英语翻译Farmerscanproducemorebyplantingseveraldifferentcropsinthesamefield.Buttheirsuccessdependsonwhichcropstheyplanttogetherandhowtheymix（混合）theminthefield.Untilnow,theonlywaythefarmerscouldlearnwhi
英语翻译
Farmerscanproducemorebyplantingseveraldifferentcropsinthesamefield.Buttheirsuccessdependsonwhichcropstheyplanttogetherandhowtheymix（混合）theminthefield.Untilnow,theonlywaythefarmerscouldlearnwhichcropsgrowbesttogetherwastoplantthemandwaitfortheresults.Nowhowever,acomputercangivethemanswers.AnewcomputerprogramwrittenbyDrJohnVanderwellofMichiganUniversitycantellafarmerwhichplantsgrowwelltogetherandwhichdonot.Itcantellhimhowtoplantthedifferentcrops;ifheshouldplanteachinaseparaterow,ormixthecropsinthesamerow.Itcantellthefarmerhowchangesinplantingeachofthecropswillaffecttheproductionofallofthem.Anditcantellhimwhichplantscanhelpreducelosses（损失）fromdiseases.
56.Whichofthefollowingbestgivesthemainideaofthepassage?