引洪淤滩是保持水土,兴利除害,综合利用土、水、肥资源,增加农业生产的一项有效措施。据最近在三川河流域的调查,沿川不少大队,都利用洪水淤漫了农田、荒滩、盐碱沼泽地,扩大了耕地面积,改良了土壤,建立了旱涝保收稳产高产农田,并已 Pilots flood silt beach is to maintain soil and water, deforestation, comprehensive utilization of soil, water and fertilizer resources, increase agricultural production is an effective measure. According to the recent survey in the Sanchuan River Basin, many brigades along the river have used floods to disperse farmland, wasteland and saline-alkali wetlands, expanded the area of ​​arable land, improved soil, and established a stable farm with high yield and drought-tolerant fields.