杨艳鲜,方海东,潘志贤,冯光恒,沙毓沧,纪中华,杜波,和寿甲.云南元谋干热河谷区旱坡地不同生态农业模式土壤水分差异性分析[J].干旱地区农业研究,2009,27(2):248~252
云南元谋干热河谷区旱坡地不同生态农业模式土壤水分差异性分析
Variability in soil moisture under four eco-agricultural models on dry slope land in Yuanmou dry-hot valley
  
DOI：10.7606/j.issn.1000-7601.2009.02.47
中文关键词:  生态农业  土壤水分  旱坡地  干热河谷  元谋  云南
英文关键词:eco-agriculture  soil moisture  dry slope land  dry-hot valley  Yuanmou  Yunnan
基金项目:国家“十一五”科技支撑计划项目(2006BAC01A11)； 云南省基金项目(2006D0092M)
作者单位
杨艳鲜 Institute of Tropical Eco-Agricultural Sciences Yunnan Academy of Agricultural Sciences,Yuanmou,Yunnan 651300,China 
方海东 Institute of Tropical Eco-Agricultural Sciences Yunnan Academy of Agricultural Sciences,Yuanmou,Yunnan 651300,China 
潘志贤 Institute of Tropical Eco-Agricultural Sciences Yunnan Academy of Agricultural Sciences,Yuanmou,Yunnan 651300,China 
冯光恒 Institute of Tropical Eco-Agricultural Sciences Yunnan Academy of Agricultural Sciences,Yuanmou,Yunnan 651300,China 
沙毓沧 Institute of Tropical Eco-Agricultural Sciences Yunnan Academy of Agricultural Sciences,Yuanmou,Yunnan 651300,China 
纪中华 Institute of Tropical Eco-Agricultural Sciences Yunnan Academy of Agricultural Sciences,Yuanmou,Yunnan 651300,China 
杜波 Institute of Tropical Eco-Agricultural Sciences Yunnan Academy of Agricultural Sciences,Yuanmou,Yunnan 651300,China 
和寿甲 Institute of Tropical Eco-Agricultural Sciences Yunnan Academy of Agricultural Sciences,Yuanmou,Yunnan 651300,China 
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中文摘要:
      对干热河谷旱坡地Ⅰ(罗望子+木豆),Ⅱ(罗望子+木豆+柱花草),Ⅲ(罗望子+象草),Ⅳ(罗望子+自然草被)等4种复合生态农业模式0~40 cm土层水分进行监测和分析的结果表明:4种模式的土壤含水量主要受自然降水的影响,雨季和旱季差异显著;不同模式对土壤含水量的影响存在差异,其中,模式Ⅱ和模式Ⅳ有较强的保水持水能力;在雨水补给不足时,模式Ⅲ对土壤水分的利用效率最高,模式Ⅳ最低;土壤水分季节波动模式Ⅳ最小,模式Ⅲ波动最剧烈;雨季,4种模式具良好的层间补水能力,旱季,模式Ⅰ和Ⅱ土层间补水能力最强。总体上看,4种模式对干热河谷旱坡地的土壤水分均有一定的保持能力,但模式Ⅱ的保水持水能力最强,综合效益最好,更利于干热河谷旱坡地生态农业的可持续发展。
英文摘要:
      The analysis was made of soil moisture in the 0～40 cm soil profile under four eco-agricultural models on dry slope land in a dry-hot valley.The results showed that soil moisture content was influenced mostly by precipitation, and it had conspicuous difference between rainy and dry seasons.Soil moisture content varied under different modles.Model Ⅱ and Ⅳ had strong water-holding power, while model Ⅲ had the topmost water use efficiency when the precipitation was lack, but model Ⅳ's was the lowest.The seasonal fluctuate on soil moisture of the model Ⅳ was the lowest, but model Ⅲ's was the highest.In rainy season, four models had good water supply ability between soil layers.In dry season, model Ⅱ and Ⅰ had only good water supply ability between soil layers.As the whole, four models had part water-holding power, but model Ⅱ was the best one on synthetical benefit, it will make development on eco-agriculture in the dry-hot valley.
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