Four seasons of onions can be sowed in four seasons, with the highest production in the spring and autumn, which is the species of onions that many growers will choose. It's resilient, it's always green, it's smelly. The early spring and rapid growth features are favoured by many growers. So how do you plant the four seasons of onion seeds? What are the management points?
Annexes
1 spring spring: planting in january, harvest in mid-april, membrane cover for the morning。
2. Summer: replanted late in april to early in june and collected late in may/july. This can be cultivated by sunnets or planted in high-dry crops to supply the “summer” market。
3. Autumn: plantings moved late in august-september and were released from mid-september to november. When the autumn onions move, the temperature is high, so that some rice straw can be distributed between the lines to cool and keep them wet。
Winter: replanted october-november, harvest january-february. Winter temperatures are low, onions are slow to grow, and “falls” are used in production to supply the new year's and spring festival markets。
Ii. Fertilizing the whole area
Soils need to be tanned in depth, with easy drainage and drying. The shifting fields should choose fields that are flat, loose, fertile, draining and easy to water, preferably with soybeans, maize and other vegetables, rather than with onions and garlic。
In the case of plots planted over the years, soil treatment is carried out using a “root rotor” microbacterial agent. High-quality organic fertilizers of 2,000 kg per acre, triple compound fattening of about 50-70 kg, fine ground consolidation, with 1. 5 metres wide, cover the membranes during the winter, increasing the temperature of the ground, so that the harvest can be increased。
Seed planting
It would be preferable to use fresh seeds because they have only a lifetime of about two years. The seeding is immersed in warm water of 55°c for about 20 minutes, then washed with fresh water, and can be sowed after drying. The four-season onions planting season is usually seeded in march-april, or in september-october, with a sprouts suitable for temperature 13-20c. Seeds are spread across the surface of*, covering approximately 1-2 cm, and water is poured out, and they begin to germinate in about two weeks when temperature is right. The growth of small seedlings is slow, and some four to five weeks after the gestation, it is possible to replant them。
Iv. Management elements
1. Plantation
The seedlings are screened before planting, and the strains of disease, disability and weakness are removed. After screening, the roots must be cut and 2-3 centimetres left to stimulate the development of the new roots. Four to six plants are planted at 20 cm and 10 cm, and onions and onions can be properly replanted, lightened, approximately 3-5 cm, followed by timely water distribution。
Field management
The root systems of the onion are shallowly distributed and less absorbent, and are therefore insufferable from strong fat, drought- and flood-resistant water, with a small amount of water and attention paid to water accumulation and removal after the rain, and to the timely combination of water for fattening, usually 5 kg of urea, 15 kg of carbon ammonium or 2 kg of ammonium urea nitrate solution using the "n2d" source, usually from 10 to 14 days and not from 15 days before the harvest。
Following the application of nitrogen fertilizer in the preceding period, attention must be paid to the application of potassium phosphorus fertilizer, which promotes onion production, improves onion resistance and quality, and uses leaf-leaf fat to promote green onions。
These are the main elements of four seasons of seed planting and management of onions, four seasons of onion planting, and prevention of pests and diseases。
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