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1、increasericeharvestswithoutexpandingtheareaofthefields.In1950,Chinesefarmerscouldproduceonlyfiftymilliontonsofrice.Inarecentharvest,however,nearlytwohundredmilliontonsofricewasproduced.Theseincreasedharvestsmeanthat22%ofthwartworld’speoplearefedfromjust7%ofthefarmlandinChina.DrYuanisno
2、wcirculatinghisknowledgeinIndia,Vietnamandmanyotherlessdevelopedcountriestoincreasetheirriceharvests.Thankstohisresearch,farmersareproducingharveststwiceaslargeasbefore. DrYuanisquitesatisfiedwithhislife.However,hedoesn'tcareaboutbeingfamous.Hefeelsitgiveshimlessfreedomtodohisresearch.
3、Hewouldratherkeeptimeforhishobbies.Heenjoyslisteningtovolinmusic,playingmah-jong,swimmingandreading.Spendingmoneyonhimselforleadingacomfortablelifealsomeansverylittletohim.Indeed,hebelievesthatapersonwithtomuchmoneyhasmoreratherthanfewertroubls.HethereforegivesmillionsofYuantoequipothe
4、rsfortheirresearchinagriculture. Justdreamingforthings,however,costsnothing.LongagoDrYuanhadadreamaboutriceplantsastallassorghum.Eachearofricewasasbigasanearofcornandeachgrainofricewasashugeasapeanut.DrYuanawokefromhisdreamwiththehopeofproducingakindofricethatcouldfeedmorepeople.Now,ma
5、nyyearslater,DrYuanhasanotherdream:toexporthisricesothatitcanbegrownaroundtheglboe.Onedreamisnotalwaysenough,especiallyforapersonwholovesandcaresforhispeople. Chemicalororganicfarming? Overthepasthalfcentury,usingchemicalfertilizershasvecomeverycommoninfarming.Manyfarmerswelcomedthema
6、sgreatwaytostopcropdiseaseandincreaseproduction.Recently,however,scientistshavebeenfindingthatlong-termuseofthesefertilizerscancausedamagetothelandand,evenmoredangerous,topeople’shealth. Whataresomeoftheproblemscausedbychemicalfertilizers?First,theydamagethelandbykillingthehelpfulbacte
7、riaandpestsaswellastheharmfulones.Chemicalsalsostayinthegroundandundergroundwaterforalonogtime.Thisaffectscropsand,therefore,animalsandhumans,sincechemicalsgetinsidethecropsandcannotjustbewashedoff.Thesechemicalsinthefoodsupplybuildupinpeople’sbodiesovertime.Manyofthesechemicalscanle