Drip irrigation pipe is the lowest part of the whole drip irrigation system, and it is also the part directly in contact with crops.There are a variety of water-saving irrigation equipment in the market, but the causes of blockage are basically nothing more than a few kinds. The following is an explanation of xiamen huatai irrigation equipment for everyone, including the causes and solutions of blockage of drip irrigation pipe and drip irrigation belt.
1. Physical blockage
Debris physical blockage of drip irrigation pipe.Because our country is humongous, the use of water-saving irrigation system environment is complex, in some poor water quality, filter system and good enough at the same time, it is easier for sundries such as sediment in the water by filtering system into a dry pipe and then into the drip line, eventually card embedded type drip irrigation belt patch of serrated flow, drip irrigation pipe blockage.
Since it is the sundries of the water source then of course to intercept at the water source, in the water pump inlet to increase a few bars of iron fence, fence mesh number from small to large, grading filtration, ranging from 10 to 60, stop suspended mud and sand and sundries.
Or draw water to the reservoir first, after natural precipitation and then further use, pay attention to avoid light treatment, prevent other debris into, but also inhibit algae reproduction.In the next step, according to the state of water quality after precipitation, sand filter, mesh filter and laminated filter can be selected to be installed for filtration treatment. The water quality can be greatly improved after preliminary filtration treatment.
2. Chemical blockage
Chemical sediment blockage in drip irrigation pipe.At present, the most water-saving irrigation system in China generally has integrated transportation of water and fertilizer for distribution. However, some fertilizers are insoluble in water, and the residue in the drip irrigation pipe will produce calcium sulphate-like precipitates, which will block the flow path of the drip head.
Use drip irrigation correctly.Use soluble fertilizer as much as possible and the applicator must be installed in front of the filter.Only when the filtration equipment of drip irrigation system is normal can fertilization be carried out. After fertilization, the system shall be rinsed with water for about 5 minutes to prevent the residual fertilizer precipitation in the pipeline.
3. Biological blockage
Biological blockage of drip irrigation pipe.If the drip irrigation pipe is used, the hydrotaxis of the plant root system and the imbalanced infiltration will cause the plant root system to grow toward the outlet of the drip irrigation pipe, and then extend into the outlet hole to cause blockage.In addition, if the water quality is rich in algae, the light-avoiding measures of the drip irrigation system downward from the fertilizer pool are not in place. In addition, the nutritionalization of the fertilizer can easily cause a large number of microorganisms to multiply, and eventually the inner wall of the drip irrigation pipe can be covered and blocked.
When installing the above-ground drip irrigation pipe, the water outlet hole on the drip irrigation pipe faces upward, which can make a small amount of impurities in the water precipitate at the bottom of the pipe and prevent the root system from invading the drip irrigation hole.Subsurface drip irrigation pipes can kill roots near the outlet by injecting an appropriate concentration of chlorine gas, but at a controlled concentration.For algae biology class use chloric acid, nitric acid, sulfuric acid and other acid clear, the use of PH value control in 5.5-6.0, the same acid concentration should be strictly controlled.Rinse with clean water after finishing.
4. Fouling and blocking of water quality:
The water quality of drip irrigation pipe is blocked by sediment.In northern China, most irrigation water is drawn from rivers, lakes, springs and streams. The water quality contains many soluble calcium and magnesium compounds, which are hard water. Long-term use of drip irrigation pipe will generate more carbonate on the inner wall and block the drip head.
A small flow screen type filter can be installed behind the canopy head valve for secondary filtration, which can greatly improve the safety performance of drip irrigation system against blockage.