rrigation pumps are normally used to pump water from a lower to a higher degree from which the water then flows by way of channels to the fields requiring irrigation or to raise it to the required pressure head so as to spray the fields via piping techniques (sprinkling). The heads concerned range from approx. 1 m for normal raise operation to 40 m for sprinkling. Ocassionally, heads more than a hundred m may be required.
At occasions, irrigation pumps are usually not equipped with variable speed drives. The circulate fee can therefore be managed by both switching the pumps on and off, or by using a throttling valve within the discharge pipe, pre-swirl control (e. g. cooling water pumps), rotational velocity or impeller blade pitch adjustment. Both horizontal and vertical pumps (e. g. tubular casing pump) are used as irrigation pumps.
For more than 2,000 years farmers have used irrigation to develop meals for the world. However, this doesn’t mean that all irrigation strategies are equally useful. Knowing what’ เครื่องมือวัดความดันคือ going to work best in your situation requires data in regards to the choices obtainable, together with the advantages and downsides of every. With that in mind, here is a look at five things to consider in getting water to your crops:
1. Soil type. The type of soil in an area can affect not only the sort of irrigation method used but also the irrigation run occasions. Sandy soils sometimes require frequent functions of water at a excessive rate to maintain moisture in the root zone. Clay soils has a characteristic of holding moisture longer that sandy soils, even so, this may require frequent purposes at a decrease fee to stop runoff.
2. Land topography. When it comes to land issues, hilly or sloping land could be a problem. Drip irrigation works properly if the laterals can be run along topographic lines. Often system run occasions may must be adjusted to forestall runoff. Travelers and heart pivot techniques are often out of the question on hilly and severely sloping land.
3. Local climate patterns. In this case, sprinklers are much less desirable in areas where excessive winds are widespread and in arid areas with a low humidity since water losses because of evaporation could be extraordinarily high. Drip irrigation works nicely for both of the above talked about situations.
four. Type of crops grown. Sprinkler and drip techniques can require excessive levels of investment. Therefore, it’s higher to reserve their use for high-value crops like greens, small fruits and orchard crops quite than making use of them to commodity crops like wheat and soybeans.
5. Water quality. All drip irrigation techniques require some type of filtration. Overhead systems such as sprinklers seldom require filtration. Irrigation water ought to be examined for water borne pathogens. Depending on the crop grown and irrigation method used chlorine injection may be required. Other water quality points that might be of concern include levels of soluble iron and different dissolved minerals.
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