数字农科院2.0

The status and distribution characteristics of residual mulching film in Xinjiang, China

文献类型： 外文期刊

作者： Zhang Dan;Liu Hong-bin;Wang Hong-yuan;Hu Wan-li;Qin Xiao-hui;Ma Xing-wang;Yan Chang-rong

作者机构：

关键词： Xinjiang;residual mulching film;influential factor;agricultural resources;agricultural pollution

期刊名称： JOURNAL OF INTEGRATIVE AGRICULTURE

ISSN： 2095-3119

年卷期： 2016 年 15 卷 11 期

页码：

收录情况： SCI

摘要： Pollution of residual plastic film in arable lands is a severe problem in China. In this study, the status of residual film and influential factors were investigated using the methods of farm survey in combination with questionnaires and quadrat sampling at a large number of field sites in Xinjiang Uygur Autonomous Region, China. The results showed that the amount of film utilization increased largely and reached to 1.8x10(5) t in 2013. Similarly, the mulching area also substantially increased in recent decades, and reached to 2.7x10(5) ha in the same year. According to the current survey, 60.7% of the sites presented a greater mulch residue than the national film residue standard (75 kg ha(-1)), and the maximum residual amount reached 502.2 kg ha(-1) in Turpan, Xinjiang. The film thickness, the mulching time and the crop type all influenced mulch residue. The thickness of the film had significantly negative correlation with the amount of residual film (P<0.05), while the mulching years had significantly positive correlation with it (P<0.05). The total amount of residual film in Xinjiang was 3.43x10(5) t in 2011, which accounted for 15.3% of the cumulative dosage of mulching. Among all the crops, the cotton fields had the largest residual amount of mulch film (158.4 kg ha(-1)), and also the largest contribution (2.6x10(5) tons) to the total amount of residual film in Xinjiang.

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