11月22日，环卫人员在松江泖港水域清理水葫芦。受前段时间阴雨后上游水域排涝等原因影响，黄浦江上游泖港等水域出现大量水葫芦。11月22日上海市市容环境卫生水上管理处发布红色预警，当日起环卫工人在松江泖港地区加强打捞作业，每天打捞水葫芦4000余吨。新华社发（张金桥 摄）     On November 22,Sanitation personnel in songjiang Mao port waters cleaning water hyacinth.By some time ago after rain upstream water drainage and other reasons influence,The huangpu river upstream Mao port waters such as appearance of a large number of water hyacinth.On November 22, Shanghai city environmental sanitation water administration issued a red warning,The date sanitation worker in songjiang Mao port areas to strengthen the salvage operations,Every day fishing water hyacinth 4000 tons.The xinhua news agency hair(ZhangJinQiao perturbation)