河套灌区向日葵种植行距密度效应研究

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Research on the Effect of Row Spacing Density of Sunflower Planting in Hetao Irrigation Area

LI Bin-ruil，ZHANG Tig-ting2，WANGRui-zhen1 etal（1.Wuyuan CountyAgriculuralandAnimalHusbandryTchnologyExtension Center，Bayur，InerMongoliaO；2InerogoliacademyofAgriculturalandAnimalHusbandrySienes，Ht，o golia 010031）

AbstractObjetive]Tofindout thereasonableplantingspacinganddensityofsunflowerinHetaoirigationarea.Method]Atwofactor （rowspacingnddesity），re-velsploeexpemetassuptoistgateeetsofdetpantingspacingdsit sunfloweryield，ieldcompositiongroomicrits，edtraitsandothrfactosResult]etreametsofowxpasionanddsity ductionhadnoetosunfloerertlityAtthaeospacinglvel，aplatigensitreasd，suflowrplanteighteasd discdiameterdeaddinggiihtihtgthdtheasdAttsiello erplantheightincreasedasplantspacingdecreasedwithincreasinglargerowspacingAttesaedensitylevel，R2treatment（argerow spacingof1.1）adheigstinglediscgaiweigtandeedcommercialty，with2D2treamentsowingthestcooicper formance.[Conclusion] The sunflower planted withthe highest yield should be grown with a large row spacing of 106cm ，a small row spacing of 40cm ，and a density of 25 132 plants/hm2（plant spacing of 55cm ），which has the best overall performance in terms of yield and its components，agronomictraits，costinputs，andeconomicbenefits，andissuitableforlarge-scalepromotioninHetao iigatioarea.

KeywordsSunflower；Row spacing；Density； Yield；Economic efficiency

向日葵（HelianthusannuusL.）是世界四大油料作物之一，是内蒙古河套灌区的主要经济作物。（剩余6300字）