畜牧兽医杂志2025，Vol.44Issue(3)：26-30,5.DOI:10.7606/j.issn.1004-6704.2025.03.004
种植密度对酒泉地区青贮玉米产量及营养品质的影响
Effect of Planting Density on Yield and Nutritional Quality of Silage Maize in Jiuquan Area
摘要
Abstract
The study aimed to assess the influence of planting densities on silage corn yield,agronomic traits,and nutritional quality indicators in the Jiuquan region,with the objective of determining the optimal planting density for silage corn varieties in this area.The Dajingjiu 26 variety was selected as the experimental subject,and three distinct planting densities were implemen-ted:6.75 × 104 plants/hm2(low),8.25 × 104 plants/hm2(medium),and 9.75 × 104 plants/hm2(high).Measurements were con-ducted at half maturity when the milky line of the corn kernel reached its midpoint.The findings revealed a positive correlation between corn silage yield and increased planting density,reaching its zenith at a density of 9.75×104 plants/hm2.High-density cultivation resulted in a notable increase in dry grass yield by 6.5％compared to medium density and an impressive surge of 24.5％compared to low density.Plant height and ear position exhibited incremental growth with higher planting densities while stem diameter decreased proportionally alongside reduced leaf retention rate.Furthermore,there was a significant re-duction in crude protein content with escalating planting den-sity(P＜0.05).Conversely,neutral detergent fiber and acid detergent fiber content demonstrated an upward trend as planting density increased;high-density cultivation led to an increase of 2.2％—7.7％and 3.6％—14.9％,respectively,compared to medium-or low-density cultivation.Considering all pertinent indicators encompassing biological yield,agro-nomic traits,and quality attributes collectively suggests that Dajingjiu 26 is best suited for cultivation at a density of 8.25 × 104 plants/hm2 in the Jiuquan region.关键词
青贮玉米/种植密度/产量/农艺性状/营养品质Key words
silage maize/planting density/biomass yield/economical character/nutritional quality分类
畜牧业引用本文复制引用
曹健,王志龙,张建明,曹亮,张治龙,柴绍芳..种植密度对酒泉地区青贮玉米产量及营养品质的影响[J].畜牧兽医杂志,2025,44(3):26-30,5.基金项目
甘肃省科技计划资助甘肃省科技厅民生科技专项乡村振兴专题(21CX6NF232) （21CX6NF232）
酒泉市科技局科技支撑计划项目(2023CA3003) （2023CA3003）
