Effect of Subsurface Drainage on Soil-Tomato System and Its Comprehensive Benefit Evaluation
YAN Yu-min
LI Kai
Abstract：To explore the best arrangement scheme of subsurface drainage pipes,different drainage treatments were designed(CK:no drainage pipes;T1:0.6 m depth and 4 m space;T2:0.8 m depth and 4 m space;T3:0.6 m depth and 6 m space;T4:0.8 m depth and 6 m space),and the effects of subsurface drainage systems on soil chemical properties,tomato quality and yield were studied;meanwhile,the proj ection pursuit model was introduced to evaluate the comprehensive benefits of different treatments.The results showed that subsurface drainage had significant effects on soil quality,the surface soil EC,organic matter and available nutrients content presented a decline trend,especially T1 treatment;tomato yields of T2 and T3 treatment were higher,and there was no difference between them,the yields were 142.58 t/ha and 137.99 t/ha,respectively;tomato comprehensive quality of T4 treatment was best,T2 treatment was the poorest,and there was no significant difference between T1 and T3 treatment;comprehensive benefit of T3 treatment was the highest,projection value of which reached 1.747 5,followed by T4 treatment,and T2 treat-ment was the poorest with projection value of 0.251 8.Therefore,0.6 m depth combined with 6 m space could be recommended as the optimal arrangement scheme of subsurface drainage pipes.
Keywords：subsurface drainagesoilchemical propertytomatoyieldqualityproj ection pursuit
Publication Date：2014-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 49-52 )