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【目的】摸清桂青贮一号玉米品种的适宜种植密度和施肥量,旨在为桂青贮一号玉米高产高效栽培技术提供科学依据。【方法】采用肥料为主区、种植密度为副区的裂区设计,进行不同施肥量和种植密度试验试验,分小区收获并考种。【结果】A4处理(375.0kg/ha复合肥+尿素489.1kg/ha+钙镁磷肥441.2kg/ha+氯化钾375.0kg/ha)的平均产量最高,为26623.5kg/ha,极显著高于其他处理;B4处理(69000株/ha)的平均产量最高,为26058.5kg/ha;相同施肥水平下,种植密度在一定范围内,桂青贮一号玉米产量随种植密度的增加而增高,随后又呈下降趋势;相同种植密度条件下,施肥水平在一定范围内时,桂青贮一号玉米的产量随着肥料施用量的增加而增加,随后又呈下降趋势。【结论】桂青贮一号玉米种植密度度为69000株/ha,施肥量为每公顷施用375.0kg复合肥作底肥,追肥每公顷施尿素391.3~489.1kg+钙镁磷肥352.9~441.2kg+氯化钾300.0~375.0kg时能获得较高产量。
【Objective】 The objective of this study was to find out the proper planting density and fertilizer amount of Gui-silan No.1 maize variety and to provide a scientific basis for the high yield and high-efficient cultivation technology of Gui-sizhuang No.1 maize. 【Method】 Fertilizer was used as the main area and the planting density was designed as a subzone. The experiment of different fertilization and planting density was conducted. The plot was harvested and tested. 【Result】 The average yield of A4 treatment (375.0kg / ha compound fertilizer + 489.1kg urea + 441.2kg / ha magnesium phosphate fertilizer and 375.0kg / ha potassium chloride) was the highest, being 26623.5kg / ha, which was significantly higher than other treatments ; B4 treatment (69000 plants / ha) the highest average yield, 26058.5kg / ha; under the same fertilization level, the planting density within a certain range, the yield of Guizhongzhu 1 maize increased with planting density, and then declined Trend. Under the same planting density, when the fertilization level was within a certain range, the yield of Gui-silan No.1 maize increased with the increase of fertilizer application, and then decreased again. 【Conclusion】 The sowing density of maize silage No.1 was 69000 plants / ha. The amount of fertilizer was 375.0kg of compound fertilizer per hectare. The top dressing was 391.3 ~ 489.1kg urea per hectare, 352.9 ~ 441.2kg per hectare and potassium chloride 300.0 ~ 375.0kg can get higher yield.