一、前言珠江下游三角洲地区包括东、西、北江及其支流绥江、谭江、流溪河、增江等下游和西、北江在三水县思贤?汇合以后及东江自石龙以下所形成的河网区。这一地区大部分是冲积平原,土地肥沃,气候温和,雨量充沛(年平均雨量1600～2300毫米),对发展农业生产极为有利,是我省 First, the forefront of the Pearl River Delta region, including the East, West, North River and its tributaries Suijiang, Tanjiang, Liuxihe, Zengjiang and other downstream and the West and North River in Sanshui County after the merger of Siming and Dongjiang since the Shilong following Formation of the river network area. Most of the area is alluvial plain, fertile land, mild climate, abundant rainfall (average annual rainfall 1600 ~ 2300 mm), the development of agricultural production is extremely beneficial, is our province