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氮肥对库布齐沙地柳枝稷目标产量的影响

陶梦 王铁梅 苏德荣 吕世海 陈俊翰

陶梦, 王铁梅, 苏德荣, 吕世海, 陈俊翰. 氮肥对库布齐沙地柳枝稷目标产量的影响[J]. 北京林业大学学报, 2017, 39(7): 87-95. doi: 10.13332/j.1000-1522.20160421
引用本文: 陶梦, 王铁梅, 苏德荣, 吕世海, 陈俊翰. 氮肥对库布齐沙地柳枝稷目标产量的影响[J]. 北京林业大学学报, 2017, 39(7): 87-95. doi: 10.13332/j.1000-1522.20160421
TAO Meng, WANG Tie-mei, SU De-rong, LÜ Shi-hai, CHEN Jun-han. Effects of nitrogen fertilizers on the yield of switchgrass in Kubuqi Sandland, northern China[J]. Journal of Beijing Forestry University, 2017, 39(7): 87-95. doi: 10.13332/j.1000-1522.20160421
Citation: TAO Meng, WANG Tie-mei, SU De-rong, LÜ Shi-hai, CHEN Jun-han. Effects of nitrogen fertilizers on the yield of switchgrass in Kubuqi Sandland, northern China[J]. Journal of Beijing Forestry University, 2017, 39(7): 87-95. doi: 10.13332/j.1000-1522.20160421

氮肥对库布齐沙地柳枝稷目标产量的影响

doi: 10.13332/j.1000-1522.20160421
基金项目: 

“十二五”国家科技支撑计划项目 2015BAC06B01

详细信息
    作者简介:

    陶梦。主要研究方向:草地生态。Email:taomeng0216@bjfu.edu.cn  地址:100083 北京市海淀区清华东路35号北京林业大学林学院

    责任作者:

    苏德荣,教授,博士生导师。主要研究方向:草地生态水文过程。Email: suderong@bjfu.edu.cn  地址:同上

  • 中图分类号: S288

Effects of nitrogen fertilizers on the yield of switchgrass in Kubuqi Sandland, northern China

  • 摘要: 柳枝稷是一种生物量高、防风固沙效果好,具有良好发展前景的草本能源植物。为了将暖季型的柳枝稷引种到库布齐沙地,以柳枝稷品种“BL-1”为试验材料,研究了库布齐沙地柳枝稷目标产量(生物量、粗蛋白产量、中性洗涤纤维产量、酸性洗涤纤维产量)对施用尿素和硫酸铵两种氮肥的响应。硫酸铵和尿素各设置4个施氮水平0、75、150和225 kg/hm2,每个处理设置3个重复,分别于苗期、分蘖期和拔节期施入各试验小区,施入量分别为施氮量的1/5、2/5和2/5。在柳枝稷的拔节期、孕穗期、初花期分别测定其株高、茎粗、叶面积、地上生物量。结果表明:硫酸铵和尿素的施用均可以显著提高柳枝稷的产量,施用硫酸铵后,柳枝稷的产量随着施氮量的增加而呈现逐渐增加的趋势;施用尿素后,柳枝稷的产量随着施氮量的增加出现先升高后降低的动态趋势,且产量最高点出现在施氮量为150 kg/hm2时。在施氮量为75和150 kg/hm2时硫酸铵和尿素两种肥料对柳枝稷的产量的增加程度差异不显著;在施氮量为225 kg/hm2时,硫酸铵对柳枝稷的产量提高程度显著高于尿素。柳枝稷个体大小与叶面积是影响柳枝稷产量的重要因素,氮肥的施用对于柳枝稷生长的促进作用在拔节期最明显;对于柳枝稷叶面积的促进作用在孕穗期最明显;对于柳枝稷增产的促进作用在初花期最明显。硫酸铵相较于尿素更有利于促进柳枝稷的增产。

     

  • 图  1  不同施肥方案下柳枝稷株高与产量的相关关系

    yTyBTyEByASyU分别为拔节期、孕穗期、初花期以及分别施用硫酸铵和尿素的产量。下同。

    Figure  1.  Correlation between plant height and yield of switchgrass under different fertilization treatments

    yT, yBT, yEB, yAS and yU mean the yield of jointing stage, booting stage, early blooming stage, applying ammonium and urea, respectively. The same below.

    图  2  不同施肥方案下柳枝稷茎粗与产量的相关关系

    Figure  2.  Correlation between stem diameter and yield of switchgrass under different fertilization treatments

    图  3  不同施肥方案下柳枝稷叶面积与产量的相关关系

    Figure  3.  Correlation between leaf area and yield of switchgrass under different fertilization treatments

    图  4  不同施肥方案下柳枝稷株高与叶面积的相关关系

    Figure  4.  Correlation between plant height and leaf area of switchgrass under different fertilization treatments

    图  5  不同施肥方案下柳枝稷茎粗与叶面积的相关关系

    Figure  5.  Correlation between stem diameter and leaf area of switchgrass under different fertilization treatments

    图  6  不同施肥方案下柳枝稷株高与茎粗的相关关系

    Figure  6.  Correlation between plant height and stem diameter of switchgrass under different fertilization treatments

    表  1  氮肥对柳枝稷生长及生物量的影响

    Table  1.   Effects of two nitrogen fertilizers on the growth and biomass of switchgrass

    氮肥种类
    N fertilizer form
    施氮量/(kg·hm-2)
    N application rate/(kg·ha-1)
    地上生物量/(t·hm-2)
    Aboveground biomass/(t·ha-1)
    株高
    Plant height/cm
    茎粗
    Stem diameter/mm
    叶面积
    Leaf area/cm2
    硫酸铵Ammonium sulfate015.55Ad112.19Ac4.51Ab31.92Ac
    7518.62Ac123.95Ab4.80Aab34.15Ac
    15023.57Ab134.99Ba4.96Aa40.96Ab
    22527.62Aa139.83Aa5.07Aa46.95Aa
    尿素Urea015.55Ac112.19Ac4.51Ac31.92Ac
    7518.55Ab131.61Ab5.04Abc35.89Ab
    15024.22Aa150.60Aa5.18Aa42.98Aa
    22523.19Ba143.62Aa4.71Bab40.42Ba
    注:表中同列小写字母表示施氮量之间差异显著(P<0.05),大写字母表示两种氮肥之间差异显著(P<0.05)。下同。Notes: data within the same column followed different lowercase letters indicate significant difference among different nitrogen application rates at P<0.05 level, and data followed different capital letters indicate significant difference among different nitrogen fertilizers at P<0.05 level. The same below.
    下载: 导出CSV

    表  2  氮肥对柳枝稷目标产量的影响

    Table  2.   Effects of two nitrogen fertilizers on the yield of switchgrass

    氮肥种类
    N fertilizer form
    施氮量/(kg·hm-2)
    N application rate/(kg·ha-1)
    粗蛋白Crude protein(CP)中性洗涤纤维
    Neutral detergent fiber(NDF)
    酸性洗涤纤维
    Acid detergent fiber (ADF)
    含量
    Content/%
    产量/(t·hm-2)
    Yield/(t·ha-1)
    含量
    Content/%
    产量/(t·hm-2)
    Yield/(t·ha-1)
    含量
    Content/%
    产量/(t·hm-2)
    Yield/(t·ha-1)
    硫酸铵Ammonium sulfate05.23Ab0.81Ac68.60Aa10.67Ac36.20Aa5.63Ab
    755.53Aab1.03Ac68.14Aa12.69Ab35.45Ab6.61Ab
    1505.87Aab1.38Ab66.06Bb15.57Aa34.88Ab8.22Aa
    2256.26Aa1.73Aa65.24Ac18.02Aa33.75Ac9.33Aa
    尿素Urea05.23Ab0.81Ad68.60Aa10.67Ac36.20Aa5.63Ab
    755.15Bb0.95Ac68.07Aa12.64Ab35.51Aab6.59Ab
    1505.66Aa1.37Aa67.54Aab16.36Aa34.92Abc8.46Aa
    2255.27Bb1.22Bb66.61Ab15.45Ba34.39Ac7.98Ba
    下载: 导出CSV

    表  3  2种氮肥对土壤pH的影响

    Table  3.   Effects of two nitrogen fertilizers on soil pH

    施氮量/(kg·hm-2)
    N application rate/(kg·ha-1)
    土壤pH Soil pH
    硫酸铵Ammonium sulfate尿素Urea
    09.38Aa9.38Aa
    758.63Bb9.12Aab
    1508.51Bb8.93Ab
    2258.44Bb8.75Ab
    注:表中同列不同小写字母表示施氮量之间差异显著(P<0.05),同行不同大写字母表示两种氮肥之间差异显著(P<0.05)。Notes: data within the same column followed different lowercase letters indicate significant difference among different nitrogen application rates at P<0.05 level, and data within the same row followed different capital letters indicate significant difference among different nitrogen fertilizers at P<0.05 level.
    下载: 导出CSV
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  • 收稿日期:  2016-12-29
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