ebb and flow

Tidal beds can be divided into ground tidal beds and seedling beds

Tidal seedling bed is a kind of cultivation bed with plastic structure. The bed surface is made of plastic tidal seedling plate, which is also called bottom irrigation cultivation bed. This kind of tidal irrigation moving seedling bed adopts the same column and support as the commercial metal structure cultivation bed, and the bed surface adopts the impervious plastic seedling plate molded. During irrigation, the seedling plate is filled with clear water or nutrient solution. And make it stay for a certain time, so that crops rely on capillary action through the drainage hole at the bottom of the flower pot to absorb water. Then the irrigation water is discharged from the cultivation bed, collected and reused, or discharged directly to the local sewer pipe.

Tidal irrigation is an advanced irrigation method for bottom water supply designed for potted plant nutrient solution cultivation or container seedling raising and soilless cultivation. This method uses the drop principle to realize timing water supply and fertilization. A large number of experimental studies at home and abroad show that the growth of crops using tidal irrigation is obviously better than that of artificial irrigation, which can not only reduce the occurrence of gangrene leaves and crumpled leaves, but also reduce water consumption by 33 and improve water use efficiency by 40. Because tidal irrigation has no shower effect, it can also reduce nitrogen use to 305 and greatly improve nitrogen use efficiency.

Tidal irrigation nutrient liquid recycling equipment system is composed of nutrient liquid circulation system, operation control system, disinfection system and oxygenator. Second, the advantages and disadvantages of tidal irrigation moving seedling bed system:

1. tidal irrigation moving seedling bed is a mature agricultural irrigation technology, which has been widely used in developed countries, which has solved the contradiction between irrigation and oxygen supply, and irrigation basically does not destroy the matrix of "three-phase" composition. It is an efficient and high-energy agricultural technology.

2. there are no weeds under the planting bed to reduce the growth of fungi, because the planting bed is very dry;

3. plant growth rate is faster, the seedling age is 1 day earlier than the traditional seedling raising method, improve the utilization rate of facilities;

4. avoid the plant leaves to produce water film, so that leaves accept more light photosynthesis, promote transpiration pull from the root to absorb more nutrients;

5. can be used at any time, free from variety, specification, time limit.

6. relative humidity is easy to control, keep leaves dry, reduce the use of chemical drugs;

7. water-saving efficient, completely closed system cycle, can achieve 90% utilization;

8. management costs are reduced. Manually operated or assisted by a microcomputer controller, a person can complete irrigation of 0.2'0.5 ha. disc seedlings within 20-30 min;

9. stable water and gas content in the root medium to avoid the capillary root dying from drought near the edge and bottom of the container;

10. The general sprinkler irrigation method results in uneven absorption of fertilizer and water per plant, a decrease in yield, a high yield for tidal irrigation and standardization of production, and a height of each plant

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