Water-saving irrigation system is to optimally allocate limited irrigation water during the crop growth period to improve the conversion efficiency of irrigation water in water storage in the root layer and the efficiency of the conversion of photosynthetic products into economic yields. When the water source is sufficient, use timely and appropriate water-saving irrigation; when water supply is insufficient, resort to inadequate irrigation, adjusted deficit irrigation, low quota irrigation, etc. to limit the water supply to crops, which generally saves 30% to 40% of water, without significant impact on yield. Developing a water-saving, high-efficiency irrigation system usually does not require much additional investment. It only optimizes time allocationlle of irrigation water according to the laws of growth and development of crops. a water saving management measure with low investment and significant effects.
Water-saving irrigation systems can be divided into water-saving irrigation systems under sufficient water supply conditions and water-saving irrigation systems under water supply conditions insufficient water. Adequate irrigation means that the water supply is sufficient to fully meet the water needs of crops. At this stage, the water-saving irrigation system should be based on the crop water demand pattern, weather conditions, crop growth and development status, soil moisture, etc. . irrigate crops timely and in appropriate quantity, so that the quantity and duration of irrigation can be reasonably allocated to achieves high yields without causing water stress during the growing period, and without causing surface runoff and deep infiltration. to guarantee the highest yield and high humidity productivity. Water-saving irrigation system under conditions of insufficient water supply involves optimally distributing limited water among crops or during the crop growth period under conditions of insufficient water source or quantity limited water supply, ensuring water is used during humidity-sensitive periods. various crops and the reduction of non-water-sensitive crops. At present, what is sought is not the highest unit yield, but the highest total production value of the entire irrigation area.