Effect of Different Planting Densities and Cultivation Methods on Photosynthesis Character,Agronomic Traits and Yield of Liaodan565

Effect of different planting densities and cultivation methods on photosynthesis character,agronomic traits and yield were conducted with dwarfing high density resistance maize Liaodan565.The results showed that LAI was an increase trend with planting density increased,LAI of wide-narrow row spacing cultivation was higher than that of other cultivation methods,when planting density surpass 6.75×104 plant/ha.Photosynthetic rate was almost express to a single peak curve except for traditional cultivation,which photosynthetic rate of two-one row interval planting and wide-narrow row spacing cultivation methods were higher than that of other cultivation methods when planting density surpassed 6.0×104 plant/ha.Compared with Lov of ear and below ear,Lov of above ear was relative higher.The ear height was an increase trend and the ear length and 100-kernal weight of that were decrease trends with planting density increased.Compared with other cultivation methods,ear diameter was relative higher,which and ear length of that was changed smaller in the double line at one width ridge.The yield result at different ecological zones showed that differences between cultivation methods and planting densities were all quite significantly,the interaction between cultivation methods and planting density was very significant.Yield was easy to obtain high yield when planting density exceeded 6.0×104 plant/ha on the basis of narrow row spacing and short planting spacing,double line at one width ridge or wide-narrow row spacing cultivation.