珠江是我国南方的大河。流域跨范围越云南、贵州、广西、广东、湖南、江西等6省、区,面积45.2万平方公里。年径流总量仅次于长江,居全国第二位。珠江流域地处亚热带,气候温和,雨量充沛,土地肥沃,矿藏丰富,开发条件十分优越。下游的珠江三角洲,中游的郁江、黔江和浔江平原,上游的南盘江坝子区和湖泊区,是广东、 Pearl River is the river in southern China. Watershed across the range of Yunnan, Guizhou, Guangxi, Guangdong, Hunan, Jiangxi and other 6 provinces and autonomous regions, an area of ​​452000 square kilometers. The total annual runoff is second only to the Yangtze River, ranking second in the country. The Pearl River Basin is located in the subtropical, mild climate, abundant rainfall, fertile land, rich mineral resources, the development of very favorable conditions. Downstream of the Pearl River Delta, the middle reaches of the Yujiang, Qianjiang and Qijiang Plain, the upper reaches of Nanpanjiang Bazi and Lake District, Guangdong,