I. Cultivation
The coverage period is from early july to early august. Before being impregnated, the seeds are fully dry to increase heat resistance. Potassium permanganate was 6 times more immersed in seed water for 20-30 minutes and washed up for 8 hours. Or a 15-minute boiled water at 55°c, mixed with wooden sticks, then naturally cooled up to 30-25°c for eight hours. Seeds wrapped in one-to-two layers of gauze were recovered for 25-30°c in an environment of 12-24 hours, with one immersion in the middle。
Slender beds are well ploughed, ploughed, 6-8 cm thick. The seedbed is then watered and sowed with sowing. It is then covered with 0. 5 centimetres of thick, trophic soil, covering three to four days with a shaded net, when the seed is released, or when the sun is covered with other shades, so that the seventh and threeths of the sun are covered. It would be preferable to build sheds on sapling beds, with old plastic membranes and shades, with membrane feet lifted at not less than 1. 2 metres, which could serve as shades, cooling, storm-proofing, hail-damaged seedlings, and could effectively prevent the growth of seedlings as a result of heavy wet weather。
Ii. Standing
The acres are exposed to organic fertilizer of 5,000 kg and compound fat of 50 kg. The acre is 2500-3000 seed. A single plant is grown at a distance of 70 cm and 40 cm; a two-line high plant is grown at a distance of 1. 3 m and 40 cm; and a three-line plant is planted at a distance of 40 cm。
Autumn orchids grow at a high temperature, which should take place in the evening and be fully watered. The seedlings are carried out directly from the ground below the seedbed with a single heart, and the planting area is scheduled for 5-6 real leaves。
Iii. Field management
The orchids are less drought- and flood-resistant and require a large amount of moisture during their growth, but the requirements for moisture are more stringent, and planting requires frequent soil retention and moisture。
The pre-growth period of the broccoli, mainly the growing blades, was used to expand the assimilation area and to produce and accumulate nutrients for the reproductive organs. Nitrogen nutrients are to be supplied throughout the period of growth, especially when the lichen leaves are alive and well nourished. Phosphorus and potassium fattening are added to the growth of buds and balls. When it comes to fatting, the leaves are sprayed, and extra-root fats are combined with watered fats. 2-3 times。
Iv. Pest prevention governance
The diseases that afflict the orchids are mainly soft, fungi and black. The precautionary approach to governance is primarily rotational, preventing pest transmission and preventing mechanical damage. Prophylaxis can be used in a timely manner at the early stages of the disease。
The pests are mainly larvae. Artificial catch of vegetable butterflies and larvae is available. Chemical protection is based on highly effective, low-toxic pesticides, mainly permethrin pesticides。
Collection
Timely harvest is an important measure to ensure the quality of broccoli. Early harvests affect yields; too late harvests, flower balls are loose and the surface is dim. The harvest criteria are appropriate when the flower ball is large, the surface is flat and the flower branch of the base is loose. At the time of harvest, there were 5-6 small leaves outside the flower ball to protect it from damage and pollution during transport。
(journalist)
