一、苦水灌溉在抗旱斗争中的积极作用宁夏气候干旱,水利资源不足.在有限的水源中,尚有一部分水质较差,矿化度大于3克/升,群众习惯上将这类矿化度较高的水称为苦水(表1).南部同心、盐池及固原地区,苦水量约有3～4亿立方米.如何充分利用苦水,发挥其抗旱增产的积极作用,并采取适当措施,防治因苦水灌溉而发生的土壤次生盐化,是一个很迫切的问题.五十年代后期,同心等地群众即用苦水灌田.他们在实践中不断总结经验,苦水灌区产量不断上升.如同心王团公社北大队,旱地小麦每亩产量仅60～80斤,而苦水(矿化度4克/升)灌溉的农田,1976年粮 First, the active role of bitter water irrigation in the fight against drought Ningxia climate arid, inadequate water resources in limited water sources, there are still some poor water quality, salinity greater than 3 g / l, the masses will be used to such salinity The higher water is known as bitter water (Table 1). In southern Concentric, Yanchi and Guyuan areas, the amount of bitter water is about 300 million to 400 million cubic meters. How to make full use of bitter water to exert its positive effect on drought-resistant and yield-increasing and take appropriate measures to prevent The secondary salinization of soils due to bitter-water irrigation is a pressing issue. In the late 1950s, condoms and other people used bitter-water to irrigate fields. They constantly sum up their experiences in practice and their output in bitter-water irrigation areas has been on the rise. North Corps Brigade, dryland wheat yield of only 60 to 80 pounds per mu, and bitter water (salinity 4 g / l) irrigated farmland, grain in 1976