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Drip Irrigation Technology for Greenhouse Vegetables

Release Date:

2019-08-29

Generally, we use greenhouses to grow vegetables in order to accelerate their maturation and market entry, thereby fetching higher prices; at the same time, greenhouse cultivation broadens both the planting season and the geographical range for vegetable production. By employing drip irrigation—installing a complete drip-irrigation system within the greenhouse, including fertilization units and filtration devices—we can deliver water directly to the crop roots. Compared with traditional surface irrigation, drip irrigation enables earlier vegetable maturity. In addition, drip irrigation offers several other key advantages: (1) As a form of localized irrigation, drip irrigation reduces air humidity inside the greenhouse, thereby decreasing the incidence of diseases and pests; (2) Drip irrigation moistens only the soil immediately surrounding the crop roots, improving soil structure…

Generally, we use greenhouses to grow vegetables in order to accelerate their maturation and market entry, thereby fetching higher prices; at the same time, greenhouse cultivation broadens both the planting season and the geographical scope for vegetable production. By employing drip irrigation—installing a complete drip-irrigation system within the greenhouse, including fertilization units and filtration devices—we can deliver water and nutrients directly to the crops in a controlled, localized manner. Compared with traditional surface irrigation, drip irrigation enables earlier vegetable maturity. In addition, drip irrigation offers several other significant advantages:
(1) Drip irrigation is a localized irrigation technique that can reduce air humidity inside greenhouses, thereby decreasing the incidence of diseases and pests.
(2) Drip irrigation moistens only the soil immediately surrounding the crop roots, improving the soil’s physicochemical properties, enhancing soil aeration and permeability, preventing soil compaction, and thereby promoting vegetable growth.
(3) Rational application of drip irrigation can prevent nutrient loss due to deep percolation, thereby significantly promoting root development and nutrient uptake in crops.
(4) When drip irrigation is employed, soil temperature fluctuates only slightly and rises rapidly. This is because water flows slowly through the low-pressure main, lateral, and capillary pipes before reaching the soil near the crop roots; the small irrigation volume prevents substantial changes in soil temperature, which is more conducive to crop growth and helps vegetables mature and enter the market earlier.
(5) Accelerating the transformation and decomposition of nutrients. Drip irrigation can improve soil temperature and physicochemical properties, creating favorable conditions for microbial activity in the soil and thereby promoting the decomposition of organic matter.
(6) Conserve water resources and improve water-use efficiency. Drip irrigation Technical irrigation delivers water through low-pressure pipelines, which significantly reduces seepage and evaporation losses along the conveyance system compared with furrow irrigation. It also minimizes leaching losses of water and fertilizers and helps prevent contamination of groundwater resources.

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