基于AHP-熵权法的全生物降解地膜综合效益评价
Evaluation of the comprehensive benefit of biodegradable mulch based on AHP-entropy weight method
余奋霞 1李虹 2马俊花 2贺婧3
作者信息
- 1. 宁夏大学生态环境学院,银川 750021
- 2. 宁夏回族自治区农业环境保护监测站,银川 750021
- 3. 宁夏大学生态环境学院,银川 750021;西北退化生态系统恢复与重建教育部重点实验室,银川 750021
- 折叠
摘要
为解决全生物降解地膜(BioDegradable Mulch,BDM)能否在宁夏银北灌区代替普通聚乙烯(PolyEthylene,PE)地膜以解决"白色污染"问题和实现土壤资源的可持续利用,以种植西红柿为例,在该地区设置2种BDM(F和X)、普通PE地膜(PE)、未覆膜(CK)共4种处理,开展了 2年田间定位试验,采用主观赋权法即层次分析法,辅以客观赋权法即熵权法,并结合3大效益(经济效益、技术效益和生态效益)共9个指标对BDM的综合效益及敏感性进行分析.结果表明:综合效益指数表现为F最高,X次之,然后是PE,最低为CK.其中,F、X分别比PE高出38.72％、6.48％,比CK高出122.65％、70.91％;敏感性分析表明,与PE相比,BDM的最大敏感因子为西红柿产量与地膜分解率.综上,在宁夏银北灌区生产中推广应用BDM的可行性高,可以使用BDM代替普通PE地膜.
Abstract
In order to solve the problem of"white pollution"and realize the sustainable utilization of soil resources,the BioDegradable Mulch(BDM)could replace PolyEthylene(PE)plastic film in the north of Yinchuan City,Ningxia Province?Two kinds of BDM(F and X),common PE plastic film(PE)and non-mulching(CK)were set up in this area,and the field positioning experiment was carried out for 2 years.The comprehensive benefit and sensitivity of BDM were analyzed by using subjective weighting method(analytic hierarchy process),supplemented by objective weighting method(entropy weight),and combining with 9 indexes of three major benefits(economic benefit,technical benefit and ecological benefit).The results show that the comprehensive benefit index of F is the highest,followed by X,followed by PE,and the lowest is CK.Among them,F and X are 38.72％and 6.48％higher than PE,and 122.65％and 70.91％higher than CK respectively.Sensitivity analysis shows that compared with PE,the biggest sensitive factors of BDM are tomato yield and plastic film decomposition rate.To sum up,it is feasible to popularize and apply BDM in the production of the Yellow River diversion Irrigation District in the north of Yinchuan City,Ningxia Province,and BDM can be used instead of ordinary PE film.
关键词
AHP-熵权法/全生物降解地膜/综合效益/敏感性分析/田间试验Key words
AHP-entropy weight/BDM/comprehensive benefit/sensitivity analysis/field trial引用本文复制引用
出版年
2025
国家科技期刊平台
NSTL
万方数据