventional polyethylene mulching film.Results showed that no significant difference in growth period was observed be-tween the 2 mulching treatments,both mulching film coverings significantly promoted early emergence and early maturity of maize,shortening the growth period by 14 to 15 days compared with open-field cultivation.Compared with open-field cultivation,convention-al polyethylene mulching film covering and fully biodegradable mulching film covering significantly increased soil temperature by 0.8 and 0.6℃,respectively.Soil moisture content after mulching significantly increased by 111.8%and 108.1%,respectively,and at har-vest increased by 8.2%and 6.2%,respectively.Under conventional polyethylene mulching film covering,soil bulk density at harvest increased by 0.023 g/cm3 compared with that before mulching,whereas under fully biodegradable mulching film covering,soil bulk density decreased by 0.032 g/cm3,significantly improving soil looseness.Compared with open-field cultivation,fully biodegradable mulching film significantly increased maize yield by 17.8%,with no significant difference from conventional polyethylene mulching film treatment.Meanwhile,fully biodegradable mulching film demonstrated excellent field degradation performance after maize har-vest,with the area of exposed cracks reaching 32%at harvest and as high as 85%40 days after harvest.Therefore,while maintaining favorable yield enhancement and hydrothermal regulation effects,fully biodegradable mulching film can effectively alleviate soil com-paction and residual film pollution,and is suitable for application in the Longdong dry plateau region and similar ecological region.关键词
全生物降解地膜/玉米/陇东旱塬区/土壤温度/土壤容重/降解性能Key words
Fully biodegradable mulching film/Maize/Longdongdry plateau region/Soil temperature/Soil bulk density/Deg-radation performance分类
农业科技引用本文复制引用
孙叶,张晓莹,蒋会萍,魏江文,郑秋月,秦学刚,姚小凤..全生物降解地膜在陇东旱塬区玉米种植中的应用效果评价[J].寒旱农业科学,2026,5(5):446-450,5.基金项目
甘肃省科技厅技术创新专项(24CKJL001) （24CKJL001）
甘肃省科技厅重点研发计划(25YFNL001) （25YFNL001）
国家重点研发计划子课题(2024YFD230020204) （2024YFD230020204）
平凉市科技计划(PL-STK-2024A-027). （PL-STK-2024A-027）
