农业环境科学学报2024，Vol.43Issue(6)：1260-1270,封2,12.DOI:10.11654/jaes.2024-0055
西北六省区农田地膜残留特征与关键影响因素
Characteristics and key influencing factors of farmland plastic film residual in six provinces of northwest China
摘要
Abstract
In order to explore the characteristics and influence factors of farmland plastic film residual in six provinces of northwest China,a total of 160 monitoring sites were established in Xinjiang,Inner Mongolia,Qinghai,Ningxia,Shaanxi,and Gansu from 2020 to 2022.Typical sample collection methods were used to carry out mulch film residue monitoring.As well,background information was collected from farmers for the purpose of carrying out a questionnaire survey.The results showed that the amount of plastic film residue ranged from 0.46 kg·hm-2 to 369.29 kg·hm-2 among the 160 monitoring sites,with an average of 70.30 kg·hm-2,which was close to the national standard limit of 75 kg·hm-2.The differences among the different provinces in terms of the amount of residual plastic film were significant(P<0.05).The monitoring points with a high degree of pollution were mainly located in Xinjiang and Inner Mongolia,whereas residual film pollution was found to be relatively light in Shaanxi,Qinghai,Gansu and Ningxia.The amount of residual soil film was observed to be positively correlated with the film mulching years,with thicker film resulting in smaller residue amounts.Significant differences were detected under different crop types and film coverage ratios,being greatly influenced by diverse factors,including recovery methods,farmer types and their distances from plot to village,and soil texture types.The contribution rates of the main factors affecting the residual film amount were as follows:recovery methods(30.8% ),crop types(15.2% ),film coverage ratio(13.8% ),and film mulching years(10.8% ).The contribution rates of farmer types,distances from plot to village,soil texture types,and film thickness to the residual film amount in farmlands were all below 10% .The results show that there is a high risk of plastic film pollution in six provinces of northwest China.It is recommended that prevention and control efforts be strengthened according to local conditions.It is suggested to enhance and promote technologies for preventing and controlling plastic film pollution.More importantly,the local government should refine prevention and control policies for plastic film while fully considering the interests of farmers.关键词
农田地膜残留/影响因素/贡献比例/西北六省区Key words
plastic film residual of farmland/influence factor/contribution ratio/six provinces of northwest China分类
管理科学引用本文复制引用
孙源辰,何文清,靳拓,严昌荣,赵梓君,刘勤..西北六省区农田地膜残留特征与关键影响因素[J].农业环境科学学报,2024,43(6):1260-1270,封2,12.基金项目
国家重点研发计划课题(2023YFD1701902) （2023YFD1701902）
内蒙古自治区科技计划课题(2023YFHH0099) National Key Research and Development Program of China(2023YFD1701902) （2023YFHH0099）
Inner Mongolia Autonomous Region Science and Technology Plan Project(2023YFHH0099) （2023YFHH0099）
