What is water-saving irrigation?

The water-saving irrigation system is to optimally allocate limited irrigation water during the crop growth period to improve the conversion efficiency of irrigation water to root layer water storage and the conversion efficiency of photosynthetic products to economic yields. When the water source is sufficient, use timely and appropriate water-saving irrigation; when the water supply is insufficient, use inadequate irrigation, adjusted deficit irrigation, low quota irrigation, etc. to limit the water supply to crops, which can generally save 30% to 40% of water. , without significant impact on yield. Developing a water-saving and high-efficiency irrigation system generally does not require a lot of additional investment. It only optimizes the time allocation of irrigation water according to the laws of crop growth and development. It is easy for farmers to master. It is a management water-saving 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 insufficient water supply conditions. Adequate irrigation means that the water supply is sufficient to fully meet the water requirements of crops. At this time, the water-saving irrigation system should be based on the crop water demand pattern, weather, crop growth and development status, soil moisture, etc. to irrigate crops in a timely and appropriate amount. , so that the irrigation amount and irrigation time can be reasonably allocated to obtain high crop yields without causing water stress during the growth period, and without causing surface runoff and deep seepage. It is necessary to ensure the highest yield and high moisture content. productivity. The water-saving irrigation system under the condition of insufficient water supply is to optimally allocate the limited water between crops or during the crop growth period under the condition of insufficient water source or limited water quantity, ensuring water use in the moisture-sensitive periods of various crops and reducing non-water-sensitive crops. At this time, what is sought is not the highest unit yield, but the highest total output value of the entire irrigation area.