At present, it is the critical period of watermelon seedlings. The technical training group of the training city explained the watermelon seedling raising technology to the melon farmers on the problems of watermelon seedlings.
1. Establish a seedbed
1 Select the bed site: The seedbed should be chosen to face the south, leeward, and high land plots. In addition, transportation and irrigation should be convenient for the transport of seedlings.
2 seedbed establishment: seedbed width 1.2-1.3 meters, length 10 meters, arch height 50-60 centimeters, after the selection of a good line, clear the seedbed, and dig 15-20 cm deep bed base, bed soil ready to prepare nutrition Hey.
2. Make nutrition
1 Preparation of nutritious soil: nutrient soil requirements loose, fertile, water, fertilizer, no bacteria, eggs and weed seeds, preferably uncultivated melon ripening soil, the uncultivated melon soil and decomposition of organic fertilizer Through sieving, the soil and fertilizer are counterbalanced by 1:1, and 700 grams of nitrogen, phosphorus and potassium are added per cubic meter. The soil and fertilizer can be mixed evenly to make mash.
2 Nutritional formula: When preparing nutrients, the prepared nutrient soil is first loaded with about 2/3 of the prepared plastic material, and compacted, and then the remaining part is filled. After being packed, it is placed in the seedbed. Seed sowing.
3, soaking, germination, sowing
1 Soaking in germination: After the seeds are picked, they should be soaked in warm water at about 60°C for 5 to 10 minutes, then soaked in water at about 30°C for 8 hours, and germination can be carried out using a thermostat or human body temperature.
2 Seeding: Before sowing, the seedlings shall be sprayed with water for 1 time. After the water is completely infiltrated, add a small hole (about 7 cm in depth) with a small stick and then add the seed into the small hole. Cover 1-2 cm thick fine soil.
4, seedbed management
1 temperature: from sowing to cotyledon birth 25 °C -35 °C is appropriate, the night temperature is maintained at 18 °C -20 °C is appropriate. After most of the seed cotyledons were born, the daytime temperature was 20°C-30°C, and the night temperature was about 15°C. After the true leaves appeared, they were controlled at about 25°C during the day and the night temperature was not lower than 15°C.
2 release the wind: until the seedlings grow to mid-late growth, it is necessary to promptly release the wind. The principle is to start small, gradually put large; high-temperature amplification when the wind, low temperature does not let go, avoid sudden increase in the wind at high temperatures.
3 Water and Fertilizer Management: During the growth period of the melon seedlings, the seedlings can be sprayed with water to increase the temperature. Spraying water can be combined with topdressing, ie 0.1-0.3% urea or potassium dihydrogen phosphate for foliar spray.
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