| Study on effects of different dripper discharge on wetting soil characteristic of drip irrigation |
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| DOI：10.7606/j.issn.1000-7601.2010.04.06 |
| Key Words: drip irrigation characteristic value of wetted volume dripper discharge irrigation amount |
| Author Name | Affiliation | | ZHAO Yingna | Northwest A & F University,Yangling,Shaanxi 712100 | | WANG Youke | Northwest A & F University,Yangling,Shaanxi 712100
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources,Yangling, Shaanxi 712100,China | | MA Lihui | Northwest A & F University,Yangling,Shaanxi 712100
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources,Yangling, Shaanxi 712100,China | | LI Penghong | Northwest A & F University,Yangling,Shaanxi 712100 | | DUAN Xuesong | Northwest A & F University,Yangling,Shaanxi 712100 | | ZHANG Lujun | Northwest A & F University,Yangling,Shaanxi 712100 |
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| Abstract: |
| The experiment was conducted to investigate the effect of different dripper discharge and irrigation amount
on the characteristic value of soil wetted volume and the course of soil water distribution with drip irigation in Jujube
demonstration base of mountain micro-irrigation in Mizhi. The results show that horizontal and vertical advance distance of soil wetted front conforms to power function of infiltration time for point source drip irrigation and calculated value is all above 0. 99; the soil wetted volume and the distribution of soil water content in wetted soil controlled by dripper discharge and irrigation amount. The soil wetted volume reduced and average moisture content increase with dripper discharge in-crease under same irrigation amount . Some models were presented to predict horizontal and vertical wetting front and volume of wetted soil. |
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