Seedling cultivation is the key link in the cultivation of melons in the facility. The quality of seedlings is directly related to future growth.
Formulated nutrient soil: It is made into nutritious soil with large field soil, fully decomposed organic fertilizer, a small amount of chemical fertilizer and fungicide. There is no vegetable or cotton planted in the Daejeon soil, especially if the herbicide has not been used. The field soil accounts for 60% to 70% and is then sieved. Organic fertilizer accounts for 30% to 40%, and must be fully decomposed before it can be used. Also screen before preparation. In order to improve the fertility of nutrient soil, ternary compound fertilizer should be added in an amount of 2 kg per cubic meter of nutrient soil. Each cubic meter of nutrient soil should also be mixed with carbendazim or other insecticides and fungicides for soil disinfection and killing. insect.
Decoration: Put the nutrient soil into the nutrient bowl, be careful not to fill it up, it should be 2 to 3 cm away from the nutrient bowl, so that it can store a certain amount of water in the future when watering. After the decoration, the nutrition is placed neatly in the seedbed.
Seed treatment: Pour the seeds into water at 55 °C, keep stirring, keep this temperature for 10 minutes, soak seeds at 33 °C, start germination for about 6 hours, and wrap them in a hand towel. Pick out the sprouts, continue sprouting without germination, and most of them can be sown the next day. Pay attention to the weather changes when germination, require 3 to 5 days of good weather, continuous cloudy days, do not plant the Linfen
Sowing: In order to ensure sufficient water during the nursery period, reduce the amount of watering during the growth of the seedlings, and water the water before planting. Pay attention to the ground temperature, it must be above 15 °C to sow.
In order to prevent seedling diseases such as squatting disease and blight, seedlings of carbendazim WP 3000 times before spraying, spraying about 1 kg per 10 square meters, and then spraying immediately after spraying.
Place one seed in each nutrient bowl, place the seed buds down or flat, and spread evenly 2 cm of moist soil on the seeds. The plastic arch shed is built on the seedbed, and the seedling bed is covered with mulch, so that the soil temperature after sowing reaches 25 °C ~ 30 °C. During the daylighting period, the temperature does not exceed 35 °C during the daytime, the soil temperature is maintained at 25 °C ~ 32 °C, the nighttime is maintained at 17 °C ~ 22 °C, and the lowest in the morning is not lower than 12 °C. The geothermal line can be used to increase the temperature when the temperature is not reached. Higher temperatures promote early emergence and emergence.
Before the first true leaf is unfolded, it should be ventilated so that the temperature does not exceed 28 °C to prevent the formation of tall seedlings. One week before planting, the seedlings should be seen with light to cultivate strong seedlings and promote flower bud differentiation. Starting from 5 to 7 days before planting, the small arch shed of the seedbed should be removed, and the ventilation volume should be increased, the ventilation time should be extended, and the low temperature refining should be carried out. And pay attention to not watering at this time, so that the seedlings can be slowed down after planting.
When planting, the seedlings should have 4 to 5 true leaves, the leaves are flat, light green, with more lateral roots, and the plant height is about 15 cm. The whole plant has no pests and diseases.
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