Seedlings are seedlings that are directly propagated by seeds. They have the characteristics of strong growth, well-developed root systems, and long life span. It is necessary to cultivate the seedlings of citrons to grasp the following points:
First, seedbed preparation
Choose a flat, well-lit, well-drained sandy loam soil and fertile loam soil for the seedbed. Combined bed, Mushi organic fertilizer 5000 kilograms, the site preparation should be flat, fine, depth is generally more than 25 cm, spread the fertilizer evenly, turning through, breaking the soil, picking up stones, grass roots and so on. The seedbed is made into a low bed or a flat bed in accordance with the nursery topography. The nursery with high groundwater level can be made into a high bed. The seedbed is 1.2 meters wide and the trail is 30 centimeters long. The length of the bed depends on the topography, generally no more than 15 meters.
Second, seed processing
Citron seeds are small, seed coats are hard, and their viability is weak. It is difficult to absorb moisture and it is difficult to germinate on the fly. Neat and seed germination requires sand and germination. There are two commonly used methods: 1 Mix the seeds into clean river sand, mix well, sprinkle water, and put the humidity into groups and let it spread. Put it into wooden boxes, jars, and pots, dig inside the shade of the room or dig in the shade at the outside, layer the wet sand and seeds into layers, and cover the straw mat or crop straw to avoid rain. Sand time is about 60 days. Frequent inspections during sand traps should be avoided. Before sowing in spring, the stored seeds are appropriately warmed and moisturized, and the seeds are germinated, and the seeds can be sown when 90% of the seeds are whitened. 2 Before sowing, soak in warm water of 30°C-40°C for a day and night. After the seeds are sucked enough water, remove them, put them in a pouch, and put them in a warm place. Wash them once in the morning and in the evening with water. Turn them evenly to make them ventilate. When more than 50% of the seeds are white, you can sow them.
Third, sowing methods
In drought-stricken areas in spring, in order to facilitate management, save water, and save labor, sowing can be used. After the rainy season comes, the seedlings can be sowed. Once the seedlings are transplanted, the bed is 2.5-3 meters wide. The ditch is sown with a row spacing of 20 cm. No transplanting is required after emergence, but it takes 1-2 seedlings.
In order to maintain the lyrical state, planting water should be poured on the seedbed before sowing. After the water penetrates the seedbed, the seeds of the sweet pods, which are promptly budded, will be spread evenly on the bed or in the ditch. Then the soil is covered with 2 cm thick and compacted.
IV. Post-broadcast management
After sowing, the surface of the bed is covered with crop straws, which not only keeps warm and moisturizing, but also prevents water showering away the seeds. It is also possible to use a bamboo basket as a support on the mattress and cover it with a plastic film, which can increase the temperature of the floor and also maintain the temperature and humidity of the bed.
V. Seedling management
When the shoots are flushed, the cover is removed and the plastic seedlings are removed when 4-6 leaves grow out of the seedlings. The seedlings are planted at a spacing of 10 cm. After weeding, soil loosening and timely watering, when the rainy season is approaching and the seedling height is 10-15 cm, the seedlings can be raised and transplanted in Daejeon at a spacing of 10 cm and 20 cm.
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