种植密度对玉米杂交种邯玉398产量及经济性状的影响

Effects of Planting Density on Yield and Economic Characters of Maize Hybrid Hanyu 398

为了探明玉米杂交种邯玉398的最佳种植密度,在0.6 m等行距条件下,种植密度设60000、67500、75000、82500和90000株/hm^2计5个处理,研究了不同种植密度下玉米杂交种邯玉398产量和经济性状的变化。结果表明:在60000~90000株/hm^2密度条件下,随着种植密度的增大,邯玉398产量呈先升高后降低的变化,其中,种植密度为67500~75000株/hm^2时,产量为11072.51~11151.94 kg/hm^2,显著高于其他密度处理;空秆率呈增加趋势,穗长逐渐缩短,秃尖长度逐渐增加,行粒数逐渐减少,千粒重逐渐降低。研究结果显示邯玉398适宜的种植密度为67500~75000株/hm^2,在生产推广中可根据当地具体的水肥条件进行适当调整,以充分发挥品种优势,获得高产。

In order to find out the best planting density of maize hybrid Hanyu 398,five treatments of 60000,67500,75000,82500 and 90000 plants/hm^2 were set up under the condition of equal row spacing of 0.6 m.The effects of different planting densities on the yield and economic characters of Hanyu 398 were studied.The results showed that the yield increased first and then decreased with the increasing of planting density under the condition of 60000-90000 plant/hm^2.When the planting density was 67500-75000 plant/hm^2,the yield could reach 11072.51-11151.94 kg/hm^2,which was significantly higher than other treatments.With the increasing of planting density,the empty stalk rate showed an increasing trend,the ear length gradually shortened,the bald tip length gradually increased,the row grains gradually decreased,and the 1000-grain weight gradually decreased.The suitable planting density of Hanyu 398 was 67500-75000 plants/hm^2 in production and popularization.We should select reasonable planting density according to water and fertilizer conditions,and give full play to the advantages of variety and obtain high yield.