Briefing Israeli agricultural water-saving irrigation

Briefing Israeli agricultural water-saving irrigation more than 60% of the land of Israel at the arid and semi-arid state of severe water scarcity. However, due to the long-term commitment to the development of water-saving agricultural technology, especially technology, maximize the use of water resources, since its establishment, agricultural production increased 12-fold, while the agricultural water consumption grew by only 3.3 times, Israel advanced irrigation techniques Israel played an important role in agricultural development. One to the Israeli Water Water Management Act, to the territory of all water resources belong to the state, must be designed to meet residents' needs and national development needs. To the National Water Resources Committee is responsible for the management of water resources, including the development of water policy, water quotas allocated to develop water plan and water resources development planning, as well as pollution prevention, waste water development, development of desalination equipment, protection of soil and sewage and so on. Water Resources Commission annually by 70% of the quota allocated to agricultural producers with water, and then according to the total precipitation, allocate the remaining quota. To encourage water conservation, water conservancy committee provides water for agricultural producers in their water consumption accounts for a percentage of the quota to pay fees. Second, the technical profile of agricultural water to agricultural water use technology in the international leading low water-saving agriculture are strong. For example, the use of pressurized irrigation methods, the Israeli water consumption per unit area of ​​land has declined by 50% -70%. Now, Israel's irrigated land have used this method of irrigation. In addition, many field crops are irrigated with treated wastewater through the use of recycled water, not only to save water, and help the environment. Israel used treated wastewater in agricultural production is about 230 million cubic meters, and the number is growing. Israel's Water Resources Commission hopes to achieve by 2010, one-third of agricultural water is treated wastewater targets to reduce potable water use in agricultural production ratio. (A) pressure irrigation technology Israel has extensive experience in the field of irrigation, as the basis for the development of a series of new irrigation techniques, these techniques have now successfully entered the international market. Israeli drip irrigation equipment manufacturers will launch 5-10 new products. Israel produces about 80% of irrigation equipment for export. Israeli irrigation equipment manufacturers can be customized according to customer's special requirements products. As long as customers from overseas to provide the type of field soil and crop data, you can get the water quality requirements for such a water filter selection, to prevent clogging residue accumulation and appropriate fertilizer recommendation, the best irrigation methods, and other customer information needed and a series of professional advice. (Two) Israeli drip irrigation drip irrigation technology is an international leader in low. Its drip irrigation equipment supply one liter per hour -20 liters, the maximum utilization of up to 95% water, very suitable for fine plantation. For example, using soilless low flow drip irrigation sprinklers, fine-planting in a greenhouse often requires large amounts of water, and applications designed for the greenhouse drip irrigation system, use a low-flow nozzle, the water supply is only 200 ml per hour. A unique feature of this method of irrigation water that can be spread uniformly in the medium, reducing the loss of water. 80% of the irrigated land of Israel have used the method of irrigation water and fertilizer, irrigation and fertilization at the same time so that, once completed. Israel developed for waste water drip irrigation head, it can control the flow of water, and can prevent clogging. Production of drip irrigation lines in Israel installed filter cartridge, which is a plastic (9630, -180.00, -1.83%) of the multi-tooth elements, when the water flows through the cartridge, it will produce eddy currents, which can throw away the dust, to prevent the export of a narrow emitter plugging. (Three) Israel buried drip irrigation technology technology sent birth of a new irrigation methods, is to pipe buried in the ground 50 cm deep buried irrigation, irrigation methods that can keep the surface dry, even when irrigation does not affect field operations. In such a buried drip irrigation system using something called Tapu Lan (Tarplan) material, it can block drippers roots growing near, so that the drip irrigation system from being tiny roots penetrate. When the valve off, stop irrigation, drip irrigation system valve opens, so that the pipeline is filled with air, to prevent outside dust is inhaled drip head. Israel has also developed a variety of drip heads, such as pipelines drippers, adjustable and non-adjustable fixed drippers, and pre-cast wall into the drip emitters such as centralized. (Four) spray-type irrigation technology uses this method, allowing each tree has a sprinkler for irrigation alone. Israel has also developed a series is mainly used for orchard and greenhouse irrigation sprayers ancillary products. Use spray-type irrigation water consumption at about 30-300 liters per hour, this irrigation method can make efficient use of water rate of 85%. (Five) distributed irrigation technology spreader mainly for irrigation of field crops designed, because this irrigation method suitable for large regional irrigation requirements. Use of the water distribution efficiency can reach 70% -80% (conventional open irrigation water use efficiency is only about 40%). (Six) Israeli operation of irrigation systems irrigation methods can be all controlled by computer. Computerized real-time control operation to be completed, also perform a series of procedures to complete the monitoring work, and can work long hours, precision, reliability, saving manpower. In the irrigation process, if the system is to record the amount of fertilizer applied with a certain deviation compared to the requirements, the system will automatically shut down irrigation device, the computer system also allows the operator to pre-set program, there are intervals for irrigation. These systems have information that can help collect irrigation sensors, such as humidity sensors buried in the ground, is responsible for collecting information on soil moisture. There is also a sensor that can detect the plant through the stems and fruit diameter variations, to decide on the plant irrigation interval, such sensors and computers directly linked to irrigation when necessary, it will automatically open the irrigation system to operate.