Seedlings of red bean sprouts

The red bean sprout is a new type of vegetable developed in recent years. It is a seedling that grows from the seed of the red skin soybean. It can be used for salad, stir-fry, and soup. The taste is pure and nutritious.
The production method of red bean sprouts is simple. Locally, in ordinary winter-warm plastic greenhouses, pea sprouts can be produced 365 days a year, and no additional heating facilities are required. In the spring and fall, 7-10 days can be grown into 18 cm high seedlings. It takes 15-20 days in winter and 4-5 days in summer. Each kilogram of red bean produces 12 kilograms of bean sprouts. As long as production is rationally arranged according to the production cycle, 667 square meters of greenhouses can produce 1000-1500 kg of red bean sprouts per day. It can produce 400,000 kilograms in the whole year, and the income is more than 20 times that of ordinary vegetables. Red bean sprouts can also be cultivated in three dimensions indoors, with more flexible methods and higher yields. The whole process of the production of red bean seedlings does not use chemical fertilizers, pesticides, and only clean water, so the bean seedlings have no pollution, which is in line with the requirements of modern people for food “health, nutrition, and convenience”.
1, selection and soaking. Select red bean seeds of the same age, with uniform grain size and good maturity, soaked in warm water at 30°C for 30 hours to allow the seeds to absorb enough water. Can not use beans, broken beans, bad beans, or easy to cause "bad bed."
2, whole planting and sowing. The ground was first leveled and compacted, and a square brick was used to enclose a seedbed with a width of 80 cm, a depth of 5 cm, and an unlimited length. Soak the soaked bean seeds evenly on the surface of the pod, density is 4.5 kg soy beans per square meter, and then spray 5 kg per square meter.
3, cover sand and exposed sand. Cover 2-3 cm of fine sand after sowing. After 3 days, the bean seed germinated, and the bean seedling topped the sand layer. At this time, the sand cover should be promptly removed to avoid bending the bean seedlings.
4, seedbed management. The basic requirement for the illumination of red bean seedlings is “strong sunlight, astigmatism, and seedlings”, that is, directing sunlight to the soil surface before exposing sand and raising the ground temperature; releasing shading after uncovering sand, and controlling the growth speed of seedlings with scattered light to prevent aging. . The optimum temperature for the growth of bean seedlings is 25-30°C; it can also grow slowly at 5-6°C. The production of soybean seedlings can not be separated from water. It takes about 250 kilograms of water to produce 100 kilograms of bean sprouts. Especially during seed germination, the soil moisture content should be maintained between 75% and 80%.
5, harvesting and storage. The bean seedlings grow to a height of 20 cm and a thickness of 0.2 cm. The bean pods are slightly green and harvested when they are not yet unfolded. The lower roots are cut off and sorted and packaged. Red bean sprouts are not resistant to storage at room temperature, but can be stored for 15 days at 0°C.

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