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Evaluation of the efficiency of irrigation methods on the growth and survival of tree seedlings in an arid climate

Journal of Arid Land 2020年第3期12卷 495-507页

作者： Zahra JAFARI SayedHamid MATINKHAH Mohammad R MOSADDEGHI Mostafa TARKESH Department of Natural Resources Isfahan University of TechnologyIsfahan ***Iran Department of Soil Science Department of AgricultureIsfahan University of TechnologyIsfahan ***Iran

Scarce and scattered precipitation in arid regions is detrimental for newly planted *** is essential to provide required water storage for seedlings in restoration projects in the first year of their *** subsurface irrigation can be much more effective than the surface irrigation because of the regulation of water availability and reduction in water *** studied the effect of surface and subsurface irrigation methods on the growth and survival of four common tree species including heaven tree(Ailanthus altissima(Mill.)Swingle),China berry(Melia azedarach L.),white mulberry(Morus alba L.),and black locust(Robinia pseudoacacia L.)by installing underground clay reservoirs with different permeabilities in Isfahan City,*** amounts of animal manure and wheat straw were mixed with clay fraction and cooked in a pottery kiln at 900°C to produce reservoirs with different *** experimental treatments consisting of irrigation and tree species were considered with a factorial arrangement in a completely randomized design with three replications in 2016 and *** water potential of seedlings,which is indirectly related to drought resistance,was measured by a portable pressure *** results showed that saplings height,basal diameter,number of leaves,chlorophyll content and stomatal conductance were significantly(Psubsurface irrigation with low permeability than in the surface irrigation,but the number of branches of the studied species were not significantly(P>0.05)affected by the irrigation methods and different permeabilities of clay *** clay reservoirs with low and medium permeabilities constantly provide better conditions for plant growth,and water with lower pressure and longer time intervals to the plant roots as compared with the reservoirs with high *** of variance of the data showed that year and interaction between year and permeability of reservoir had si

关键词： subsurface irrigation clay reservoirs permeability restoration arid area

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