More nitrogen and less potassium
Zucchini has the highest demand for nitrogen, phosphorus and potassium, followed by nitrogen and phosphorus. The temperature in spring is high, and if there is too much nitrogen fertilizer, it is easy to cause the zucchini to grow long. Therefore, high-potassium compound fertilizer is the main top dressing in spring.
Protection against high temperature and drought
Zucchini is not tolerant to high temperatures. High temperature and drought will not only reduce yield, but also induce viral diseases. The temperature in spring is high, and if the ventilation and watering are not timely, it is easy to cause high temperature and drought in the shed, causing viral diseases. In addition, when the temperature in the shed is high, the zucchini tends to grow long, causing melons. Therefore, it is necessary to strengthen ventilation in spring and water in time to avoid the formation of high temperature and arid environment in the shed. Under normal circumstances, the temperature in the shed should be controlled at 20 to 24 degrees Celsius during the day and 12 to 14 degrees Celsius at night. Water in time when there is a drought, and plowing the soil in time after watering.
Anti-drop flowers and fruits
Artificially-assisted pollination takes place every morning from 6 to 8 am. Remove the male flower to reveal the stamens and apply a few strokes to the female flower style. For auxin treatment, 20 ~ 25 mg of 2,4-D liquid per liter, or 30 ~ 50 mg of anti-dropping liquid per liter can be sprayed or dipped to the newly blooming female flowers to prevent falling flowers and increase fruit setting .
Too many results
In the heyday of melon, it is necessary to prevent too many fruits from falling. Generally, 2 leaves and 1 melon are suitable for fruit thinning. In the later period, old leaves and diseased leaves should be removed in time to promote ventilation and light transmission and increase yield.
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