How to cultivate large seedlings
Scorpio is a native tree species with a long history of cultivation in China, and it is also one of the fine tree species for urban and rural afforestation. Due to the slow growth of Sorghum seedlings and the long cycle of cultivating large seedlings, there is currently a shortage of seedlings in the country. Through the use of nutritious seedlings to grow seedlings and increase the spacing of the seedlings to grow and cultivate the seedlings, the performance is better. The specific technical measures are as follows: First, soaking. In early March, the seeds were placed in warm water at 80°C and stirred while stirring until the water temperature dropped to 40°C. Remove impurities and soak for 2 days to 3 days. When soaking, pay attention to warm water of 30°C twice a day. Second, nutrition seedlings nursery. Choose a pond with a flat topography, well-drained, and sunny leeway, dig 1 to 1.5 meters deep, and 30 to 40 centimeters deep to make a seedbed. Use sandy loam plus 20% of the farmyard fertilizer after being sieved as a nutrient soil. Use cotton to make oysters. Make a bowl with a bowl of water and spread it evenly. Put 2 to 3 seeds per sorghum and sprinkle 1 cm of moist fine soil on it. Cover it with a plastic film and seal it for 4 weeks. Seedlings are unearthed in about 10 days. After the seedlings were unearthed, the bed temperature was controlled below 40°C and the bed surface was kept moist. When seedling height is 15 cm to 20 cm, transplanting in field can be carried out after 3 days to 5 days of seedling cultivation. Third, seedling management. After the seedlings of the Saplings are transplanted and survived, they should be cultivated and weeded in time to ensure soil conservation. When necessary, watering and topdressing 15 kg of urea per acre. The two-year and three-year-old seedlings grow faster. They should apply 50 kg of cake fertilizer per acre in the spring, apply topdressing urea 2 times to 3 times in the summer, and strengthen the control of plant diseases and insect pests.