| 宁夏海原地区苜蓿产量与土壤水分的动态变化规律研究 |
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| 引用本文： | 谢静,关文彬,王美,王棒. 宁夏海原地区苜蓿产量与土壤水分的动态变化规律研究[J]. 水土保持研究, 2008, 0(6) |
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| 作者姓名： | 谢静 关文彬 王美 王棒 |
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| 作者单位： | 北京林业大学自然保护区学院;沈阳农业大学林学院;北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室; |
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| 基金项目： | 民政部救灾救济司“宁夏海原国家防灾减灾生态安全预案研究与示范” |
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| 摘 要： | 连续3 a对宁夏海原地区苜蓿产量及土壤水分的动态变化进行研究。结果表明:(1)在0-100 cm深度内,平地苜蓿地土壤水分含量随土层的加深先减小后增大,在40-60 cm层次数值最小,苜蓿产量的高峰期是第6年。(2)坡地苜蓿产量和土壤水分随海拔的增加而减小,北坡产量和土壤水分高于南坡。(3)土壤水分平均值的比较结果是:苜蓿>马铃薯>小麦>胡麻>豌豆。
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| 关 键 词： | 苜蓿 土壤水分 产量 动态变化 |
Study on Dynamic Change of Alfalfa Yields and Soil Moisture of Haiyuan County in Ningxia Hui Autonomous Region |
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| XIE Jing,GUAN Wen-bin,WANG Mei,WANG Bang. Study on Dynamic Change of Alfalfa Yields and Soil Moisture of Haiyuan County in Ningxia Hui Autonomous Region[J]. Research of Soil and Water Conservation, 2008, 0(6) |
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| Authors: | XIE Jing GUAN Wen-bin WANG Mei WANG Bang |
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| Affiliation: | XIE Jing1,GUAN Wen-bin1,WANG Mei2,WANG Bang3(1.Nature Reserve College of Beijing Forestry University,Beijing 100083,China,2.Forestry College of Shenyang Agricultural University,Shenyang 110161,3.Key Lab.of Soil & Water Conservation , Desertification Combating,Ministry of Education,College of Soil , Water Conservation,Beijing Forestry University,China) |
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| Abstract: | The alfalfa yields and soil moisture dynamic change of Haiyuan county were investigated over a period of 2002-2004.The results show that :(1)In 0-100 cm,soil moisture declines in 0-60 cm,then increases in 60-80 cm in flat plots;and the most flourishing of alfalfa yields is at the sixth year.(2) In sloping field,the alfalfa yields and soil moisture decrease with altitude increasing,and their values are bigger in the north slope than in south slope.(3)The results show that in line with the mean soil moisture,... |
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| Keywords: | alfalfa soil moisture yields dynamic change |
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