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 6th day) then 78% and 79% respectively after 408 hours (the 17th day) because of the furrow waters lateral infiltration after irrigation.The results showed that,under the conditions of this experiment,the water content gradient in the lateral and ridges vertical results in obvious lateral infiltration and water supply to the ridge.And when film-mulched,theres much less evaporation in the ridge,which will achieve the desired effect of reducing the soil waters wastage and increasing its effective utilization.
wide ridge and furrow irrigation film-mulch soil-water movement water content
Bai Qingjun Ma Jinbao Zhang Yanni Xiang Yan
Water Conservancy and Civil Engineering College,Shandong Agricultural University,Taian,271018,China Water Conservancy and Civil Engineering College,Shandong Agricultural University,Taian,271018,China Water Conservancy and Civil Engineering College,Shandong Agricultural University,Taian,271018,China
国际会议
南京
英文
232-236
2006-08-16（万方平台首次上网日期，不代表论文的发表时间）