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《Agricultural Research in the Arid Areas》 2006-04
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Investigation on soil water redistribution under drip irrigation condition

LIU Xue-qin,FAN Xing-ke (Institute of Soil and Water Conservation,CAS;Northwest A [WTBZ]& F University,Yangling,Shaanxi 712100)  
The test was carried out on air-dried sandy soil to investigate the course of soil water redistribution under drip irrigation condition.It was discovered that the water content at the spot that was close to the dripping points dropped by 1%~2% suddenly after the course of water redistribution began.Afterwards,the soil water content of this spot reduced along with the time,and it reduced quickly in the earlier period,but slowly in the later period.The water content of the original wetting front edge continued to increase in the earlier period of soil water redistribution,but reduced slowly along with the time in the later period.The movement of soil water redistribution enabled the soil water content in the wetting region to drop to some extent,and the soil water was shifted from high moisture section to low moisture section.Under the experiment condition,the horizontal wetting distance grew up by 6%,and the vertical wetting distance grew up by 9%.The movement of soil water achieved the temporary balance in 24 h after stopping irrigation.Subsequently the change of the soil water content became very small,and the wetting front was kept nearly un-expanded.
【Fund】: 国家“863”节水农业专项课题“节水产品激光快速成型技术研究与开发(2002AA2Z4081)”
【CateGory Index】: S152.7
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【Citations】
Chinese Journal Full-text Database 2 Hits
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 ZHANG He-xi et al (Guizhou Academy of Water Conservancy Sciences, Guiyang, Guizhou 550002);Experimental Study on Soil-water Movement under Subsurface Drip Irrigation[J];Journal of Anhui Agricultural Sciences;2008-08
2 HAN Shu min, TIAN Kui xiang, LIU Xiao jing, LEI Yu ping (Shijiazhuang Institute of Agricultural Modernization, CAS, Shijiazhuang 050021, China);Transport ation of soil water and salt in the process of infiltration and evaporation under drip irrigation[J];Journal of Agricultural University of Hebei;2002-01
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8 ZHANG Zhenhua1, CAI Huanjie2, YANG Runya1, LI Qingzhi1(1.The Geography and Resource Management College of YanTai Normal university,gineering, Northwestern Science and Technical University of Agriculture and Forestry, Yangling 712100, China);The Algebra Testify and Experiment Validation of Effective HemisPhere Model for Point Source Infiltration[J];Journal of Irrigation and Drainage;2004-03
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【Co-references】
Chinese Journal Full-text Database 10 Hits
1 DU Zhao-fang,CAO Jian-fei,YUAN Jin-long,YANG Xu(School of Light-textile Engineering and Art,Anhui Agricultural University,Hefei 230036);Effects of nonwovens film and plastic film on soil ecosystem and peanut′s germination[J];Journal of Anhui Agricultural University;2007-01
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