Production of black bean sprouts with foam plastic boxes, simple cultivation facilities, and the production of spear products without pollution, welcomed by consumers.
The production site cultivation site can be either a greenhouse or an idle house or balcony. As long as it can meet the temperature, humidity, light requirements of the growth of sprouts, and there are sufficient and clean water sources.
Production facilities In order to use the space effectively, it is possible to use shelf-type cultivation, and the seedling box can also be placed directly on the ground. Miao box more foam plastic boxes, specifications for the 56 cm 40 cm 16 cm. Four holes are drilled around the seedling box to drain the excess moisture from the box. Waste newspapers are generally used as a cultivation medium. Large-scale cultivation should also be installed micro-spray facilities, small-scale production of more use sprayer or high-pressure small watering can spray moisturizing.
Diffuse seed before sowing, and fully dry. Wash twice with clean water and then soak in warm water from 25°C to 30°C for 6 to 12 hours. Soaking time should be longer in winter when the temperature is low, and shorter in summer. The amount of water is 2 to 3 times the seed volume.
After germination soaking, gently wash off the mucus on the seed coat, then remove and drain the water, spread evenly into the foamed plastic box that has been covered with moist newspapers, and spread about 500 grams of dry seeds per box. After sowing, each of the 6 seedling boxes is tied together, and an empty box is shaded at the top and placed on the cultivation shelf or on the ground to germinate. During the germination process, the temperature is maintained at 20 °C to 30 °C, and the position should be changed up and down once a day. At the same time, spray moisture, water spray should not be too large, no water in the box is appropriate. Spray water 2 to 3 times a day, keeping a certain distance between each seedling box.
Management after budding When the black bean sprouts grow to 2 to 3 cm in length, the seedling boxes should be scattered and placed in order to avoid bad seeds and bad shoots.
(1) Lighting management. Black bean sprouts are not very strict with the light requirements. In order to make the black bean sprouts smoothly transition from the dark, high temperature, and high humidity germination conditions to the cultivation environment, the seedling box should be placed in the air temperature and humidity is relatively stable before moving into the production cultivation room. Adapt to low-light conditions for 1 day, and then let sprouts grow under scattered light, do not let direct sunlight, so as to avoid premature emergence of fiber sprouts and quality.
(2) Temperature and ventilation management. The germination stage requires a temperature of 25°C to 28°C, and the temperature after the cartridge is 18°C ​​to 25°C. Heating and insulation measures should be taken in winter booths. In the hot summer season, shade nets should be installed to increase the amount of ventilation so as to keep the air in the cultivated environment fresh and reduce rotten seedlings.
(3) humidity management. Spray 2 to 3 times a day, the amount of water should not be too large, in order to wet the substrate in the seedling box rather than water. The floor of the shed is also sprayed with moisture, and the relative humidity of the indoor air is maintained at about 85%. When the weather is cloudy, snow, and rain, it is necessary to spray less water. In sunny days, it is necessary to spray more when there is a drought.
Reasonable disease prevention Black bean sprouts rarely cause disease, but germinating seeds are susceptible to mildew and rotten. In order to ensure that the product meets the green pollution-free food standard, the seedling box and other utensils shall be strictly cleaned during the production process. Potassium permanganate solution having a concentration of 0.1% may be sprayed on the seedling box and the greenhouse. Found that rotten seedlings should be removed as soon as possible.
6 to 15 days after sowing, timely harvesting, until the cotyledons fully expanded, embryo axis length 12 to 15 cm can be harvested or sold with boxes.
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