种植密度对玉米新品种德利农318产量及产量构成因素的影响

Effect on Grain Yield and Yield Components of New Variety Maize Delinong 318 of Density

以德利农318为试验材料,探讨不同密度对德利农318玉米籽粒产量的影响,并同时研究玉米的千粒重、穗数以及穗粒数的变化。结果表明,随种植密度增加,德利农318玉米籽粒产量先降低后上升,最大值密度为82 500株/hm^2;随种植密度增加,玉米穗数增加,最大值出现在密度为90 000株/hm^2,穗粒数及千粒重下降,最大值均出现在密度为60 000株/hm^2。因此,在黄淮海现有的生态条件下,德利农318玉米适宜的种植密度为82 500株/hm^2。

Delinong 318 was used as test material to study effect on grain yield and its components factors including 1000-grain weight,spike number and grains per spike of density. The results showed that grain yield of Delinong 318 was decreased firstly and increased with increasing density then. Peak value of grain yield was 82 500 plant per hectare. Spike number was increased with increasing density.Peak value of spokes number was plant per hectare. Grains per spike and 1000-grain weight of maize were decreased with increasing density. Peak value of grains per spike and 1000- grain weight was 60 000 plant per hectare. There fore,in ecological conditions of Huang-Huai region, suitable density of Delinong 318 was 82 500 plant per hectare.