老渭惠渠(即宝鸡峡南干渠)所经之地绛帐、杨陵、武功、兴平、咸阳,不论大城小镇、渠道附近,历年都建设了不少工厂(包括国营、集体和个体),这些企业涉及造纸、印刷、化工、机械、食品加工、木器家俱及饮料、建材等方面,其中“三废”未经任何处理,便随意排放到引水渠内,造成灌溉水源污染。兴平、咸阳一段比较严重,龙其是在渠道停水或流量很小时,渭惠渠简直成了纳污渠。另外,生活废水污染也较严重,这主要表现在渠道附近的学校、机关单位及城镇居民等将生活污水及生活垃圾随意排放或倾倒刭引水渠中,造成灌溉水源污。染值得注意的是,有些高、中等院校或科研单位所排放的 There are many factories (including state-owned enterprises, collectives and individuals) in the old Weihequ (ie, the South Canal of Baoji Canal) where Jiangzhang, Yangling, Wugong, Xingping and Xianyang passed. These enterprises involved in paper making, printing, chemicals, machinery, food processing, wood furniture and beverages, building materials and other aspects. Among them, the “three wastes” were discharged into the diversion channels without any treatment and resulted in pollution of irrigation water sources. Xingping, Xianyang paragraph is more serious, the dragon is in the water channel or flow is very small, Wei Wei Drainage Channel has become simply contaminated. In addition, the pollution of domestic wastewater is also more serious. This is mainly reflected in schools, government agencies and urban residents near the canal that discharge domestic sewage and domestic waste randomly or dump it into diversion channels to cause pollution of irrigation water sources. It is noteworthy that some high, secondary institutions or research institutes emit