Vegetable seedlings are made of advanced facilities, equipment and management techniques, placing different growth stages of seedlings in the optimal environment controlled by humans, giving full play to the potential of seedling growth, and breeding high-quality seedlings quickly and with high quality. A factory breeding method. Any vegetable that can be transplanted and transplanted can be seeded and seeded, and is particularly suitable for vegetable seedlings with weak roots, poor regeneration ability and short seedling age.
The seedlings of seedlings are covered with large and small quadrangular pyramids, so they are also called “plug seedlings”. The seedlings cultivated by plugging seedlings have short seedling age, seedlings are tidy, robust, no pests and diseases, and after planting. Still good for seedlings. The use of the plug tray can be used for centralized seedling raising and unified management. The seedling period is not restricted by the environment, and it can not only raise seedlings in large quantities, but also save labor.
The facilities for plug seedlings mainly include seeding machine, seed pelleting machine, plug tray, seeding room, germination chamber and greening room. Simple tray seedlings can be used as long as there is a tray (equivalent to the nutrition in the general nursery) and insulation and moisturizing facilities. At present, the commonly used plug tray is a porous plastic disc with a length of 55 cm, a width of 28 cm and a height of 5.5 cm. According to the size of the hole, there are 50 holes, 72 holes, 128 holes, etc. Different vegetable types can be selected accordingly. The specifications of the plugs, such as the general leaves, cauliflower vegetables with 128 holes, the solanes with 72 holes.
Strict tray seedling cultivation, its operation process includes several stages such as preparation before sowing, sowing, germination, greening and seedling formation, and the various stages are connected before and after, and different management methods are adopted in different stages. The tomato seedlings are taken as an example to illustrate the operation process of seedlings. The first is preparation before sowing, including tray cleaning, disinfection, seed treatment (seed disinfection and pelletization) and matrix preparation. It then enters the planting plant for precision seeding on a precision seeder, which includes loading (matrix), pressing, seeding, covering and watering. Then enter the germination chamber for germination, and maintain about 28 ° C, humidity 90% or more, about 2 to 3 days after emergence. When about 80% of the seeds are topped out, the plugs are moved into the greening room to allow the seedlings to receive light, and the temperature is controlled at about 25 °C, so that the seedlings can continue to emerge and prevent the lengthening. When the seedlings are out, the seedling period management is carried out, and the temperature of the greening room is controlled at about 25 °C during the day and 15 °C at night, and the substrate is kept moist. The seedlings were incubated 7 to 10 days before transplanting to adapt the seedlings to the field environment.

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