Model-Based Optimization of Design Parameters of Subsurface Drain in Cotton Field under Mulch Drip Irrigation

In this study, the influence of relevant parameters a subsurface pipe layout on soil water and salt transport in cotton field under mulched drip irrigation is explored. Based measured data changes groundwater level field, DRAINMOD numerical model has been used for simulating dynamics salinized drainage. The results investigation show that can accurately simulate hydrological conditions salt-leaching process study area. average deviation between simulated values depth 2013 2014 was ?1.72 cm 2.43 cm, absolute 3.84 root mean square error 5.14 3.63 correlation coefficient 0.87 0.94, respectively. salinity ?0.68 g/kg ?1.86 g/kg, 1.60 1.99 1.95 2.99 0.82 0.86, respectively, which are all within acceptable range. After validation, to analyze desalination area 27 different modes. projection pursuit classification combined with accelerated genetic algorithm based real-number coding. comprehensive benefits were evaluated using construction cost, rate, relative yield as evaluation indices. C11 (buried 2.1 m, spacing 30 m) optimal pipe. provide theoretical support scientific guidance popularization application discharge technology film arid inland areas northwest China.