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The design of pressurized irrigation system in a greenhouse unit is affected by climatic conditions, cropping season, cropping pattern, type of crop, etc. Our suggestion is to design a pressurized irrigation system inside a greenhouse unit based on the tomato plant cultivation pattern. The pattern of tomato cultivation is 0.45 x 0.45 x 1.20 (the distance between the plants on the row is 0.45 and the distance between the rows is 0.45 and the width of the corridor is 1.20 meters). 5 rows of two are placed in each 8 meter opening. As a result, 10 rows of plants will be placed in each opening. The length of the greenhouse is equal to 47.5 meters, from the sides of the greenhouse, a total of 3 meters is considered as an empty space in order to facilitate the affairs of the greenhouse, etc.
Therefore, the length of the cultivation row is 44.5 meters, the number of plants in each row is equal to 99 plants and in each opening is equal to 990 plants. A water outlet of 2 liters per hour is intended for each plant. As a result, the momentary discharge in the case of the tomato cultivation pattern is equal to:
One liter per second = (4450/45×10×2×2×3600/1)
For each row of plants, two rows of 16 mm type pipes will be used so that, in addition to being able to distribute water for the tomato cultivation pattern, it can also provide water for other cultivation patterns.
Therefore, in order to facilitate the work of the user in using the irrigation system for growing all kinds of vegetables and summer, the irrigation network of the greenhouse units is designed based on the tomato plant, because the momentary discharge in this case is more than the other cases and as a result The diameter of the pipes required inside the greenhouse is larger than other cultivation patterns.
The irrigation system is designed in such a way that two holes will be irrigated every time. In this way, a 1-inch size solenoid valve is intended for both openings, which will be opened by command from the controller installed in the greenhouse, and irrigation will be done, and then the second solenoid valve will operate.
The instantaneous flow required inside a greenhouse is equal to 1 liter per second, independent of the number of openings (in this case, recommended), and the automatic irrigation system inside the greenhouse is designed to supply this amount of water, and the diameter of the pipes inside the greenhouse is designed based on it. to be
Specifications of the sample fittings used in a pumping station of a drip irrigation scheme for greenhouse cultivation
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