“滴灌”是滴水灌溉的简称,它是近几年发展起来的一项新的灌溉方法。在现有各种灌溉方法中,它具有用水省、效率高的特点。滴灌的工作原理就是在一定水头压力下,将水或肥料溶液经管道系统输送到田间,然后从“滴头”一滴一滴流出,缓慢地渗入作物吸收根区的局部土壤,并按作物在几天内的耗水量经常补充,保持作物在最适土壤含水量的上下限内生长发育,从而达到省水增产的目的。滴灌设备于1974年由墨西哥引进我国,现国内已能成批生产。大寨、沙石峪和北京等地已有较完善的滴灌系统,各省也开展了规模不等的滴灌试点。我省于1976年开始在射洪县平安公社建设大队试点。今年全省已扩大到十二个地方试点。经我省三年来的试验表明,滴灌有以下优点: Drip irrigation is short for drip irrigation and is a new irrigation method developed in recent years. Among the various existing irrigation methods, it has the characteristics of water saving and high efficiency. Drip irrigation works under certain head pressure, the water or fertilizer solution through the pipeline system to the field, and then from the “drip” drop by drop, slowly penetrate the crop to absorb the root zone of the local soil, and crop by crop in a few days The water consumption within the often added to maintain the crop in the upper and lower limits of soil moisture growth and development, so as to achieve the purpose of saving water and increasing production. Drip irrigation equipment was introduced into Mexico by Mexico in 1974, and now it can be mass-produced domestically. Dazhai, Sha Shiyu and Beijing have better drip irrigation systems, the provinces also launched a pilot scale drip irrigation. In 1976, our province began pilot projects in the construction of Ping’an Commune in Shehong County. This year the province has expanded to twelve local pilot. After three years of experiments in our province, drip irrigation has the following advantages: