When celery is grown in the spring shed, the maximum temperature at noon in general cannot exceed 25°C. After the shed, ventilation was started when the temperature was close to 20°C in the morning, ventilation was stopped when the temperature dropped to 18-15°C in the afternoon, and the minimum temperature in the night was 8-10°C. Every 2-3 days, choose sunny and warm weather to release the air, so as to prevent diseases caused by low temperature and high humidity, and properly water and fertilize according to the growth conditions of celery.
During the cultivation of celery, in order to promote its growth, the gibberellin can be sprayed on the leaf surface, and obvious effects can be seen after 15 days. Spraying gibberellin can be more effective if combined with fertilizer and water management.
Celery leaves can be harvested 50 to 60 days after planting, with a petiole length of 40 cm. In order for the wound to heal quickly, the temporal lobe cannot be immediately watered. After each loquat leaf, the temperature of the greenhouse should be increased by about 5°C to promote wound healing and root regeneration. After 5-7 days, normal temperature should be restored, watering and top dressing should be strengthened, and pesticide should be sprayed.
This 50m distance measuring meter is made of two parts: the laser distance outside unit and the sole part laser measure module. Great distance range is from 3cm to 50 meters with ±1.5mm high accuracy. Digital distance measuring device is quick and reliable measure with one hand pushing the button. It is designed for hand helding, very convenient to put in your jacket pocket or trouser pocket.
1>. Easy to Use. It is very easy to learn how to use a Laser Distance Meter, it can measure distance with pressing a single button.
2>. Safety. Using a laser distance meter to measure is much safer than using a measure tape, for users do not need to climb up and down.
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