rrigation pumps are usually used to pump water from a decrease to a higher degree from which the water then flows by way of channels to the fields requiring irrigation or to lift it to the required pressure head in order to spray the fields through piping techniques (sprinkling). The heads concerned range from approx. 1 m for normal carry operation to forty m for sprinkling. Ocassionally, heads greater than one hundred m could also be required.
At occasions, irrigation pumps are normally not geared up with variable velocity drives. The move fee can due to this fact be controlled by either switching the pumps on and off, or through the use of a throttling valve in 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 greater than 2,000 years farmers have used irrigation to grow food for the world. However, this does not imply that all irrigation strategies are equally helpful. Knowing what is going to work best in your situation requires information concerning the choices available, including the benefits and drawbacks of each. With that in mind, here’s a take a glance at five issues to suppose about in getting water to your crops:
1. Soil sort. The type of soil in an space can have an result on not solely the type of irrigation methodology used but additionally the irrigation run times. Sandy soils typically require frequent applications of water at a high price to maintain moisture in the root zone. Clay soils has a characteristic of holding moisture longer that sandy soils, even so, this will require frequent functions at a lower price to stop runoff.
2. Land topography. When it comes to land issues, hilly or sloping land is usually a problem. เกวัดแรงดันน้ำ works well if the laterals could be run alongside topographic lines. Often system run instances might must be adjusted to stop runoff. Travelers and center pivot systems are often out of the question on hilly and severely sloping land.
3. Local weather patterns. In this case, sprinklers are less desirable in areas where high winds are common and in arid areas with a low humidity since water losses because of evaporation could be extraordinarily excessive. Drip irrigation works properly for each of the above mentioned situations.
four. Type of crops grown. Sprinkler and drip methods can require high levels of investment. Therefore, it’s better 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 high quality. All drip irrigation systems require some type of filtration. Overhead systems such as sprinklers seldom require filtration. Irrigation water must be tested for water borne pathogens. Depending on the crop grown and irrigation technique used chlorine injection may be required. Other water high quality points that could be of concern embrace ranges of soluble iron and other dissolved minerals.
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