农田土壤养分变化与玉米穗部性状及产量的关系 |
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作者姓名: | 李发民 毛建昌 李向拓 杨金慧 |
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作者单位: | 西北农林科技大学农学院 陕西杨凌712100
(李发民,李向拓),西北农林科技大学农学院 陕西杨凌712100副教授
(毛建昌),西北农林科技大学农学院 陕西杨凌712100(杨金慧) |
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基金项目: | 国家863计划批准项目“玉米高产、高效技术示范推广”(2001AA241054). |
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摘 要: | 在陕西眉县选择农田土壤养分含量不同的地块,研究不同含量的有机质,碱解氮、速效磷、速效钾与玉米果穗穗部性状及产量的关系。试验结果表明,土壤含碱解氮、速效磷、钾在临界值以下时,随着三元素有效含量的增加,玉米果穗长、结实长,行粒数,穗粒数,千粒重和产量都在明显提高。土壤分析结果表明,目前大多数农田土壤有机质、速效磷、钾肥不足,需要增加有机肥、磷、钾肥的投入。
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关 键 词: | 土壤养分 玉米 穗部性状 |
The Relationship between Yield and Maize Ear Traits and Changing Soil Nutrition |
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Authors: | Li Famin Mao Jianchan Li Xiangtuo Yang Jinhui |
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Institution: | (Collage of Agronomy, Northwest A&F University, Yangling, Shaanxi Province, 712100) |
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Abstract: | In order to study the relationship between yield,maize ear treats and organ matter,N-OH,available P and K, we selected field block with different soil nutrition in Mei county, Shaanxi province. The result showed that under the level of N-OH,available P and K in the soil, the ear length,seed length,kernel per row,kernel per ear,1000-kernel weight and yield increased with increasing the available N,P and K. To improve organ matter,available P and K would increase yield for there are defiance organ matter,available P and K in the soil. |
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Keywords: | Soil nutrition Maize Ear traits |
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