Dry seed sowing method

Shoot stem usually uses seed and rhizome to propagate, the harvest of rhizome propagation is early, the effect is quick, but the reproduction coefficient is low, long-term planting will also lead to germplasm degradation, although the production cycle of seed propagation is long, but the reproduction coefficient is high, it will not lead to germplasm degeneration. therefore, the method of seed propagation is often used in actual production, so let's take a look at it.

Shoot dry seed collection

Usually from late September to early October, when the dried fruit shell turns yellow and is about to crack, the fruit stalk is cut off and placed in an indoor ventilated place to dry before threshing.

Shoot-dried seeds to accelerate germination

Do not expose the dried seeds after harvest, otherwise the hardness of the seed coat will be increased. Because of the post-ripening, the physiological post-ripening can only be completed under the condition of low temperature and humidity, and the seeds sown in spring must be treated at low temperature to germinate. The seeds harvested in autumn should be mixed with 3 times of wet sand and buried outdoors. The size of the pit depends on the amount of seeds, keep it moist, keep it from freezing, and dig out for sowing the next spring. Seeds sowed in autumn should be soaked in 40-50 ℃ warm water for 24 hours, and then sown in the shade.

Shoot dry seed sowing

Shoot-dried seeds can be propagated by direct seeding or seedling transplanting, and the sowing period is different due to open field and plastic film mulching. Let's continue to take a look at the open-field direct seeding of shoot-dried seeds, open-field seedling raising and plastic arch greenhouse warming and raising seedlings.

1. Open-field direct seeding: spring sowing is carried out before and after the Qingming Festival, autumn sowing is from September to October, and ditch sowing is generally used. On the finished border, the furrow spacing is 25cm × 30cm, and the ditch depth is about 5cm. The ditch bottom should be flat and loose. Apply soil and miscellaneous fertilizer in each hole, cover fine soil about 2cm thick, and then sow 5-6 seeds that have been germinated. After sowing, cover soil compaction, appropriate watering, cover grass moisturizing and heat preservation. The seed consumption per mu is 2-3 kg, and the seedlings can emerge about 20 days after sowing.

2. Raising seedlings in open field: spring sowing is carried out in March, autumn sowing is from September to October, the border surface is watered before sowing, and after the water is dried, the horizontal trench is opened according to the row spacing of 20 cm, the depth is 6 cm, and the sowing width is 10 cm. Then, the budding seeds are sown evenly into the ditch, covering the fine soil mixed with soil and fertilizer 5 cm thick, or sowing the prepared seeds into the seedling bed and covering 5 cm 6 cm thick fine fertilizer soil. Cover grass to keep moisture and heat preservation, the amount of seed per mu is 810kg.

3. Increasing temperature and raising seedlings: usually, in order to prolong the growth period in the year of shooting and sowing, a small plastic arch shed can be used to increase temperature and sow seedlings early and emerge early. Raising seedlings in a plastic arch shed can be carried out according to the conventional operation in the first and middle of January. First, the seeds stored in the mixed sand are sown in the seedling bed and covered with a layer of thin soil, warm water is sprayed once every morning and evening, and the seedlings can emerge in about a week, and the management of fertilizer and water can be strengthened after emergence. It can be planted in Daejeon in the middle and late March.