中国农业科学 ›› 2022, Vol. 55 ›› Issue (20): 3983-3996.doi: 10.3864/j.issn.0578-1752.2022.20.010

• 土壤肥料·节水灌溉·农业生态环境 • 上一篇    下一篇

地膜对农业生产的影响及其污染控制

张金瑞1,2(),任思洋1,3,戴吉照4,丁凡4,肖谋良5,刘学军1,2(),严昌荣6,葛体达5,汪景宽4,刘勤6,王锴1,2,张福锁1   

  1. 1中国农业大学国家农业绿色发展研究院植物-土壤相互作用教育部重点实验室,中国北京100193
    2中国农业大学资源与环境学院农田土壤污染防控与修复北京市重点实验室,中国北京100193
    3班戈大学自然科学学院,英国班戈LL57 2DG
    4沈阳农业大学土地与环境学院,中国沈阳110086
    5宁波大学植物病毒学研究所农产品质量安全危害因子与风险防控国家重点实验室,中国浙江宁波315211
    6中国农业科学院农业环境与可持续发展研究所/农业农村部农膜污染防控重点实验室,中国北京100081
  • 收稿日期:2021-09-02 接受日期:2021-11-10 出版日期:2022-10-16 发布日期:2022-10-24
  • 通讯作者: 刘学军
  • 作者简介:张金瑞,E-mail: 13244306496@163.com
  • 基金资助:
    中英等六国GCRF项目“农业微塑料对粮食安全与可持续发展影响”(NE/V005871/1)

Influence of Plastic Film on Agricultural Production and Its Pollution Control

ZHANG JinRui1,2(),REN SiYang1,3,DAI JiZhao4,DING Fan4,XIAO MouLiang5,LIU XueJun1,2(),YAN ChangRong6,GE TiDa5,WANG JingKuan4,LIU Qin6,WANG Kai1,2,ZHANG FuSuo1   

  1. 1Key Laboratory of Plant-Soil Interactions, Ministry of Education, National Academy of Agriculture Green Development, China Agricultural University, Beijing 100193, China
    2Beijing Key Laboratory of Farmland Soil Pollution Prevention-Control and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
    3School of Natural Sciences, Bangor University, Bangor LL57 2DG, UK
    4College of Land and Environment, Shenyang Agricultural University, Shenyang 110086, China
    5State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Virology, Ningbo University, Ningbo 315211, Zhejiang, China
    6Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
  • Received:2021-09-02 Accepted:2021-11-10 Online:2022-10-16 Published:2022-10-24
  • Contact: XueJun LIU

摘要:

地膜覆盖具有显著的农业生产效益,可以增温保墒,防虫抑草,扩大作物种植适宜区,从而提高农作物产量和品质,因此在世界范围内尤其是在干旱半干旱地区农田中得到广泛应用。然而,塑料地膜降解速率极其缓慢,加上中国地膜回收工作的开展较为落后,导致大量的塑料碎片残留在农田中,从而造成土壤环境的残膜及微塑料污染。本文基于文献资料、调研和统计数据,就地膜对中国农业生产的影响及其污染防控进行了分析。残膜及微塑料污染会改变土壤理化性质,限制土壤水分和养分运移,并对土壤动植物的生长、发育和繁殖产生危害,改变土壤微生物的丰度和群落结构,损害土壤健康,长此以往会造成作物产量和品质下降,甚至威胁到粮食安全。微塑料存在被植物吸收的可能性,从而通过食物链进入人体,对人体健康产生威胁。此外,微塑料巨大的比表面积使其极容易通过吸附作用成为其他污染物(重金属、农药和抗生素等)的载体,增加污染物的转移富集风险,从而造成土壤生态环境复合污染。中国地膜生产、使用相关标准正在逐步完善,但同发达国家和地区相比仍有一定的差距。中国尚未形成完善可持续的地膜回收体系,农田土壤中的微塑料污染研究仍不够充分,同时针对残膜及微塑料污染防控的政策和法规也有待于进一步完善。因此应进一步借鉴发达国家和地区的经验,结合中国实际情况,因地制宜制定地膜生产、回收相关标准以及残膜和微塑料污染防治的政策法规。

关键词: 地膜, 农业效益, 残膜及微塑料污染, 环境效应, 污染防治

Abstract:

Plastic film has been widely used in the farmland all over the world especially in arid and semi-arid areas because of its remarkable agricultural benefits, such as increasing soil temperature and moisture, reducing weed and pest damage, extending crop-growing areas, and consequently improving crop yield and quality. However, the degradation rate of plastic film is extremely slow, and the recovery of plastic film is also relatively backward in China, which lead to a large number of plastic debris in the farmland, causing plastic residues and microplastics pollution in the soil environment. Based on literature, investigation and statistical data, this research reviewed and prospects the impact of plastic film on agricultural production and pollution control in China. Plastic residues and microplastics have been reported to change the physical and chemical properties of soil, restrict soil water and nutrient transport, do harm to the growth, development and reproduction of soil animals and plants, change the abundance and community structure of soil microorganisms, and damage the soil health. In the long-term, plastic residues and microplastics pollution will cause a decline in crop yield and quality. Microplastics had the potential to be absorbed by plants, enter the human body through the food chain and pose a threat to human health. In addition, the large specific surface area of microplastics enabled them to become carriers of other pollutants (e.g. heavy metals, pesticides and antibiotics), causing combined pollution to the soil ecological environment. The standard of plastic film production and use in China was gradually being improved, however, there was still a certain gap compared with developed countries and regions. In addition, a sustainable recycling system of plastic film and the policy of preventing plastic residue and microplastics pollution have not been well formed in China, and the study of microplastics pollution in Chinese farmland soil was still very limited. Therefore, it is critical to solve the problem of plastic residues and microplastics pollution in the soil by evaluating the present situation of plastic residues and microplastics pollution in soils, quantifying the effects of microplastics on the soil environment, and evaluating risks of microplastics to the soil ecosystems, as well as exploring the measures of controlling soil plastic residues and microplastics pollution, and formulating relevant policies and regulations of preventing these pollution.

Key words: plastic film mulching, agricultural benefit, plastic residues and microplastics pollution, environmental effect, pollution control