Yueyang Biotechnology
Case
Drip irrigation in vegetable greenhouses
Drip irrigation is an efficient water-saving technology that uses ground irrigation equipment to evenly drip water into crop roots through drip heads. The application of drip irrigation water-saving technology in solar greenhouses can improve the growth environment of crops and achieve the goal of cost savings and efficiency improvement. So what are the benefits of drip irrigation in greenhouses? How to use it better?
1. Save irrigation water
Drip irrigation only moistens the root development zone of crops, with very little drip water, and can circulate limited water in the soil between the soil and the plastic film, reducing inter plant evaporation of crops. Compared with traditional ground irrigation methods, drip irrigation can save more than 30-60% of water.
2. Improve fertilizer utilization efficiency
By utilizing integrated water and fertilizer technology, precise fertilization can be achieved through an irrigation system that delivers water and nutrients directly to crop roots in a timely and appropriate manner. This can effectively reduce the amount of water and fertilizer used, promote nutrient absorption by plant roots, and increase fertilizer utilization efficiency from 30% -40% to 50% -60%. Save 30-50% of fertilizer and reduce production costs compared to conventional fertilization when the yield is equal.
3. Reduce indoor humidity and maintain ground temperature
Adopting greenhouse drip irrigation effectively controls the temperature and humidity inside the greenhouse. The operation mode of drip irrigation is shallow irrigation and frequent irrigation, with a small amount of water each time. Except for the moist roots of crops, other areas are always kept dry and will not form water accumulation on the ground, so it will hardly cause a decrease in ground temperature. The irrigation is uniform, with a uniformity of 80-90%. By covering with plastic film, ground evaporation is reduced, and the relative humidity of indoor air decreases by about 20%.
4. Reduce pests and diseases, and decrease medication usage
The occurrence of diseases in greenhouses is mainly caused by excessive humidity. Drip irrigation can reduce indoor air humidity, greatly reducing humidity related diseases and pests. At the same time, it reduces the use of pesticides for pest control, lowers pesticide residues in fruits, and improves fruit quality.
5. Prevent the spread of soil borne diseases
Drip irrigation only works in locally moist soil, and bacteria in the soil will not spread with water.
6. Activate soil and enhance soil permeability
Flood irrigation can cause soil compaction and poor permeability, leading to root rot or damage, which is not conducive to plant growth. Drip irrigation does not generate runoff, does not damage soil structure, and reduces nutrient leaching into the soil layer below the root distribution area.
7. Save labor and effort, improve efficiency
Adopting drip irrigation for crops facilitates unified management, reduces labor intensity, and the drip irrigation system is easy to operate and can implement automatic control, which can significantly save labor. Drip irrigation is a pipe network water supply method for local irrigation, with no irrigation water between plant rows and fewer weeds, which can reduce weed control time.
8. Convenient management
Drip irrigation only moistens the root zone of crops, keeping the open space between rows dry. Therefore, even while irrigating, other agricultural activities can be carried out, reducing the interaction between irrigation and other crops.
9. Significant increase in production effect
Drip irrigation under plastic film can timely and appropriately supply water and fertilizer to the root zone of crops, regulate the temperature and humidity between plants, improve the microclimate environment for crop growth, and enable crops to maintain vigorous growth for a longer period of time. Therefore, the yield increase effect is significant, generally reaching 30-80%.
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