Effects of Different Planting Patterns on Rice Yield and Economic Benefit

摘要

「0biective」Thisstudyaimedtoinvestigatetheeffectsofcultivationmeth—odsonriceyieldandeconomicbenefitsintheDongtingLakearea．「Method」Afieldplotexperimentwasconductedbyadoptingthreedifferentplantingpatternsofartifi-ciaIsowing，artificiaIthrowingandmechanicaItransplanting．「Result」Riceyieldofmechanicaltransplantingwas7．84％and24．19％higherrespectivelythanthatofar—tificiaIsowingandartificiaIthrowing．Theeffectivepaniclesperunitareaofmechani．caItransplantinganda~ificiaIthrowingwerelessthanthatofartificiaIsowing．Onthecontrary．grainsperspike．1000－grainweightandseedsettingrateofmechani—caltransplantingandartificialthrowingwereIessthanthoseofartificiaIsowing．Me-chanicaltransplantingofricebroughtthehighestnetincome1177916Vuan／hm2，whichwas1697-72and3631．84yuan／hm0higherthanthatofartificiaIthrowinganda~ificiaIsowing．【ConclusionlMechanicaItransplantingcouldpromotericeproductivityinDongtingLakearea，andcouldincreasericeyieldsandeconomicreturns．