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| 肥密互作对榆林春玉米植株性状及产量的影响 |
| Effect of Fertilization and Planting Density Interaction on Plant Traits and Yield of Spring Maize in Yulin Region |
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| DOI： |
| 中文关键词: 春玉米 种植密度 施肥方案 生物性状 产量 |
| 英文关键词:Spring maize Planting density Fertilization scheme Plant traits Yield |
| 基金项目:广东省现代农业产业园项目（GDSCYY2022-046）。 |
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| 摘要点击次数: 69 |
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| 中文摘要: |
| 为探索陕西榆林春玉米主产区适宜的玉米施肥方案和种植密度，了解不同密度与施肥方案对春玉米产量及植株性状的变化规律，以榆林当地主推的两个玉米品种为试验材料，研究了3个施肥方案和4个种植密度处理对春玉米植株性状和产量的影响。结果表明：两个品种均呈现茎粗随着密度增加而降低、株高和穗位高度随密度增加而增高的趋势；种植密度对两个品种的穗行数无显著影响，其他穗部性状多数以密度9万株/ hm2和常规减氮25%+含腐植酸水溶肥的组合达到较高值；两个品种的产量随着密度增加呈先升高后降低的趋势，均以密度9万株/ hm2时达到产量最高值；按照当地常规施肥量减氮25%+含腐植酸水溶肥处理获得了不同施肥处理中的相对最高产量和效益。 |
| 英文摘要: |
| To explore suitable fertilization schemes and planting densities for spring maize in the main production areas of Yulin, Shaanxi Province, this study examined the effects of three fertilization schemes and four planting densities on plant traits and yield, using two locally promoted maize varieties as experimental materials. The results showed that for both varieties, stem diameter decreased, while plant height and ear height increased with increasing planting density. Planting density had no significant effect on the number of kernel rows per ear, while most other ear-related traits reached higher values under the combination of 90,000 plants/hm2 and 25% nitrogen reduction with water-soluble fertilizer containing humic acid. The yields of both varieties increased at first and then decreased as planting density increased, with the highest yields recorded at 90,000 plants/hm2. Among all fertilization treatments, the 25% nitrogen reduction combined with humic acid water-soluble fertilizer produced the highest relative yield and benefit. |
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