About Cultivation Techniques of Sweet Potato Seedlings

Toon seedlings, also known as seedlings of Torreya grandis, seed buds, etc., are seedlings formed from the germination of Toona sinensis as a product. In the past 10 years, sporadic cultivation has begun near major cities in the north of China. This cultivation method can be cultivated indoors at room temperature, and fresh taro seedlings are supplied throughout the year. - The production cost is much lower than picking out the toon buds on the tree, and the production cycle is also short, which is a promising way.
Toona sinensis seedlings are rich in nutrients. According to the determination, each edible portion has a moisture content of 90.5 grams, protein 1.7 grams, fat 0.2 grams, crude fiber 2.3 grams, carbohydrates 3.8 grams, carotene 780 milligrams, thiamine 0.08 milligrams, Riboflavin 0.13 mg, niacin 1.0 mg. Shannon seedlings have a special scent, which can be cold, stir-fried, and pickled. This is a popular vegetable for northern peoples.
(1) Selection of a variety of Toona sinensis varieties for the production of Toona sinensis seedlings. Among them, the seeds of red oil pods and black oil pods are large, full, and have high germination rates, and are the most suitable varieties. The storage time of the seeds of Toona sinensis is shorter, and the germination rate begins to decline after the second half of normal temperature conditions. Therefore, seeds with high purity, freshness, high clarity, no mildew, no pests, and high germination rate should be used.
(2) Before the seeds are soaked and immersed in seeds, put the seeds in their pockets and rub them gently to remove the membranous fins and remove impurities such as stems and leaves. Torreya seeds should be soaked for 24 hours and then removed.
There are two methods for germination: one is to wrap it with gauze and put it on the priming workshop; the second is to use a clean seedling tray, spread the cotton cloth on the tray, put the seeds that have been soaked, and put about 75 grams of dried seeds on each plate. seed. The seeds were covered with cotton cloth and placed in the priming workshop. The seeds of the gauze bag are maintained at a temperature of 20-23°C in the priming workshop, and the seeds are panned once a day, and the seeds are tipped 2-3 times, and the cotton cloth is sprayed to wet the seeds so as to maintain the suitable temperature, humidity and air permeability of the seeds. . After 3-4 days of seed germination 1-2 mm, you can sow.
(3) Seeding and management sowing in seedlings. The substrate in the nursery tray may be perlite, fine soil mixed farmyard fertilizer (1:1), sawdust fine soil (1:1). Seedling trays are soaked with water and sowed. Use 50-70 grams of dried seeds per plate, spread evenly, cover soil 1 cm. After sowing, the seedlings are stacked in a cultivation room and placed on a cultivation stand after emergence. The temperature in the cultivation room is maintained at 20-23°C. There is scattered light of 4000-5000 lux, which is ventilated daily. After emergence, spraying water 3-4 times a day, topdressing 0.1% urea solution once every 2-3 days.
(4) Harvest When the seedlings 2-3 true leaves, 8-10 cm high can be harvested. The excellent scented seedlings are: the buds are thick green, neat, cotyledons flat, full of hypertrophy, the heart leaves are not sticking out, no rotten species, no rotten roots or fallen seedlings occur, and the aroma is rich. The harvest is generally sold on the whole plate or listed after rooting. Typically 400-450 grams per plate, 1 kilogram dried species can produce 14 kilograms. It takes 15-18 days from sowing to harvesting. The product can be kept in the shade for 1 week.

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