| 施氮量对不同类型夏谷品种农艺性状及产量的影响 |
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| 引用本文： | 宋淑贤,田伯红,王建广,刘艳丽,张立新,赵光辉.施氮量对不同类型夏谷品种农艺性状及产量的影响[J].河北农业科学,2014,18(6):1-6. |
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| 作者姓名： | 宋淑贤 田伯红 王建广 刘艳丽 张立新 赵光辉 |
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| 作者单位： | 沧州市农林科学院,河北沧州,061001 |
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| 基金项目： | 国家现代农业产业技术体系项目 |
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| 摘 要： | 分别以冀谷19和沧谷4号为试验材料,采取分3次施用氮肥〔m（基肥）∶m（拔节肥）∶m（孕穗肥）=4∶3∶3〕的施肥方法,研究了施氮量0（CK）、75、150、225和300 kg/hm^2处理对不同夏谷品种群体结构、农艺性状及产量形成的影响。结果表明：施用氮肥能够显著改善谷子的产量性状、明显提高籽粒产量,在施氮量75～300 kg/hm^2条件下,随着施氮量的增加,沧谷4号的单位面积有效穗数、穗粒重和籽粒产量均呈先增加后降低趋势,但不同施氮水平各项指标值差异均不显著,其中在施氮量为150 kg/hm^2时所有指标值均达到最高;而冀谷19的各项指标值均一直呈逐渐增加趋势,不同施氮水平处理下单位面积有效穗数和穗粒重差异不显著,施氮量为225～300 kg/hm^2时籽粒产量较高且显著〉其他施肥处理。灌浆后期沧谷4号的光合产物生产能力和茎叶中营养物质向穗部运转的能力均较强,在相同施氮量条件下各项指标值和籽粒产量均显著高于冀谷19。在生产上,沧谷4号施肥应采取重施底肥、早追肥的措施,适宜施氮量为150 kg/hm^2;冀谷19施肥应采取底肥、中期追肥和灌浆期追肥并重的措施,适宜施氮量为225 kg/hm^2。
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| 关 键 词： | 施氮量 夏谷品种 农艺性状 产量 |
Effect of Nitrogen Application Rate on Agronomic Trait and Yield of Summer Millet |
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| SONG Shu-xian,TIAN Bo-hong,WANG Jian-guang,LIU Yan-li,ZHANG Li-xin,ZHAO Guang-hui.Effect of Nitrogen Application Rate on Agronomic Trait and Yield of Summer Millet[J].Journal of Hebei Agricultural Sciences,2014,18(6):1-6. |
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| Authors: | SONG Shu-xian TIAN Bo-hong WANG Jian-guang LIU Yan-li ZHANG Li-xin ZHAO Guang-hui |
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| Institution: | (Cangzhou Academy of Agriculture and Forestry Sciences, Cangzhou 061001, China) |
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| Abstract: | Using both Jigu 19 and Canggu No.4 as materials,a method of 3 times nitrogen application m（ base fertiliizer） ∶ m（ nitrogen at jointing stage） ∶ m（ nitrogen at boot stage） = 4∶ 3∶ 3] was adopted to study the effect of nitrogen application rate on agronomic trait and yield of summer millet at the nitrogen application rate of0（ CK）,75,150,225 and 300 kg / hm^2.The results showed that the characteratics and the grain yield were improved significantly with application of nitrogen.Under 75-300 kg / hm^2 of nitrogen application rate, the effective panicles per unit area,grain weight per spike and grain yield first increased and then reduced with the nitrogen level went up,but the targeted values of different nitrogen level showed no significant discrepancy and reached the hightest point at the nitrogen level of 150 kg / hm^2,while the targeted values of Jigu 19 increased continuously and showed no significant discrepancy on effective panicles per unit area and grain weight per spike,the grain yield under 225-300 kg / hm^2 of nitrogen application rate was significantly higher than other conditions.The productivity of photosynthetic product and the ability of transfer nutriment to panicle of Canggu No.4 at late filling stage were better,the values and grain yield under the same nitrogen conditions were all significantly higher than that of Jigu 19.In production,a method should be adopted as applying base fertilizer and topdressing earlier with Canggu No.4,the optimal nitrogen level was 150 kg / hm^2.Jigu 19 should apply base fertilizer and topdressing at metakinesis and pustulation period,the optimal nitrogen level was 225 kg / hm^2. |
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| Keywords: | Nitrogen fertilizer rate Summer millet Agronomic trait Yield |
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