In the greenhouse, tomato seedlings are cultivated. When seedlings grow to 1 leaf and 1 heart, they are divided into seedlings. According to Zhou Xinhu's experience, pay attention to the following three points when separating seedlings: First, pay attention to seedling classification. Because the germination is not neat before sowing, there are differences in the depth of sowing. After sowing, the seeds are far from the heat source, and the size of the grown seedlings is inconsistent. Therefore, the seedlings should be divided into the south side of the greenhouse when the seedlings are divided, and the seedlings should be distributed to the north side of the greenhouse. The seedling hole is located near the heat source, and the middle seedlings are divided into the middle of the greenhouse. The second is that the depth of planting should be emphasized. In order to ensure consistency of seedlings, the seedling planting depth should be adjusted when seedlings are planted. The planting depth should be deeper near the heat source and slightly over the leaf sections; the heat source should be planted shallow to expose the cotyledons; the distance from the heat source should be moderate. The cotyledon segments of the seedlings after transplanting should be level with the ground. Third, do not pinch the stems. Seedling stalks are tender and easily damaged. The correct method of transplanting the seedlings is to gently pinch the cotyledons of the seedlings and put them into the seedlings.
Human Ultrasound Scanner,Color Doppler Machine,Doppler Ultrasound Scanner,Notebook Color Doppler Scanner
Mianyang United Ultrasound Electronics Co., Ltd , https://www.uniultrasonic.com