Now, it is the critical period for overwintering the management of zucchini seedlings. The focus of management during this period is to prevent seedlings from becoming leggy and cultivate strong seedlings. Because the courgette zucchini is cultivated in a solar greenhouse, the outside temperature is still relatively high, and the temperature in the greenhouse is often affected by the external temperature. If the seed bed humidity is relatively high, the seedlings are prone to leggy. Therefore, the seedbed temperature must be adjusted in time to enhance the management of fertilizers and water to prevent leggy seedlings.
First, temperature regulation
After the cotyledons of the seedlings are unfolded, the temperature should be gradually reduced. The temperature should be maintained at 20-25°C during the day and 10-15°C during the night. When the temperature exceeds 25°C during the day, the temperature should be released in time. In the morning, the room temperature should not be lower than 8°C.
From the first full-blown true leaf to 7-10 days before colonization, the indoor temperature should be appropriately increased. It is controlled at 22-28°C during the day to accelerate seedling growth.
In the 7-10 days before planting, the seedlings should be cultivated at low temperature. During the day, the temperature should be controlled at 18-22°C and 8-13°C at night. This will not only increase the stress resistance of seedlings, but also prevent the seedlings from growing too long, and at the same time promote the differentiation of female flowers. For laying a foundation for high yields.
Second, fertilizer and water management
In order to prevent the seedlings from being leggy, they must strictly control the water during the seedling raising and not water when there is no drought. If the bed soil is dry and it really needs watering, it should be sprayed in the morning and should not be flooded. When the first true leaf is unfolded, it can be combined with water spray for foliar dressing. If the seedlings show a phenomenon of leggy, they can be sprayed with 200 times potassium dihydrogen phosphate or auxin, which inhibits their appetite and promotes the robust growth of seedlings. Until the seedlings grow to 3 leaves a heart or 4 leaves, when the seedling height 10-12 cm can be planted. The seedling age is generally 30-40 days.
Best Neck Massager,Shiatsu Neck Massager,Neck Relax Massager,Best Massage For Neck Pain
Shenzhen Jie Zhong Lian Investment Co., Ltd. , https://www.szmeizon.com