摘要
采用地膜覆盖栽培技术可使农作物产量和效益成倍增长,但是留于土壤中的地膜残片易造成"白色污染"。对农用地膜带来的环境污染进行了详细论述,同时分析总结了农田残膜回收利用的方法以及清理中存在的问题,并在此基础上提出了加快农田残膜治理,保护农田生态环境是地膜覆盖栽培技术持续发展的关键:在可降解地膜没有普及的情况下当前采用机械化残膜回收技术、污染控制技术、适期揭膜技术和以旧膜换新膜技术等是治理残膜污染的有效方法;依靠市场调节作用和政府扶持,利用工程技术措施解决好回收和集聚打包等关键环节,提高再生利用的科技含量。
The adoption of plastic film mulching cultivation technology could increase the crop yield and the benefit two times over but the plastic debris left in soil will cause ＂white pollution＂. A detailed discussion is made on the environmental pol- lution brought about by agricultural film. Meanwhile the method for the recovery and reuse of the farmland residual film as well as the problems existing in its cleaning are analyzed and summarized. On the basis it is put forward that the speeding up of the farmland residual film management and the protection of farmland ecological environment are the key for sustain- able development of the plastic film mulching cultivation technology. Under the condition that the degradable mulching film is not applied universally, the technology of mechanized recovery of the residual film, the pollution control technology, the technology of stripping the film at appropriate time and the technology of substituting the old film with new film are the ef- fective approaches for plastic film pollution control. It should rely on market regulation and government support and the use of engineering measures to solve the problems at the key links such as the recovery and the agglomeration package to im- prove the scientific and technological level of the recycling and reuse.
出处
《宁夏农林科技》
2013年第6期16-17,21,共3页
Journal of Ningxia Agriculture and Forestry Science and Technology
关键词
地膜覆盖栽培
残膜
污染
回收利用
解决对策
Plastic film mulching cultivation
Residual film
Pollution
Recycling and reuse
Countermeasures
