Several new water-saving irrigation technology

□ Lvzhihu water-saving irrigation refers to a variety of irrigation technologies and methods adopted to achieve the purpose of saving irrigation water. New water-saving irrigation technology refers to the use of engineering-based measures to improve water utilization, increase crop yield irrigation methods. Currently used irrigation methods are: sprinkler irrigation, drip irrigation, micro-spray and low-pressure pipeline irrigation technology. Sprinkler irrigation: the pressurized water formed by the pump pressure or natural fallout through the pressure pipeline to the field, and then sprayed into the air by the nozzle to form water droplets, evenly sprinkled on the farmland, in order to achieve the purpose of irrigation. This method is similar to rainfall, it has to improve the field microclimate, washing crop foliage, irrigation water uniformity, good quality of irrigation and other characteristics, suitable for irrigating field crops and vegetables, fruit trees and so on. It is not strict on the topography of the soil and other conditions, the water source does not need specialized filtration. Compared with the ground irrigation, sprinkler irrigation can save 30% to 50% of the water, the irrigated crop yield increase of 10% to 30%. Make farmland irrigation from the traditional manual work into mechanized or even automated operations, speeding up the process of agricultural modernization. The disadvantage is that it requires high working pressure, energy consumption; irrigation is limited by wind speed; high project cost; operation and maintenance technology requirements. Drip irrigation: it is through the pipeline system and installed in the end of the pipeline on the irrigator, the pressurized water in small flow, uniform, accurate supplement to the soil near the crop roots, so that the crop root activity area of the soil often maintain the appropriate moisture and nutrients.