Mainly caused by chemical fertilizers and water sedimentation. One is that some fertilizers remaining in the drip irrigation pipe after drip fertigation, such as calcium sulfate, will precipitate, which will block the flow channel of the dripper. Second, if the drip irrigation water is hard water and the carbonate content is too high, long-term use will generate more scale on the inner pipe wall of the drip irrigation and block the dripper.
This is the main cause of clogging of drip irrigation pipes. Irrigation water quality is poor, and the filtering system is not perfect. After mud and sand and other debris are pumped into the pipeline and drip irrigation pipe by the pump, when they pass through the jagged flow channel of the built-in dripper, the debris will block the flow channel and make the dripper unable to discharge water.
The root system of the crop invades the drip irrigation pipe outlet hole, or the blockage caused by the growth of algae and other microorganisms in the irrigation water. The water-to-water and unbalanced irrigation of crop roots will cause the roots to grow into the drip-irrigation water outlet and extend into the water outlet and cause blockage.
If the drip irrigation pipe is rich in organisms such as algae in the water, the drip irrigation system often combines fertilization and irrigation, and the fertilizer pool and other light-proof facilities are not in place, which will easily cause a large number of microorganisms to multiply and block the inner wall of the drip irrigation pipe.