题目内容

【题目】阅读材料,完成问题。

材料 上世纪80年代以来,新疆开始大范围推广使用地膜覆盖技术,截至2014年,新疆农作物覆膜面积已达4700万亩左右,占农作物总播面积的70%以上,年使用地膜总量达18.5万吨。与此同时,由于新疆使用的地膜厚度薄、易破损,人工捡拾劳动强度大、再加工利用较难,导致人们对农田废旧地膜回收和再利用的积极性不高,全区农田废旧地膜回收利用率还不到10%。废旧地膜在农田土壤中逐年增多,污染持续加剧,目前新疆已成为我国乃至世界上“白色污染”最严重的区域之一。

分析新疆成为我国“白色污染”最严重区域的原因。

【答案】地膜不易分解;使用时间长,地膜残留积累量大;使用面积广;使用量大;厚度薄,回收和再加工困难;当地农民回收和再利用意识不强,积极性低;

【解析】

试题分析:仔细阅读材料,结合材料中关键信息分析原因;由材料可知“上世纪80年代以来,新疆农作物覆膜面积已达4700万亩左右,占农作物总播面积的70%以上,年使用地膜总量达18.5万吨”,说明新疆地膜使用量大且面积广;由“地膜厚度薄、易破损,人工捡拾劳动强度大”可知回收加工困难,由于使用时间较长,在地里残留量大,难以收集;“人们对农田废旧地膜回收和再利用的积极性不高”可知当地农民环保意识薄弱。

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