Before detaining the shed, the dried stems and leaves of weeds and weeds must be removed and planed. After the shed is shed, 25 kg of urea is applied per acre for top dressing, and 10 kg of sesame oil is applied per acre (poured with water). . At the same time, 500ml/mu standard should be injected into the water with a high-efficiency and low-toxicity insecticide such as quinones or chlorpyrifos.
First, the top-dressing leeks have strong fertility and need more ammonia. Organic manure is best for manure, chicken dung, and earthworms. Fertilizer with ammonium sulfate, compound fertilizer is the best. The fertilization method is to store a manure before one squat, before the shed, and after each cultivating or harvesting, chase the organic manure or chemical fertilizer between the rows once.
Second, the appropriate humidity for irrigation of Leek growth is 60 ~ 70%, if the irrigation is too much, not only cause surface hardening, but also easy to cause rot and white tip. The irrigation time should be filled with water once after the shed and 10 days before each harvest. In addition, it should be based on the day when the curtain is revealed, there are no beads on the leaves to determine whether the water. When the curtain is uncovered, there is no water droplets, which proves drought, and it is better to have more irrigation as early as possible. If there is a small amount of small water beads, it will be poured slowly and less; if there is a large amount of water, irrigation should be stopped.
Third, loose soil and cultivate soil not only can promote the growth of leeks, but also can increase the temperature. After each irrigation, loosen the soil with a two-toothed file. Every time you loosen the soil, the depth of the ridges must be the same. The number of ridges is higher than the middle ridge in order to make the leeks grow uniformly in the shed. The quality of leeks depends on the height of the pseudostem and the depth of soil. Narrow sowing footage should be cultivated once in conjunction with loose soil once the seedlings are harvested after harvest.
In addition, pay attention to lighting, temperature and ventilation.
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