1. **Fertilizer Seedbed Preparation**: Seedlings were grown in a nursery, and the rapeseed bed was selected as a suitable area for spring corn seedlings. A dry nursery pond was also used as a seedling bed. The ratio of the seedbed to the main field is 1:20, while the ratio of the seedbed to the total farmland area is 1:10 to 15. The size of the seedbed should be at least 7 cm in width. In early spring, it's essential to plow the seedbed soil to expose it fully to sunlight, which helps activate the soil and improve its fertility. Before planting, weeds are manually removed from the seedbeds to ensure better growth and higher productivity. The seedbed must be rich in nutrients, so the first step is to enrich the soil, followed by timely application of balanced fertilizers, and finally, the preparation of nutrient-rich soil using a scientific formula. Based on practical experience, a standard seedbed with a width of 1.5 meters and length of 4.5 meters is prepared before the Spring Festival. To make the soil nutritious, 300 to 400 kg of animal manure, 3 kg of phosphate fertilizer, 1.5 to 2 kg of ammonium bicarbonate, and 0.5 kg of potassium fertilizer are mixed. Additionally, 150 ml of Huimanfeng is added and thoroughly blended to enhance the nutritional value of the seedbed, increase seedling resistance, and improve the overall quality of the corn seedlings.
2. **Seedbed Density and Watering**: After mixing the soil, fertilizer, and Huimanfeng evenly, water is added in an appropriate amount—approximately 4800 to 5000 liters per mu—to ensure sufficient moisture for healthy plant development. This step is crucial to guarantee that enough viable plants are ready for transplanting.
3. **Timely Sowing**: The ideal time for sowing in the seedbed is between March 15th and 20th. Seedlings should be transplanted into the field after 15 to 20 days, when they have 2.5 to 3.5 leaves, typically around early April.
4. **Nurturing Strong Seedlings**: Careful attention is given during the seedling stage. After sowing, water is applied to the seedbeds, and large seeds are planted in small clusters—1 to 2 seeds per spot. The seeds are then covered with 1.5 to 2 cm of moist fine soil. A plastic film is placed over the bed, forming an arch structure, and the edges are tightly sealed to retain heat and promote faster growth. Once the seedlings emerge, the mulch is removed. Watering should be done flexibly, especially when the soil surface becomes dry. During hot midday hours, ventilation is necessary to cool the seedlings. Gradually, the greenhouse film is lifted starting from one leaf and one heart, usually over a period of about three days. One day before transplanting, the seedlings are sprayed with vitality solution to strengthen their resistance and ensure the production of strong, healthy, and resilient corn seedlings.
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