Watermelon seedling cultivation is an important part of watermelon cultivation, and the quality of seedling raising is directly related to the yield and quality of watermelon. Today, I will introduce to you the following methods of watermelon seedling raising.
1. Prepare the seedbed.
The seedling bed is the foundation of watermelon seedlings, and it is necessary to choose a place with flat terrain, good ventilation, sufficient sunlight and convenient transportation to establish the seedling bed. In northern regions, facilities such as greenhouses or greenhouses are usually used for seedling raising. Nursery beds are generally required to be 8 10 meters long and 1 million wideAbout 5 meters;Nutrient soil can be disinfected with carbendazim or oxamyl raw powder and other agentsAn appropriate amount of organic fertilizer and an appropriate amount of compound fertilizer, as well as fertilizers such as superphosphate, can be added to the nutrient soil.
2. Sowing. Once the seedbed is ready, it is time to sow the seeds. Before planting, the seeds need to be treated. Rinse the watermelon seeds with clean water to remove impurities and broken seeds;Soak the seeds in 55 degrees warm water, soak for about 15 minutes, stir constantly, and when the water temperature drops to about 30 degrees, stop stirring and continue soaking for 3-4 hours;Wrap the soaked seeds in a towel or gauze and place them in a warm place for germination, which generally takes 2-3 days to germinateWhen most of the seeds have germinated, it is time to plant seeds. Place the seeds flat on the seedbed and cover with 1 cm thick fine soil;Then cover with a film to keep warm and moisturize.
3. Seedling management.
The temperature and humidity should be controlled before emergence, and the general temperature should be kept at about 25 degrees Celsius and the humidity should be kept at about 80%.
When more than 85% of the seedlings are unearthed, the film covering the soil surface should be removed in time to allow the seedlings to grow freelyDuring the growth of seedlings, it is necessary to weed in time, strengthen water and fertilizer management, and prevent nutrient wasteBefore planting, the seedlings should be refined, so that the seedlings can gradually adapt to the outdoor environment.
Fourth, colonization. When the seedlings reach 3 or 4 true leaves, they are ready for colonization. Before planting, seedlings should be refined, plantar fertilizer should be applied, and fine land preparation should be carried out, and planting should be carried out in the morning on a sunny day after the cold airIt is required that the soil is fertile and well drained, and the root system of the seedlings should be guaranteed to be intact when planting, so as to avoid damage to the root system.