内蒙古地膜残留污染现状及残膜回收利用对策研究
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Study on the current situation of plastic film residue pollution and the countermeasures for the recovery and utilization of residual film in Inner Mongolia
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    内蒙古地区自20世纪70年代末开始,地膜覆盖技术得到了大面积的推广,但同时地膜残留污染约束了农业的可持续发展。据统计2011年以后全区地膜覆盖总面积达到133万hm2以上,农用地膜年使用量超过了4.9万t,并且保持逐年增加的趋势。本次调研结果显示,目前全区使用的地膜厚度一般在0.006~0.008 mm之间,回收率仅为60%左右,全区地膜平均残留量为84 kg/hm2,回收率较2010年第一次全国污染源普查公报数据低20%左右,而地膜残留量较公报数据高40.5%。地膜残留主要分布在0~20 cm耕层土壤中,并且近年刚开始实行地膜覆盖的地块年平均地膜残留量增长速度显著高于覆膜年限较长的地块。针对内蒙古地区地膜污染现状,从地膜的标准化生产、节约使用、高效回收以及未来需要研发的新材料、新技术、新政策等机制体制方面提出相应的防治技术途径,达到地膜覆盖技术大面积推广和农作物增产的同时实现农业的可持续发展。

    Abstract:

    The technology of film mulching was popularized in the late 1970s in Inner Mongolia autonomous region.But the plastic film residue pollution has become one of the main restraint factors for agriculture sustainable development.According to the statistics,the area of plastic film mulching reached more than 1.33 million hm2 and the amount of agricultural mulch used was more than 49 000 t and kept increasing trend year by year after 2011.This study showed that the film thickness in use for the whole region was generally between 0.006 mm to 0.008 mm.However,the recovery rate was only about 60% and the average amount of residue of the film in the whole region was 84 kg/hm2.The recovery ratio was 20% lower than the data which was publised in the first national pollution census bulletin in 2010 and the membrane resides was 40.5% higher than the data in bulletin.Membrane resides were mainly distributed in the 0~20 cm top layer of soil.The average growth rate of membrane resides in the plots which was new with mulching film in recent years was significantly higher than the plots that covering film in a longer period.According to current situation of plastic film pollution in the region,the corresponding prevention and control technology,and the specific mechanism including the standardization of plastic film production,economical use,efficient recycling and the new materials,new technology,new policies should be put forward in the future to implement the widespread promotion of membrane technology,increase the crop yields and realizing agricultural sustainable development.

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白云龙,李晓龙,张胜,包丽华,刘莉平,林利龙,郑海春*.内蒙古地膜残留污染现状及残膜回收利用对策研究[J].中国土壤与肥料,2015,(6):139-145.

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  • 收稿日期:2015-01-31
  • 最后修改日期:2015-08-10
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  • 在线发布日期: 2015-12-17
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