Watermelon seedlings transplanted in a few months, how to transplant watermelon seedlings?
There are a lot of stresses on the transplanting of watermelon seedlings. Many watermelon growers have many misunderstandings in transplanting and planting. When is the watermelon seedling transplanted and planted best? do we need to care something?
Watermelon seedling transplanting precautions
Seedlings are generally started around the Spring Festival, and transplanting and planting began in March, with slight differences in different regions. Robust seedlings have a direct impact on planting survival, flowering fruit setting and yield. However, the temperature is low before and after the Spring Festival, the rainy and snowy weather, and the light is weak, which is unfavorable for the growth of the seedlings.
Do well in insulation measures, such as heating the bulb or electric heating wire, cover the grass mat on the grass shed at night, so that the temperature of the seedbed is not lower than 10 °C; strengthen the humidity control in the shed, uncover the small shed film, and let the nutrient water hold at 65%. Left and right, the relative humidity of the air in the shed is 50%~60%. The seedling age is 25 to 30 days, and it is not good either too early or too late.
Before transplanting the melon seedlings, in order to adapt the seedlings cultivated under the protective facilities to the environment of the field, it is necessary to cool and control the melon seedlings about one week before preparation for planting, that is, refining the seedlings, and cultivating the seedlings to promote the aging of the watermelon seedlings To improve adaptability and resistance. The transplanting of watermelon seedlings should be carried out in the morning with good sunny weather, and the ground temperature should be raised as much as possible to promote the rapid growth of new roots and slow seedlings. If the low temperature weather planting seedlings or continuous low temperature weather after planting seedlings, it is easy to cause watermelon roots or dead seedlings. Generally, at a temperature of 10 cm, it can be colonized when it reaches 15 °C or higher.
The depth of planting of melon seedlings is about 1 cm in the soil buried on the surface of nutrient soil. The soil temperature and poor ventilation are too deep, and it is not easy to moisturize too much. These will affect the development of watermelon roots, resulting in slow growth of watermelon. When the grafted seedlings are planted, the grafting interface should be at least 1~2 cm above the ground. Planting too deep makes the hypocotyl part of watermelon (scea) contact the soil and produce self-generated roots, making grafting meaningless.
One day before planting, the water can be poured once to prevent the watermelon seedlings from dying when the seedlings are mixed. At the same time, the seedbed sprays 79% of methyl thiophanate-wet WP 800 times solution and 40% dimethoate emulsifiable concentrate once to prevent pests and diseases, eliminating the trouble of spraying after transplanting the field.
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