Due to the small flow rate of the emitter, water slowly seeps into the soil. Therefore, under drip irrigation conditions, except for the soil moisture immediately below the emitter, which is in a saturated state, all other parts are in an unsaturated state. Soil moisture mainly infiltrates and diffuses through the action of capillary tension. If the irrigation time is well controlled, there is basically no infiltration loss. Moreover, during drip irrigation, the soil surface moisture area is small, effectively reducing evaporation loss, and the water-saving effect is very obvious.
Drip irrigation fertilization technology can evenly distribute fertilizer to the roots of crops while watering, achieving integrated management of water and fertilizer. Its characteristic is that the irrigation flow is small, the required working pressure is low, and the irrigation amount can be accurately controlled to directly transport water and nutrients to the soil near the crop roots, meeting the needs of crop growth and development, and achieving local irrigation.
A simple, practical, durable, and cost-effective self gravity drip irrigation and fertilization system can be selected for hilly and mountainous areas; In flat terrain areas, a pump suction fertilizer system is applied.
Manure can also be used in drip irrigation fertilization system. Manure is drip applied after composting and filtering. After drip application, it can be washed with clean water for more than 15 minutes. The emitter and filter are free of any blockage, and there are no algae, moss and other plants growing at the emitter, which is convenient and labor saving.
There are many kinds of crops that can be irrigated by drip irrigation technology, such as Chinese medicinal materials, grapes, peaches, pears, apples, chestnuts, citrus, litchi, longan, Pitaya and other fruits, tomatoes, cucumbers, eggplants, peppers and other vegetables, which also have a good prospect of application in flowers, nurseries and other occasions. In addition, grain crops such as wheat, corn, potatoes and Cash crop such as tobacco, asparagus can use drip irrigation systems.
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