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Four common mistakes in drip irrigation: Have you fallen victim?

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2019-07-22

Drip irrigation is the most widely used method of water-saving irrigation. Drip irrigation systems are highly efficient in saving water; however, some problems may occur during their application. This article will specifically explain the problems frequently encountered in the practical application of drip irrigation systems. 1. Selection of incorrect emitters Emitters are generally divided into two types: pressure-compensating and non-pressure-compensating. Although pressure-compensating emitters are more expensive, their effect is better. Firstly, pressure-compensating emitters ensure uniform water output from each emitter, leading to uniform fertilization and irrigation. Secondly, some pressure-compensating emitters can flush out debris that blocks the emitters. Also, some pressure-compensating emitters have large flow channels and generally will not be easily blocked.

Drip irrigation is the most widely used method in water-saving irrigation. It's highly efficient in saving water, but some issues may arise during its application. This article will explain them in detail.Drip irrigationCommon problems encountered in the practical application of the system.

1. Incorrect emitter selection
Emitters are generally divided into two types: pressure-compensating and non-pressure-compensating. Pressure-compensating emitters, while more expensive, offer better results. First, they ensure uniform water distribution from each emitter, leading to uniform fertilization and irrigation. Second, some pressure-compensating emitters can flush out debris that clogs the emitters, and some have large flow passages, preventing clogging.

2. Fertilization not implemented through the drip irrigation system
Simultaneous water and fertilizer application is the greatest advantage of drip irrigation. Plant roots grow towards water and fertilizer; therefore, fertilizer application with irrigation water offers the highest efficiency. However, systems for fertilizer application require equipment to prevent backflow, thus preventing fertilizer from contaminating groundwater and other water sources.

3. Lack of pressure gauges and flow meters
These simple devices can address issues in the drip irrigation system that are difficult to assess visually. Using a pressure gauge to check the pressure at the head, middle, and end of the drip irrigation laterals, and comparing it with the design pressure or historical water pressure, can help identify problems in the drip irrigation system. A flow meter can quickly determine the size of the water flow.

4. Ignoring long-term operating costs
Drip irrigation systems are often used for over 20 years, transporting millions of cubic meters of water and fertilizer; therefore, considering irrigation uniformity, pump station operating costs, and routine maintenance costs is crucial. A well-designed system can reduce later operating costs through superior uniformity or energy efficiency. In addition, some suppliers possess extensive experience and proprietary technologies that can guide users in selecting the correct irrigation system and provide assistance in operating and maintaining it.
 
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