Drip irrigation and fertilization are too easy to block, how to solve it?

The main reason for the clogging of drip irrigation nozzles is impurities in fertilizers, impurities in water and scale. In addition, there may be a problem of insufficient pressure. Therefore, we need to carefully identify the cause of the blockage of the drip irrigation nozzle.

1. Fertilizer impurities. The fertilizers used in drip irrigation are water-soluble fertilizers, which are granular, powdered, and liquid. The most likely to cause clogging of the nozzle is the granular water-soluble fertilizer, including flushing fertilizer. The impurity content in this kind of granular water-soluble fertilizer is relatively high, which can easily cause blockage of drip irrigation nozzles. It is recommended that after dissolving this kind of fertilizer, it is to use cotton cloth or other objects with small pores to filter the impurities in the fertilizer solution to reduce the chance of nozzle clogging. Or use high-quality powder or liquid water-soluble fertilizers, the impurity content of these two water-soluble fertilizers is almost zero.

2. Impurities in water. There are many sources of impurities in water, such as impurities formed by antagonism between ions in fertilizer and ions in water, impurities in water, and impurities formed by scale. Therefore, the impurities in the water need to be treated differently to resolve them.

2.1 Antagonism response. This kind of situation is actually quite common. The water quality in our country is generally hard. To be precise, the content of calcium and magnesium ions in the water body is relatively high. For water-soluble fertilizers, they are basically compound fertilizers containing a variety of nutrients. If such fertilizers are dissolved in hard water with relatively hard water quality, some antagonistic reactions will inevitably occur and some precipitation will form. It may not be affected by a single use, but after multiple uses, these deposits may accumulate in the pipeline and block the nozzle.

2.2 Impurities in water. The farmer friends in our country are relatively rough in agricultural management, especially in terms of water use. Well water, tap water, and ditch water can all be used as water for agricultural irrigation. The first two problems are not big, but the last point is ditch water, which contains a lot of small soil particles, that is, impurities. Drip irrigation with such water will definitely clog the nozzles.

2.3 Scale. As we said earlier, the water quality in our country is generally hard water, and the content of calcium and magnesium ions in the water body is relatively high. If such water remains in the pipeline, it will gradually form some calcium and magnesium precipitates, that is, scale. These scales adhere to the pipe wall, and after the action of the aqueous solution pressurized by the pressure pump, they will block the drip irrigation nozzle after falling off.

Therefore, water impurities are also an important reason for clogging drip irrigation nozzles. There are not many solutions. For example, leave a valve at the end of each drip irrigation pipe. Open the valve every few days to flush the pipe to remove impurities in the pipe. Secondly, it is to settle the dissolved fertilizer with water for a few days and filter it. Use, reduce the content of calcium and magnesium ions in the water, and reduce the possibility of clogging the nozzle.

3. Not enough pressure. The drip irrigation used for growing vegetables generally has many branches. A pressure pump for water delivery can supply so many pipelines at the same time, which may cause insufficient pressure. Therefore, it is recommended that you separate several valves at the output end of the pressure pump, each valve controls several pipelines, and only open one valve at a time to increase the pressure of drip irrigation and reduce the possibility of blockage.