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Various high-efficiency water-saving irrigation technologies

(1) Sprinkler irrigation saves 30% of water compared with flood irrigation. It is mainly used for densely planted crops in the field and is suitable for regional control. It has the advantages of increasing yield and improving the utilization rate of cultivated land, but it has high energy consumption and large evaporation loss, requiring large-capacity water sources. , and can only be used under the conditions of no more than 3 winds.
(2) Micro-irrigation Micro-irrigation is an advanced water-saving irrigation technology, which can only provide the required amount of water to the water-requiring parts of crops, changing from "watering the land" to "watering the crops". Micro-irrigation is used in facility agriculture and commercial crops, adapts to all terrains and soils, has water-saving, yield-increasing effects, uniform irrigation, and can save at least 50% of water compared to sprinkler irrigation. Micro-irrigation can easily realize the integration of water and fertilizer. However, micro-irrigation has higher requirements on water quality and daily system maintenance.
(3) Drip irrigation Drip irrigation is the most advanced irrigation technology that has appeared in recent years. In 1998, the United States and Australia began to carry out research and experiment of underground drip irrigation on fruit trees and lawns. In June 2004, Israel started the experiment of underground drip irrigation in cotton fields in Shihezi, Xinjiang. In my country, since 1996, underground drip irrigation has been successfully implemented in Beijing, Tianjin, Jiangsu, and Xinjiang for fast-growing forests, fruit trees, lawns, and urban greening plants. The evaporation of underground drip irrigation is extremely small, which can be completely unaffected by wind, and can implement three-dimensional precise positioning of water and fertilizer irrigation. The utilization rate of water is as high as 0.98, and theoretically, the loss of water is minimal. Facility loss is small, free from ultraviolet radiation, and not easy to age.