Infiltration irrigation

Infiltration irrigation technology has been used for many years in places with high groundwater levels. It is a method of artificially raising the groundwater level and supplying water to plant roots directly from the bottom.

Percolation irrigation is often used in commercial greenhouse products, such as watering potted plants, and can also fertilize, soak the pots with a water solution containing fertilizer from the bottom for 10 to 20 minutes, and then the water can be recycled. This operation requires high-tech automatic operation, and the equipment is expensive. , but save manpower, water and fertilizers, while maintenance and operation costs are also very low, the principle is the same as underground drip irrigation.

Regulated deficit irrigation

Small ball valve series PP type

During deficit irrigation, reduce irrigation (deficiency) during the non-critical period of crops, in a state of drought stress, reduce transpiration water consumption and delay vegetative growth, and concentrate the limited water supply to the critical period of water demand of crops to meet the formation of reproductive organs and growth requirements. The technology can significantly increase water use efficiency without reducing or even increasing yield

controlled alternate root irrigation

When this technology was originally proposed, on the one hand, part of the root system was placed in the dry soil area (dry area), and the crops were under water stress, and a large amount of abscisic acid was formed in the roots, which was transmitted to the leaves, and the stomatal opening was reduced, reducing transpiration water consumption; On the one hand, make part of the root system in the irrigated area (humid area), and the crop absorbs water from the soil to meet the needs of normal physiological activities. Alternately irrigate dry and wet areas. After alternating stress, the secondary roots increased in a large amount, the water and fertilizer absorption capacity of the root system increased, and the water use efficiency was significantly improved.

In practice, this technology has been changed to alternate ditch irrigation system, alternate irrigation system, etc.

In Gansu Province, the technique of alternately irrigation across furrows for field corn has saved 33.3% of water while maintaining high yields. The effect is remarkable, and the investment does not increase. Therefore, it was listed as a local water-saving technology promotion plan a few years ago. [2]