福建省样点灌区灌溉水有效利用系数测算分析

Calculation and Analysis of the Effective Utilization Coefficient of Irrigation Water in Sample Irrigation Districts in Fujian Province

福建省依据《全国农田灌溉水有效利用系数测算分析技术指导细则》,结合福建省灌区规模、水源类型、工程设施与管理状况等实际,选择了35个大、中、小型样点灌区与21个纯井样点灌区进行灌溉水有效利用系数测算工作。并对比分析样点灌区2008-2020年历年灌溉水有效利用系数,基本准确地反映福建省灌溉用水现状水平。得出灌溉水有效利用系数呈逐年递增趋势,灌区面积与灌溉水有效利用系数成反比的结论。

According to the“Technical Guidance for Calculation and Analysis of Effective Utilization Coefficient of Farmland Irrigation Water”and considering the actual conditions of the irrigation districts such as the scale,water source,engineering facilities and management situations,35 large,medium and small sample irrigation districts and 21 pure well sample irrigation districts in Fujian Province are selected to measure the effective utilization coefficient of irrigation water.Also,the effective utilization coefficients of irrigation water in the sample irrigation districts from 2008 to 2020 are compared.The results can generally reflect the actual irrigation water utilization level of Fujian Province.The effective utilization coefficient of irrigation water is increasing year by year and it is inversely proportional to the area of the irrigation district.