玉米新品种迪卡008种植密度试验

Experiment on planting density of new maize variety Dekarl 008

为探索迪卡008适宜的种植密度,进行了4个不同种植密度对迪卡008的生育期、抗病性、植株性状及产量构成因素的影响试验。结果表明,种植密度对迪卡008的生育期、抗病性影响不大;对产量影响显著,在中等以上肥力条件下,适宜的种植密度为5.25万～6.00万株/ha,最佳种植密度为5.70万株/ha,种植密度超过6.00万株/ha时产量下降极显著。

In order to investigate the suitable planting density for new maize variety Dekarl 008, four different planting densities were used in the experiment to analyze their effects on growth stage, disease resistance, agronomic traits and yield components, etc. The results indicated that, planting density had no obvious effects on the growth stage and resistance to disease, but significant on the yield. Under middle or higher soil fertility, the suitable planting density for Dekarl 008 was 52 500-60 000 plants/ha, and the best planting density was 57 000 plants/ha. When the planting density was over 60 000 plants/ha, the yield of Dekarl 008 decreased significantly.