天津农业科学2026，Vol.32Issue(4)：14-20,7.DOI:10.3969/j.issn.1006-6500.2026.04.003
不同种植密度对玉米品种'安玉308'产量和主要农艺性状的影响
The Effects of Different Planting Densities on Yield and Main Agronomic Traits of Maize Variety'Anyu 308'
摘要
Abstract
To further explore the optimal planting density of'Anyu 308',an experiment was conducted at the Yonghe Experimental Base of Anyang Academy of Agricultural Sciences in 2025.Six planting density gradients were set:60 000,67 500,75 000,82 500,90 000 and 97 500 plants·hm-2.Yield and related agronomic traits were investigated and analyzed.The results showed that with the increase in planting density,the grain yield of'Anyu 308'increased first and then decreased.The highest grain yield of 13 552.43 kg·hm-2 was obtained at 75 000 plants·hm-2.However,the grain yield per plant showed a continuous decreasing trend with increasing planting density.The lodging and root-lodging rate began to increase when the planting density exceeded 75 000 plants·hm-2.Mean-while,plant height increased significantly when the density exceeded 75 000 plants·hm-2,while the stem diameter of the third intern-ode decreased significantly above this density.Statistical analysis indicated that the coefficient of variation of barren tip length was the highest(63.80%),showing the greatest response to planting density.Grain yield per plant was negatively correlated with barren tip length,and positively correlated with ear diameter and kernels per row.In summary,based on multiple comparisons of yield traits and binomial regression analysis,the suitable planting density for'Anyu 308'is determined to be between 75 000 and 82 500 plants·hm-2.关键词
'安玉308'/种植密度/产量/回归分析Key words
'Anyu 308'/planting density/yield/regression analysis分类
农业科技引用本文复制引用
李鑫,张莹莹,赵鋆,卢道文,闫佳,董文恒..不同种植密度对玉米品种'安玉308'产量和主要农艺性状的影响[J].天津农业科学,2026,32(4):14-20,7.基金项目
安阳市重点研发与推广专项(2023C01NY032) （2023C01NY032）
