一、松花江哈尔滨江段渔业环境概况 松花江有南北两源,南源即吉林境内的第二松花江,北源即嫩江。松花江的全长,以北源计为2 317km,以南源计为1 839km,其上游嫩江干流由北向南流,在肇源县三岔河与第二松花江汇合后形成松花江干流。 60～70年代,松花江水质清新,鱼类品种繁多,名贵鱼类“三花五罗”也属常见;由于近年来,经济的迅猛发展,工业废水的大量排入,使松花江失去了往日的风彩。目前,松花江 First, the Songhua River in Harbin section of the fishing environment Songhua River has two sources of north and south, namely, the southern source of Jilin Songhua River in the second, the source that Nenjiang. The Songhua River has a total length of 2 317 km from the north source and 1 839 km from the south source. The upstream of the Nenjiang River flows from north to south, forming the main Songhua River after the convergence of the Sancha River and the second Songhua River in Zhaoyuan County. From the 1960s to the 1970s, the Songhua River had a fresh water quality and a wide variety of fish species. It is also common for rare fish “Three Flowers Five Loads”; due to the rapid economic development in recent years, a large amount of industrial waste water is discharged, Feng Cai color. At present, the Songhua River