%0 Journal Article %T Patiencewithdensityandreasonableuseofdifferentplanttypesinmaizehybrids %A 李玉玲 %A 苏祯禄 %A 孙书库 %A 梁本国 %A 刘征 %J 华北农学报 %P 118-122 %D 1993 %R 10.7668/hbnxb.1993.S2.021 %X TheappropriatedensityofthehybridswithdifferentplantmorphotypesandgrainyieldofmainmaizehybridsinHenanprovinceunderdifferentconditionsandindifferentplaceshavebeenstudiedformanyyears.Theresultsindicaltethatallthelightintensityinmiddleandlowpartoftheplant,thesingleleafweight(SLW)andthephotosyntheticintensitydecreasere-markablywiththeincreaseofplantdensityandleafareaindex(LAI),andthatallthecharactersofthesirgleplantyieldbecorneinferiorwithdifferentmagnitudes.Buttheseriousnessisslighterforcompacttypehybridsthanthatforspreadones.Underhighyieldcondition,thedesirabledensityis4250to5000plantspermu(666.67m~2)forcompactmaizehybridsand3300to3500plantsforspreadones.Theyielddifferencesbetweenthetwokindsofhybridvarywiththeyieldlevels. %K maize %K hybrid %K density %K planttype %U http://www.hbnxb.net/CN/abstract/abstract6472.shtml