密植滴灌技术对玉米产量构成的影响OA

To explore the effect of dense planting drip irrigation technology on maize yield composition,this study used three maize varieties-Huangjinliang MY73,Anke 985 and Zhengdan 958 as experimental materials.Two cultivation methods were applied:drip irrigation planting and conventional planting.Planting densities were set at 6.75×104,8.25×104,9.00×104,9.75×104 and 10.50×104 plants/ha,to investigate their effects on ear length,ear diameter,100-grain weight and yield of maize.The results indicated that under conventional fertilization treatment,AK985 achieved its highest yield at a density of 9.00×104 plants/ha,while MY73 and ZD958 attained their highest yields at 9.75×104 plants/ha.Under drip fertigation treatment,the highest yields for AK985,MY73,and ZD958 were obtained at densities of 9.00×104,10.50×104,and 9.00×104 plants/ha,respectively.Beyond these optimal densities,further increases in planting density did not lead to higher yields.These results showed that maize yield could be significantly enhanced by appropriately increasing planting density;however,excessively high density leads to a gradual decline in yield.The yield improvement under drip irrigation fertigation is more pronounced compared to conventional planting.Therefore,selecting suitable planting densities and irrigation methods is crucial for achieving high yields in maize production.