农业工程学报2025，Vol.41Issue(23)：67-76,10.DOI:10.11975/j.issn.1002-6819.202505007
生物可降解膜覆盖对花生生长、水分利用与温室气体排放的影响
Impacts of biodegradable film mulching on the growth and water use efficiency,and greenhouse gas emissions of peanut(Arachis hypogaea L.)
摘要
Abstract
Biodegradable film mulching is one of the most critical technologies to overcome the dual challenges of agricultural plastic pollution and greenhouse gas(GHG)emissions.However,it is often required to optimize the key film properties—color and thickness—on the agronomic productivity and net environmental footprint.This study aimed to identify the optimal mulching strategies for high crop yield with a better environment during peanut cultivation.A field experiment was conducted with nine treatments:a no-mulch control(CK),conventional 0.010 mm polyethylene films(black and white),and biodegradable films of two colors(black,BDM;white,WDM)and three thicknesses(0.008,0.010,and 0.015 mm).A systematic measurement was carried out to determine the peanut yield,water use efficiency(WUE),as well as the fluxes of N2O,CH4,and CO2 using the static chamber-gas chromatography.Global warming potential(GWP)and greenhouse gas intensity(GHGI)were also calculated to assess the overall climate impacts.Results demonstrated that all mulching treatments significantly improved the peanut yield and WUE,compared with the CK.All mulches were also significantly reduced the cumulative N2O emissions,GWP,and GHGI(P<0.05).Concurrently.There was a weak CH4 sink capacity in the soil.Furthermore,the agronomic and environmental performance of the biodegradable films was comparable to that of conventional films in the short term,indicating their viability as a sustainable alternative.Crucially,the color and thickness were identified as the key drivers of performance.In color,the white films produced an average yield 10.6%higher than black films of the same thickness(P<0.05).Thinner films also exhibited superior potential for GHG mitigation.The 0.008 mm white biodegradable film(WDM8)reduced the GWP by 41.8%and 24.4%,compared with its 0.010 and 0.015 mm counterparts,respectively(P<0.05).Similarly,the 0.008 mm black biodegradable film(BDM8)lowered GHGI by 7.4%and 19.1%,respectively,compared with the thicker black ones(P<0.05).Two context-dependent optimal strategies were proposed.First,the 0.008 mm white biodegradable film(WDM8)was recommended for the synergistic high yields and low carbon emissions,as it recorded the highest yield and one of the lowest GHGI values.Second,the 0.008 mm black biodegradable film(BDM8)exhibited no significant differences in yield and WUE from WDM8,thereby serving as another excellent mulching option for sustainable agricultural production.This finding can provide a scientific basis to optimize the targeted biodegradable film in climate-smart and sustainable agriculture.关键词
降解地膜/厚度/花生/土壤水分/土壤温度/温室气体排放Key words
biodegradable film/thickness/peanut/soil moisture/soil temperature/greenhouse gas emission分类
资源环境引用本文复制引用
张友良,王子健,唐永齐,赵健宇,冯绍元,王凤新..生物可降解膜覆盖对花生生长、水分利用与温室气体排放的影响[J].农业工程学报,2025,41(23):67-76,10.基金项目
国家自然科学基金青年基金项目(51809225) （51809225）
江苏省自然科学基金青年基金项目(BK20180929) （BK20180929）
中国博士后科学基金特别资助项目(2020T130559) （2020T130559）
中国博士后科学基金面上资助项目(2019M651977) （2019M651977）
