排灌机械工程学报2025，Vol.43Issue(6)：620-627,8.DOI:10.3969/j.issn.1674-8530.24.0162
秸秆可降解地膜覆盖下节水灌溉稻田杂草发生规律与控草效应
Weed occurrence patterns and control effects in water-saving irrigated paddy fields under biodegradable straw film mulching
摘要
Abstract
Effects of biodegradable straw film mulching on weed control in paddy fields under water-saving irrigation were investigated,the experiment included two factors,namely mulch coverage and herbicide application.The mulch treatment was divided into four levels:F0(no mulch),F1(single layer of mulch),F2(double layers of mulch)and F3(triple layers of mulch).The herbicide applica-tion was setatthree levels:H0(no herbicide),H0.5(50%ofthe full herbicide dose),and H1(full herbicide dose),resulting in 12 treatment combinations.Each plot in the experiment was replicated three times to monitor indicators such as weed number,species,biomass,and total fresh weight.The results show that mulch treatment effectively delays weed emergence,reduces the frequency of peak weed outbreaks,and significantly decreases weed fresh weight.Additionally,the mulch reduces weed species diversity,alters their habitats and community distribution,and effectively controls dominant weed species densities.Considering cost and other factors,the F1 H0 treatment(single-layer mulch without herbicide application)is recommended as a typical weed control measure in paddy fields.Com-pared to the no mulch option,this treatment achieves weed suppression efficiencies of 75%and 78%respectively during the two peak weed emergence periods,with a cumulative fresh weight reduction of 77%.Before the mulch degrades,it provides 100%weed control effectiveness and significantly reduces the density of dominant weed species.关键词
可降解地膜覆盖/除草剂/杂草/节水灌溉/生物量Key words
biodegradable film mulching/herbicides/weeds/water-saving irrigation/biomass分类
农业科技引用本文复制引用
肖向阳,刘笑吟,程衡,朱莉莉,姚兆洋,蔡钰欣..秸秆可降解地膜覆盖下节水灌溉稻田杂草发生规律与控草效应[J].排灌机械工程学报,2025,43(6):620-627,8.基金项目
国家自然科学基金资助项目(52379037) （52379037）
淮安市重点研发计划项目(HAN202110) （HAN202110）
