目(mu)前(qian)市(shi)場(chang)上(shang)地(di)膜(mo)種(zhong)類(lei)很(hen)多(duo)，質(zhi)量(liang)也(ye)良(liang)莠(you)不(bu)齊(qi)
，菜(cai)農(nong)買(mai)地(di)膜(mo)時(shi)大(da)都(dou)心(xin)裏(li)沒(mei)底(di)。近(jin)日(ri)
，記(ji)者(zhe)特(te)意(yi)來(lai)到(dao)壽(shou)光(guang)市(shi)生(sheng)資(zi)市(shi)場(chang)，看(kan)看(kan)選(xuan)購(gou)地(di)膜(mo)上(shang)有(you)啥(sha)道(dao)道(dao)。

    首先
，按規定選擇。國家對地膜厚度有嚴格規定，地膜的厚度是0.014毫米，微膜的厚度是0.008毫米
，超微膜的厚度是0.005毫米，最近國家頒布的標準嚴格禁止使用0.008haomiyixiadedimo，yejiushishuochaoweimoshijinzhishiyongde，zheyangzuoshouxiankaolvdeshibaisewuranwenti，yinweitaibodedimojiagesuiranjiangdile，danshitahuizaochengyanzhongdebaisewuran。pushangyihou，zaitaiyangguangdezhaoshexiajiuhuixingchengyikuaiyikuaidexiaosuipian，zheyangdehua，tajiuburongyihuishou，zaochengtianjiandecanliu，zaigengzhongdeshihou，jiumaidaoledili，hennanquchu，buliyuhouqideshucaishengchan。

    其次

，反複拉試地膜。好的地膜
，橫向和縱向的拉力都較好
，剪下一小條地膜，拉伸時可伸長2-3bei
，rengbuhuiduanlie。erliezhidimozecui
，zailashenguochengzhongrongyichanshengliehenshenzhiladuan。youzhidimonaixinghao，zaihanlengdedongtian，rengranbaochihenhaoderouruanxing，eryibandimozebianying，shaoyizhejiuhuiyoubaihen。baowenxinghaodemodangbeilashenshi，lakaidedifanghuibianbai
，zaibianbaidedifangrufanfula，zeyoutouming，shuominggaobaowen，yibandimozewucixiaoguo，cainongzaigoumaishibufangyishi。

    另ling外wai，用yong手shou捅tong窟ku窿long。如ru果guo窟ku窿long是shi圓yuan的de，而er且qie有you毛mao邊bian，說shuo明ming這zhe個ge膜mo的de縱zong向xiang和he橫heng向xiang的de拉la力li就jiu是shi一yi致zhi的de，如ru果guo捅tong的de窟ku窿long是shi扁bian的de，或huo者zhe一yi捅tong窟ku窿long就jiu沿yan著zhe一yi個ge方fang向xiang撕si開kai了le
，這zhe個ge膜mo的de質zhi量liang就jiu不bu行xing。然ran後hou卷juan起qi地di膜mo再zai從cong頭tou到dao尾wei捏nie一yi遍bian，看kan一yi看kan整zheng個ge成cheng卷juan的de鬆song緊jin程cheng度du，如ru果guo整zheng個ge成cheng卷juan地di膜mo鬆song緊jin程cheng度du一yi致zhi，就jiu說shuo明ming這zhe卷juan膜mo是shi薄bo厚hou比bi較jiao均jun勻yun，覆fu蓋gai的de時shi候hou拉la力li也ye就jiu比bi較jiao一yi致zhi。