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喷灌这项先进的灌溉技术在上海郊区已有十多年的发展历史,实践证明,喷灌同传统的地面灌溉比较,它不仅具有省水、增产、保土、保肥、提高土地利用率,减轻劳动强度和节约劳动力等优点,而且它还能够调节田间小气候,防治病虫害,充分满足作物需水量。对于蔬菜,喷灌效益尤其显著。但是喷灌需要消耗很多的能源,特别是在低扬程平原地区(净扬程低于喷灌节能临界扬程),耗能尤为明显。因此,喷灌的节能问题是值得
Sprinkler irrigation This advanced irrigation technology in Shanghai suburbs has more than 10 years of development history, practice has proved that sprinkler irrigation compared with the traditional, it not only has the water, increase production, soil conservation, fertilizer, improve land utilization, reduce Labor intensity and labor-saving advantages, but it also can adjust the field microclimate, pest control, fully meet the crop water requirements. Sprinkling irrigation is especially effective for vegetables. However, sprinkler irrigation consumes a lot of energy, especially in the low-head plain area (net lift is lower than the sprinkler irrigation critical lift), the energy consumption is particularly evident. Therefore, sprinkler irrigation is worth the problem