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一、引言在农业生产实践的全过程中,由于长时期的连续降雨或短历时暴雨,造成农田积水过深或淹水历时过长,导致农作物减产失收,这种自然灾害通常称之为涝灾。所以,治涝工程是一种除害性质的水利工程。它直接为大农业服务,并以减免农作物因受淹而招致的产量损失为其经济效益。关于治涝工程经济效益的计算,在我国部颁标准《水利经济计算规范》SD139—85中,仅作了较为原则的规定。《规范》正文第42条阐述:“……涝灾损失与暴雨发生
I. INTRODUCTION In the whole process of agricultural production, due to prolonged continuous rainfall or short-term heavy rain, farmland water is too deep or flooded for a long time, which leads to the loss of crops. This kind of natural disaster is usually called Flooding. Therefore, waterlogging control project is a kind of harmless water conservancy project. It served directly for large-scale agriculture and provided economic benefits in reducing the yield loss caused by flooding of crops. Regarding the calculation of the economic benefits of waterlogging control project, only the principle of comparative principle has been made in the standard of “Bubble Economy Calculation Code” SD139-85 of China. Article 42 of the Code states: "... flood damage and heavy rain occur