| 施钾对高寒区饲用玉米产量与营养品质以及伤流液的影响 |
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| 引用本文： | 左启华,张立峰,李会彬,杜 雄,边秀举.施钾对高寒区饲用玉米产量与营养品质以及伤流液的影响[J].西北农业学报,2011,20(1):65-69. |
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| 作者姓名： | 左启华 张立峰 李会彬 杜 雄 边秀举 |
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| 作者单位： | 1. 河北农业大学农学院,河北保定,071001;农业部张北农业资源与生态环境重点野外科学观测试验站,河北张家口,076450
2. 河北农业大学农学院,河北保定,071001 |
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| 基金项目： | 中加合作IPNI项目; 国家“十一五”科技支撑计划项目(2006BAD15B05); 河北省“十一五”科技支撑计划项目(06220901D) |
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| 摘 要： | 在冀西北高寒区旱砂地条件下,研究钾肥施用量对饲用玉米产量和营养品质形成、根系吸收能力的影响。结果表明,钾肥可显著提高饲用玉米的生物产量,增产5.3%~27.7%;施用钾肥后,粗纤维、粗灰分和全钾含量分别增加了6.9%、18.0%和85.9%,生物累积量分别增加36.1%、50.4%和137.1%;粗蛋白、粗脂肪和全磷含量明显降低,伤流强度、各养分流量和钾离子含量明显提高,其中钾离子流量和含量分别提高240.7%和42.9%,茎基部伤流液中全氮和无机磷含量降低。说明均衡的养分管理是提高饲用玉米产量及肥料效应的关键。
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| 关 键 词： | 饲用玉米 生物产量 钾肥 伤流液 营养品质 |
Effect of Potassium Application on Biomass,Nutritional Quality and Bleeding Sap of Forage Maize in Cold Plateau |
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| ZUO Qihu,ZHANG Lifeng,LI Huibin,DU Xiong and BIAN Xiuju.Effect of Potassium Application on Biomass,Nutritional Quality and Bleeding Sap of Forage Maize in Cold Plateau[J].Acta Agriculturae Boreali-occidentalis Sinica,2011,20(1):65-69. |
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| Authors: | ZUO Qihu ZHANG Lifeng LI Huibin DU Xiong and BIAN Xiuju |
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| Institution: | ZUO Qihua1,ZHANG Lifeng1,2,LI Huibin1,DU Xiong1 and BIAN Xiuju1(1.College of Agronomy,Agriculture University of Hebei,Baoding Hebei 071001,China,2.Key Field Observation and ResearchStation of Zhangbei Agricultural Resource and Ecological Environment,Ministry of Agriculture,Zhangjiakou Hebei 076450,China) |
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| Abstract: | A field experiment was conducted to study the effects of potassium application rate on biomass yield,forage quality,and root absorption capacity of forage maize(Zea mays L.) in sand chestnut soil.The results indicated that potassium fertilizer increased forage maize biomass yield by 5.3%-27.7% significantly.Potassium fertilizer depressed crude protein,ether extract and total phosphorus content,meanwhile,which significantly increased content of crude fiber,crude ash and total potassium by 6.9%,18.0% and 85.9... |
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| Keywords: | Forage Maize Biomass Potassium fertilizer Bleeding sap Forage feeding quality |
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