施肥对无芒雀麦和老芒麦种子产量的影响 |
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引用本文: | 毛培胜,韩建国,王培. 施肥对无芒雀麦和老芒麦种子产量的影响[J]. 草地学报, 2000, 8(4): 273-278 |
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作者姓名: | 毛培胜 韩建国 王培 |
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作者单位: | 中国农业大学草地研究所,北京 |
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摘 要: | 以无芒雀麦和老芒麦为材料,研究不同施肥处理对其种子产量的影响,结果表明,无芒省麦种子产量随着春季施氮量的增加而增加,其中以施氮200kg/hm^2的种子产量最高;而秋季则以施氮100kg/hm^2的种子产量最高,春秋分期施100kgN/hm^2(秋季70kgN/hm^2+春季30kgN/hm^2)种子产量不仅高于分期施200kgN/hm^2,而朋也高于春季或秋季其它施肥处理,此外,施肥可以大幅度提
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关 键 词: | 无芒雀麦 老芒麦 种子产量 施肥 |
Effects of Fertilizer Application on Seed Yield of Smooth Bromegrass and Siberian Wildrye |
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Abstract: | The experiments of nitrogen application were conducted with smooth bromegrass ( Bromus inermis L. ) and siberian wildrye ( Elymus sibiricus L. ) to study the changes of seed yield. Seed yield of smooth bromegrass was improved with the application N rate increasing in spring, and maximum seed yield was harvested at application 200kgN/hm 2. In autumn fertilizer treatments maximum seed yield was attained at 100kgN/hm 2. Seed yield of smooth bromegrass harvested at split application (Autumn 70kgN/hm 2 + Spring 30kg N/hm 2) was not only higher than split application 200kgN/hm 2, but also than spring or autumn application. Seed yield of siberian wildrye growing three years was increased greatly by application. |
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Keywords: | Smooth bromegrass Siberian wildrye Seed yield Fertilizer applicatd |
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