Research on soil-water movement characteristics of film-mulched wide ridge and furrow irrigation

In order to observe the water redistribution between ridge and furrow before and after irrigation, in this experiment we simulated the condition of film-mulched wide ridge and furrow irrigation and irrigation plan, and used neutron probes to observe water content. The results showed that on the surface layer of two observation points in ridge section, each water content accounts for 65% and 66% of field capacity respectively before irrigation, 73% and 80% respectively after 144 hours (the 6(th) day) then 78% and 79% respectively after 408 hours (the 17(th) day) because of the furrow water's lateral infiltration after irrigation. The results showed that, under the conditions of this experiment, the water content gradient in the lateral and ridge's vertical results in obvious lateral infiltration and water supply to the ridge. And when film-mulched, there's much less evaporation in the ridge, which will achieve the desired effect of reducing the soil water's wastage and increasing its effective utilization.