Prevention measures are mainly to improve lighting conditions in the shed as much as possible. When planting, increase the row spacing and reduce shading between the plants; keep the shed membrane clean and prevent the membrane surface from attaching water droplets and dirt; when the external temperature reaches 15°C in the late and mid-tomato period, properly expose some of the shed film. Let the sun shine directly into the shed. According to another test, a polyester aluminum film is used to splice a reflective screen that is 2 meters wide and 3 meters long. It is hung on the upper end of a post in a plastic greenhouse (greenhouse) and hangs down to the ground to add 40% to 43% light to the ground. Temperature increased by 3 °C ~ 4 °C, ground temperature increased by 1.8 °C ~ 2.9 °C, tomato yield increased 41.8% ~ 58.1%, and to improve the quality of the fruit; laying silver gray film or aluminum foil, but also increase the light intensity between plants, the tomato coloring Good, and can prevent premature aging of the lower leaves.
Disposable pressure transducer
Disposable pressure transducer Critical Care
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