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新疆石河子地区棉田土壤中地膜残留研究 预览 被引量:81

The residue of plastic film in cotton fields in Shihezi,Xinjiang
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摘要 以新疆石河子棉区作为研究对象,对连续20a覆膜单作棉花、棉花-西红柿轮作和连续10a单作棉花棉田的地膜残留状况进行了调查,研究结果显示石河子地区棉田地膜残留污染十分严重,土壤中平均残留量高达(300.65±49.32)kg·hm^-2。土壤中残膜量与覆膜年限有关,覆膜年限越久,残留量越高。连续覆膜20a和10a棉田中地膜残留量分别为(307.9±35.84)kg·hm^-2和(259.7±36.78)kg·hm^-2,同时,种植模式对残膜量也存在一定的影响,连续20a覆膜种植棉花-西红柿的土壤中残留量最高,达到(334.4±47.88)kg·hm^-2,且层间分布均匀。3种种植模式下棉田土壤中残留地膜的片数都非常多,在1000~2000万片/hm2之间,主要集中在0~10cm的表层土壤中。研究结果还显示大多数残膜面积较小,集中在1~25cm2之间,小于25cm2的片数超过总片数的80%以上。 The study investigated effects of mulching plastic film residue in mono-cotton planting system with mulched plastic film lasting for 20 years,and cotton-tomato,and mono cotton planting system mulched plastic film lasting for 10 years in Shihezi district.The result shows that there has been a very serious pollution.The average amount of residue of mulching plastic film remained in the cotton field soils is(300.65±49.32)kg·hm-2,and the distribution of residue is relatively uniformity in 0-30 cm layer.The amount of plastic film residue depends on duration of utilization of mulching plastic film,and the longer the duration of utilization,the more plastic film residue is left in the field.For the mono cotton planting system mulched plastic film for 10 years and 20 years,the amount of plastic film residues are(307.9±35.84)kg·hm-2 and(259.7±36.78)kg·hm-2,respectively.At the same time,it is found that the amount of plastic film residue is also affected by the planting method.For the cotton-tomato rotation system mulched plastic film lasting 20 years,the plastic film residue gave a maximum value of about(334.4±47.88)kg·hm-2.The results also indicate the number of plastic film residue pieces are from 10 to 20 million per hectare,most of them are distributed in 0-10cm soil layer and most of the residue pieces are of small size area of about 1-25 cm2 and over 80% of the residue piece are less than 25cm2.
作者 严昌荣 王序俭 何文清 马辉 曹肆林 祝光富 YAN Chang-Rong,WANG Xu-Jian,HE Wen-Qing,MA Hui,CAO Si-Lin,ZHU Guang-Fu( 1 Institute of Environment and Sustainable Development in Agriculture,CAAS,Beijing 100081,China 2 The Key Laboratory for agro-environment & Climate Change,Ministry of Agriculture,Beijing 100081,China 3 Xinjiang Academy of Agricultural and Reclamation Sciences,Shihezi 832000,China 4 Guangdong Shangjiu Biodegradable Plastics Co,.Ltd,Dongguan 523128,China )
出处 《生态学报》 CAS 北大核心 2008年第7期 3470-3474,共5页 Acta Ecologica Sinica
基金 国家“十一五”科技支撑计划资助项目(2006BAD07A06,2006BAD17804) 国家“十一五”863资助项目(2006AA100216)
关键词 石河子地区 棉田 地膜残留 Shihezi district,cotton field,plastic film residue
作者简介 严昌荣(1961~),男,湖北荆门人,研究员,主要从事旱作节水农业与农田生态环境研究.E-mail:yancr@cjac.org.cn 通讯作者Corresponding author.E-mail:hwq201@cjac.org.cn.
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参考文献9

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