宝鸡峡灌区地处半干旱地区。主要是引渭河迳流灌溉。由于水源不足,供需矛盾十分突出。特别是在每年夏季作物迫切需水时期,往往也是河源枯水时期,渠首流量常在10立米/秒以下,这段时间洪水又较频繁,六、七、八三个月含砂量大于15%的天数一般为15天,最多达29天。过去受“高含砂量”15%的限制,长期以来小水不够用,大水不敢引。超过15%的含砂量水淤灌,到底对庄稼有没有危害?这是多年来灌溉管理工作中的问题。1974年 Baoji irrigation area is located in semi-arid areas. Mainly cited Yin Wei stream irrigation. Due to lack of water, the contradiction between supply and demand is very prominent. Especially during the annual summer crop urgent water demand period, it is often also during the dry period of Heyuan. The discharge of canals often falls below 10 m / s, and the flood is more frequent during this period. The sand content in the six, seven and eight months is more than 15 The number of days in% is typically 15 days, up to 29 days. In the past by the “high sand content ” 15% limit, a long time small water enough, the flood can not lead. Over 15% of the amount of sand silt irrigation, in the end whether the harm to the crops? This is the irrigation management over the years the problem. 1974