1, which can be cultivated in frame, and the seedling box can also be directly placed on the ground;

2. Nursery boxes are mostly foam plastic boxes with specifications of 56 cm× 40 cm×16 cm;

3. Drill four small holes around the seedling box to drain the excess water in the box;

4. Spray water with a sprayer or a high-pressure watering can to moisturize;

5. Carefully select seeds before sowing and fully dry them;

6. Wash it twice with clean water, and then soak it in warm water of 20 to 30 degrees for 6 to 12 hours;

7. The soaking time should be longer when the temperature is low in winter and shorter in summer;

8. The water consumption is 2-3 times of the seed volume;

9. After the seeds are soaked, gently rub off the mucus on the seed coat, then take it out, drain the water, and spread it evenly in foam plastic boxes with wet newspapers laid in advance, and spread about 500 grams of seeds in each box;

10, after sowing, every six seedling boxes are stacked together, 1 Empty boxes are buckled on it to shade the sun, and placed on a cultivation rack or on the ground to accelerate germination;

1 1. During germination, the temperature is kept at 25 to 30 degrees, and the position should be changed up and down every day 1 time;

12. Management after budding When the black bean sprouts grow to 2 to 3 cm long, in order to avoid rotten seeds and buds, the seedling boxes should be scattered and placed in time.