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灌溉需要消耗大量能量。但不同灌溉方法所消耗的能量是不一致的。此值与水源的扬程有关。水源扬程为61米时,地而灌溉、人工移动喷灌、时针式喷灌机喷灌,滴灌四种灌水方法所耗的能量大致相同,均约各每英亩170加仑柴油,相当于630万大卡能量。扬程低于61米时,地面灌溉消耗能量最少。扬程大于61米时,地面灌溉消耗能量大于其它灌溉方法。不同扬程的消耗关系曲线图。这个结果是假设地面见附灌溉效率为40％;人工移动式喷灌输入工作压力为4公斤/厘米~2,效率为70％;时针式喷灌机支管长为400米,工作压力为4公斤/厘米~2,效率为80％;滴灌
Irrigation requires a lot of energy. However, the energy consumed by different irrigation methods is inconsistent. This value is related to the head of the water source. When the head of the water supply is 61 meters, the four kinds of irrigation methods such as manual irrigation, manual sprinkler irrigation and drip irrigation consume roughly the same amount of energy, about 170 gallons of diesel fuel per acre, equivalent to 6.3 million kcal. When the lift is less than 61 meters, surface irrigation consumes the least amount of energy. When the lift is greater than 61 meters, surface irrigation consumes more energy than other irrigation methods. Different head of the relationship between the consumption curve. The results are based on the assumption that the efficiency of the irrigation is 40% on the ground; the input of working pressure is 4 kg / cm ~ 2 and the efficiency is 70%; the hourglass irrigation branch pipe length is 400 meters and the working pressure is 4 kg / cm ~ 2, the efficiency of 80%; drip irrigation