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不同耕作方式下黑土的渗透特性和优先流特征
引用本文:李文凤,张晓平,梁爱珍,申艳,时秀焕,罗金明,杨学明.不同耕作方式下黑土的渗透特性和优先流特征[J].应用生态学报,2008,19(7):1506-1510.
作者姓名:李文凤  张晓平  梁爱珍  申艳  时秀焕  罗金明  杨学明
作者单位:1. 中国科学院东北地理与农业生态研究所,长春,130012
2. 中国科学院研究生院,北京,100049
3. 加拿大农业与农业食品部温室与加工作物研究中心,安大略,NOR 1G0
基金项目:国家自然科学基金 , 吉林省科技发展计划 , 国家科技支撑计划 , 中国科学院前沿领域研究基金
摘    要:用染料示踪法和双环法相结合,对连续6年的免耕与秋翻中层黑土进行水分入渗与优先流对比研究.结果表明:在整个入渗过程中,免耕土壤的渗透率都大于秋翻土壤,达到稳渗时,免耕土壤的稳渗率是秋翻土壤的1.35倍,累积渗透量是秋翻土壤的1.44倍.从亚甲基蓝溶液的渗透深度来看,免耕土壤的渗透深度(43 cm)明显大于秋翻土壤(27 cm).与秋翻土壤相比,免耕土壤具有更好的孔隙发育和更多的生物孔隙,具有良好的优先流特征,这对水分入渗和水土保持有重要作用.

关 键 词:黑土  免耕  渗透特性  优先流  染料示踪  不同耕作方式  黑土  渗透特性  优先流  特征  patterns  tillage  different  Northeast  China  black  soil  preferential  flow  infiltration  作用  水土保持  生物  孔隙发育  渗透深度  亚甲基蓝溶液  渗透量  免耕土壤
收稿时间:2007-11-27

Characters of infiltration and preferential flow of black soil in Northeast China under different tillage patterns.
LI Wen-feng,ZHANG Xiao-ping,LIANG Ai-zhen,SHEN Yan,SHI Xiu-huan,LUO Jin-ming,YANG Xue-ming.Characters of infiltration and preferential flow of black soil in Northeast China under different tillage patterns.[J].Chinese Journal of Applied Ecology,2008,19(7):1506-1510.
Authors:LI Wen-feng  ZHANG Xiao-ping  LIANG Ai-zhen  SHEN Yan  SHI Xiu-huan  LUO Jin-ming  YANG Xue-ming
Institution:Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China. liwenfeng815@163.com
Abstract:By using dye tracer and double-ring infiltrometer techniques, the characters of infiltration and preferential flow of black soil under no-tillage (NT) and fall moldboard plow (MP) were compared after six years continuous management. The results showed that the infiltration rate was higher under NT than under MP. When the infiltration reached steady, the infiltration rate and accumulative infiltration capacity under NT were 1.35 and 1.44 times as high as those under MP, respectively. The penetration depth of methylene blue reached a depth of 43 cm in NT soil, being 16 cm deeper than that in MP soil. Comparing with MP soil, NT soil had better development of pore structure and more biological pores, and presented better preferential flow character, which were of importance for water infiltration and soil and water conservation.
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