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First, after the graft can not be too hurried to let go. Generally, 4 to 5 days after grafting, the general farmer thinks that the interface is basically healed, and the damper is usually released. However, after grafting, the seedlings were in a high-humidity environment. The transpiration of stems and leaves was weak, and the water absorption in the roots was also relatively small. If the wind was suddenly enlarged and the light was strong, the transpiration of the leaves suddenly increased, and the water absorbed by the roots could not meet the transpiration of the leaves for a time. Needs, the leaves will be wilting. The wilting situation is serious, and the newly joined part of the interface is separated again. Therefore, when the air is released, it usually takes 7 to 8 days after grafting, and the grafting interface is completely healed. When ventilating, it is necessary to pay attention to gradual and orderly progress. At the beginning, the ventilation volume should be small, and then gradually increase again. Do not suddenly exhale.
Second, pay attention to the adjustment of temperature. Strengthen the temperature control, the daytime temperature is maintained at 24 ~ 26 °C, night to 14 ~ 16 °C, day and night temperature difference maintained at about 10 °C. Grafted seedlings first receive scattered light.
Third, slow down the heating rate. In the case of continuous cloudy days, see the wilting of the plant leaves, the speed of the increase in the temperature of the greenhouse should be slowed, and after the leaves of the plants are stretched, we can roll the straw curtain to allow a small amount of light to enter, and so many times, until the leaves of the plant are stretched properly. until.
Vegetable grafting anti-fake seedlings
After being grafted, vegetables are affected by the bad environment and often show the phenomenon of leaf wilting and umbrellas. The vegetable farmers call them "flash sprouts." Prevent "flash seedlings" should pay attention to three points: