First, the cause of vegetable seedlings 1 sub-bed soil temperature is too low, the seedlings can not take root after the seedbed and cause dead seedlings. 2. The soil of the nursery bed is not evenly mixed with the organic fertilizer, causing the roots to die. 3, when the seedlings are raised too many times, not enough time to make the seedlings lose water too much, after the break is not easy to recover and die. 4. The seedlings are not well developed before the seedlings and the root system is less. 5. When the seedlings are too late, the roots are damaged, and the absorptive capacity is weakened. Second, the clever prevention of vegetable dead seedlings 1, to improve soil temperature seedbed to ensure seedling seedlings after the temperature requirements. Seed bed soil temperature such as cucumber and eggplant is not lower than 16°C, cabbage seed bed soil temperature is not lower than 8°C. 2, the use of organic fertilizer seedbed soil must be fully fermented maturity, and carefully mixed with the bed soil. When the seedlings are divided, the bed soil shall be compacted and leveled, then ditched, placed in seedlings, and watered, and the soil shall be sealed after the water infiltration. Then move into the nutrient pods. 3, when the seedlings do not hurt too much root, and more with some of the soil, with the points, do not raise too much time. Remove the seedlings with a damp cloth to prevent excessive water loss. In the process of raising seedlings, we also need to pick out seedlings with few roots, broken leaves, sickness and deformity. 4. It is not advisable to divide the seedlings into small ones to improve the survival rate. Usually the first time the seedlings were divided, when the seedlings of the eggplant were in two leaves, the seedlings of the cabbage were in one leaf and the seedlings of the cucumber were before the cotyledon was unfolded. 5, sub-seedlings should be selected to be sunny, such as high temperature greenhouse light intensity, can be placed above a certain distance above the greenhouse shade grass, in order to prevent direct sunlight just finished the seedlings.
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