| Plastic film mulching cultivation technology is known as "the second revolution ofagricultural production," and since the early80century Xinjiang Corps has promoted the useof the technology. Agricultural film has been widely used in the agricultural production anddevelopment because of its special physical and chemical properties, which increases farmers’income and brings remarkable economic benefit. However, due to the refractory material ofagricultural plastic film itself and long-term use without scientific management and recovery,a large number of residual plastic film has existed, causing pollution of residual plastic film.Residual plastic film not only reduces the quality of soil by undermining the performance andstructure of soil, but also makes negative effect on the growth and development of crops,farming operation, soil microorganisms and ecological environment, and finally effects thecrops yield. Therefore, only solve the problem of residual plastic film can ensure theharmonious and sustainable development of agricultural economy and ecological environmentin Crops.In this paper, through the analysis and research of pollution status of residual plasticfilm and application status of recycling equipment, the recycling policy mechanism ofresidual plastic film in Corps was explored, which provides reference for the future to solvethe problem of pollution of residual plastic film and make a great significance in promotingthe sustainable development of agriculture.1, According to "technical specifications" soil environmental monitoring residual filmsample collection and statistical analysis of data, the current situation of plastic film pollutionCorps area, and the reasons of large amounts of residual plastic film analysis.2, Through the on-the-spot investigation to the Corps, scientific research units,agricultural machinery processing enterprise, based on investigation of seedling, after andbefore sowing, three kinds of residual film recovery machine, analyzed the structure,performance and application situation of residual film recovery machine more typical.3, Effective questionnaire method, obtaining recovery and mechanism of corps residualfilm policy and the existing problems, through comparative analysis, summarized the policy,mechanism of plastic film pollution governance and measures.The results show that:1, After investigation and analysis, concluded that:1) the Corps area film mulchingplastic film residue more, average plastic film residue was308.1kg·ha-1, causing seriouspollution of farmland soil;2) of farmland soil covered longer, more the amount of residualplastic film in farmland soil, farmland mulching years limit of less than5years, the averageplastic film residue from510and10years above the soil volume were200.8kg·ha-1,283.0 kg·ha-1and440.6kg·ha-1;3) residual film most residual film on020cm in shallow soil,accounting for more than the total residual quantity of80%;4) small membrane （<4cm2） andmembrane （425cm2） proportion very high, significantly more than the big film （>25cm2）,and the total number of plastic film residue and crop mulching planting period is proportional.2, Mechanical recycling is the residual film recovery of the most effective methods,through the analysis:1) spring tooth type, toothed residual film recovery machine, because ofits simple structure, high work efficiency, convenient operation and low price, has beenapplied widely lasting in the Corps, a residual film cleaning machines keep models volume ofthe largest;2) the straw crushing and residual film recovery machine can effectively improvethe work efficiency, and clear film rate to obtain the safeguard, but because of the complexstructure, high cost, low efficiency of unfavorable factors lead to this kind of models topromote the use of a large area.3, Finally, support, incentives and subsidies policy recommendations, throughtechnological innovation, recycling, supervision and residual film recovery evaluationmechanism, to provide the reference for the plastic film pollution control. |
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