| 施氮量对一年生黑麦草生长特性的影响 |
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| 引用本文： | 刘高军,韩建国,魏臻武,王小山,武自念,杨云,甘欣,姚喜红.施氮量对一年生黑麦草生长特性的影响[J].草原与草坪,2011,31(1):33-36,41. |
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| 作者姓名： | 刘高军 韩建国 魏臻武 王小山 武自念 杨云 甘欣 姚喜红 |
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| 作者单位： | 刘高军,魏臻武,LIU Gao-Jun,WEI Zhen-wu(甘肃农业大学,草业学院/草业生态系统教育部重点实验室/中-美草地畜牧业可持续发展研究中心,甘肃,兰州,730070;扬州大学动物科学与技术学院,扬州,225009);韩建国,HAN Jian-guo(中国农业大学草地研究所,北京,100094);王小山,WANG Xiao-shan(扬州大学动物科学与技术学院,扬州,225009);武自念,杨云,甘欣,姚喜红,WU Zi-nian,YANG Yun,GAN Xin,YAO Xi-hong(甘肃农业大学,草业学院/草业生态系统教育部重点实验室/中-美草地畜牧业可持续发展研究中心,甘肃,兰州,730070) |
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| 基金项目： | 2007年公益性行业(农业)科研专项资助项目，江苏省高校自然科学研究计划面上项目 |
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| 摘 要： | 研究了不同施氮水平(0、100、200和300 kg/hm2,分别表示为N0、N100、N200和N300)对扬州地区一年生黑麦草产量、分蘖数、株高等生长特性及经济效益的影响.结果表明:施氮量为100,200和300kg/hm2时,黑麦草鲜草总产量分别比不施氮增产75%,146%和134%.当施氮量达到200 kg/h...
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| 关 键 词： | 黑麦草 施肥处理 生长特性 产量 经济效益 |
Effects of different N supply levels on Lolium multiflorum growth and yield |
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| LIU Gao-Jun,HAN Jian-guo,WEI Zhen-wu,WANG Xiao-shan,WU Zi-nian,YANG Yun,GAN Xin,YAO Xi-hong.Effects of different N supply levels on Lolium multiflorum growth and yield[J].Grassland and Turf,2011,31(1):33-36,41. |
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| Authors: | LIU Gao-Jun HAN Jian-guo WEI Zhen-wu WANG Xiao-shan WU Zi-nian YANG Yun GAN Xin YAO Xi-hong |
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| Institution: | LIU Gao-Jun1,2,HAN Jian-guo3,WEI Zhen-wu1,WANG Xiao-shan2,WU Zi-nian1,YANG Yun1,GAN Xin1,YAO Xi-hong1(1.College of Grassland Science,Gansu Agricultural University,Key Laboratory of Grassland Ecosystem,Ministry of Education,Sino-U.S.Centers for Grazing land Ecosystem Sustainability,Lanzhou,Gansu Province 730070,China,2.College of Animal Science & Technique,Yang Zhou University,Yang Zhou,Jiangsu Province 225009,3.Institute of Grassland Science,China Agricultural University,Beijing 100094,China) |
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| Abstract: | The effects of different N supply levels(0,100,200 and 300 kg/hm2)on annual ryegrass growth characters and yield were determined,The results showed that the yield of annual ryegrass increased 75%、146% and 134% compared to No.The yield of annual ryegrass was highest up to 74 504 kg/hm2 after two cuts when nitrogen application rate reached to 200 kg·hm-2.Nitrogen supply had a significant influence on heights,tiller numbers,stem/leaf and green yield/dry-matter of annual ryegrass.Economical benefit analysis showed that the profit was optimum when the nitrogen applied at the rate of 200 kg/hm2,which achieved net profit of 8 981.4 yuan/hm2,the highest net income up to 1 5618.36 yuan/hm2.Net income decreased with increasing of nitrogen application. |
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| Keywords: | Annual Ryegrass nitrogen fertilizer growth of perennial yield economic benefit |
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