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ID:44204989
大小:5.89 MB
页数:36页
时间:2019-10-19
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1、Chemicalororganicfarming?Whatisthethingweputonthesoilwhichmakescropsgrow?Itisfertilizer.Howmanykindsoffertilizersdofarmersuse?Andwhatarethey?Therearetwokinds.Theyarechemicalfertilizersandnaturalwastefromanimals.Whichkinddofarmersusewhentheyaredoingorganicfarming?Thesecondone---naturalwaste
2、fromanimalsChemicalororganicfarming?Difficulties;1.Usingchemicalfertilizershasbecomeverycommoninfarming.chemicalfertilizerscommon常见的,普遍的havesthincommon有---共同点agreatwaytodosthstopcropdiseaseincreaseproductionlong-termuseofthesefertilizersproblemscausedbychemicalfertilizersbydoingthehelpfulb
3、acteriaandpeststheharmfuloneswashoffthesechemicalsinthefoodsupplybuildupovertimeleadtoinaddition2.Insidethereisusuallymorewaterthanvitaminsandminerals.Heismorefatthanshort.sheismoreasingerthananactress.turntoorganicfarmingfocusonkeeptheirsoilrichandfreeofdisease保持土壤肥沃并且免受病害naturalwastefrom
4、animalsberichinkeep---freefrom---keepthesoilfertileeveryfewyears3.Cropssuchaspeasorsoybeansputimportantmineralsbackintothesoil,makingitreadyforcropssuchaswheatorcornthatneedrichandfertilesoil.differentlevelsofsoilpeanutsthatusetheground’ssurfacevegetablesthatputdowndeeproots.prevent---from
5、doing—avoiddoingsthMainideaofthepassage________fertilizerscancausemany________,soorganicfarmingisbecomingmore________.ChemicalproblemspopularStructureofthetextPara1:Usingchemicalfertilizerscanhurtthelandandalsopeople’shealth.Para2:ProblemscausedbychemicalfertilizersPara3:Organicfarmingisbe
6、comingmorepopularwithsomefarmersandmanycustomersPara4:Othermethodstokeepthesoilfertile.ReadingPara1:Usingchemicalfertilizerscanhurtthelandandalsopeople’shealth.1.Whyarechemicalfertilizerssopopularinfarmingtoday?2.Doyouthinkitisreallyagreatway?Theyareagreatwaytostopcropdiseaseandincreasepro
7、duction.NoWhatproblemscanbecausedbyusingchemicalfertilizers?(disadvantage)Firstly,theydamagethelandbykillingthehelpfulbacteriaandpests.Secondly,Chemicals’stayinginthegroundandundergroundwaterforalongtimeaffectscropsand,therefore,animalsandhumans.Andmanyofthech
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