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珠江三角洲地势平坦,水道纵横交错,土地肥沃,水热条件十分优越,是我省商品粮及经济作物的主要生产基地。但由于大部分田面高程较低,在双季稻生长期间常处于外江水位以下,降雨、过量的灌水以及经堤闸渗入的水量均靠水泵抽排出围外,遇到暴雨往往会造成涝渍灾害。如何通过排水量的调查研究进一步改善排灌管理制度,实施科学用水,提高排涝渍能力,促进农业稳产高产是目前农田水利建设上有待解决的重要课题。为此,一九八一年在新会县大鳌公社一河上围进行了一年的排水量观测调查。
The Pearl River Delta is a flat area with criss-crossing waterways. With fertile land and excellent hydrothermal conditions, the Pearl River Delta is the main production base for grain and cash crops in our province. However, because of the low surface elevation of most fields, they often fall below the water level during the double cropping season. Rainfall, excessive irrigation and infiltration of water through the floodgates are all drained by water pumps. Rainstorms often result in waterlogging disaster. How to improve the irrigation and drainage management system through the investigation and study of displacement, and implement scientific water use, improve drainage and waterlogging abilities, and promote stable and high-yield of agriculture are important issues to be solved in the construction of farmland water conservancy. To this end, in 1981 a year in the Wai River commune Xinhui County, a survey of displacement survey.