Seedlings without soilless seedlings do not require soil seedlings, but instead use matrix seedlings to protect the roots. The substrates used are slag, peat, sand, sawdust, rice husk, vermiculite, perlite, etc., and can be used singly or as a mixture of 2 or 3 different types. Spaces can be selected according to different seasons greenhouses or temporary awnings erected. Soilless seedlings facilitate scientific management, and emergence also facilitates long-distance transportation. With the promotion of off-season cultivation and the improvement of farmers' science and technology, the electric wire nursery is increasingly emerging. It is a seedling raising method that uses electric current through wires to convert electric energy into heat and heat. It has the advantages of rapid and stable soil temperature rise and good temperature increase effect. Grafting seedlings connects the buds or branches of plants (sprouts) to the appropriate parts of another plant (rootstock), and the technology that combines them into a new plant is called grafting. Grafting techniques are used to cultivate seedlings called grafting seedlings. The leaves of the grafted seedlings were vegetatively propagated with the leaves of the vegetables. Cuttings of Chinese cabbage, broccoli, cabbage, celery, radish, and rapeseed were cultivated. The rate of seedling formation was as high as 90%. Diseases of the plants after cuttings survived were light, and the genetic traits of the offspring were stable. Plug seedlings are a method of growing seedlings using plastic or paper trays. Put the disinfected nutrient mud into the nursery tray and sow the seedlings. Group culture Seedlings Under aseptic conditions, the isolated vegetable organ tissue cells or protoplasts are cultured on a medium, and the technique for promoting division or inducing seedlings is called a vegetable tissue culture technique. The method of using tissue culture technology to raise seedlings is tissue culture. It has the advantages of rapid propagation and mass production.
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