Seed treatment method of Gleditsia sinensis introduction to the planting method of Zaojiao seed

The seed ripening period of Zaojiao is in October. After the fruit is ripe, it does not fall naturally on the persistent branch, but it is easy to be eaten by insects, so it should be picked in time. It can be picked by hand or picked with a hook knife, and the collected fruit can be dried and threshed by the sun under natural conditions. The following is to introduce how to plant Zaojiao seeds.

First, how to plant Zaojiao seeds

1. Seed shape: pod strip, flat, not curved, 15-30 cm long, 2-3.5 m wide, surface black-purple to dark brown, bright, inconspicuous transverse cracks, seeds mostly long oval, brown, glossy, surface with fine transverse cracks, seed coat leathery, hard and difficult to peel off. A thousand grains weigh about 497 grams.

two。 Seed retention and seed cultivation: when the pods are dark purple in May and October, the pods with strong growth, many spines and large and full pods are selected. The fresh pods are soft and can be stripped with scissors. After the pods are dry, the texture becomes hard and not easy to peel off. The pods should be crushed and screened. Store in a dry place. The seeds still have high vigor after stored for 5 years.

3. Seed propagation method: the hard seed coat of Gleditsia sinensis seed is impervious, it is difficult to absorb water, it is difficult to germinate, and the germination rate is very low. In production, the seed should be treated with concentrated sulfuric acid, or the seed coat should be damaged (abraded) by mechanical method, which can greatly improve the germination rate. Spring sowing is generally carried out, soaking the treated seeds in water one month before sowing, changing water every 5-7 days, so that the seed coat is fully absorbed and softened, and the seed coat is sown and raised after cracks in the seed coat. Sow on the whole seedbed according to the row spacing of 20m / m, cover the soil with 3m / m, sow 10m / m ~ 2 seeds, keep the soil moist frequently, and transplant it before sprouting in early spring after seedling emergence for 1 year or 2 years.

2. Seed treatment of Gleditsia sinensis

The seed bark of Gleditsia sinensis is thick, and its germination is slow and irregular. Budding treatment should be carried out before sowing. Paramjeel thought that the germination rate of Gleditsia sinensis seeds treated with concentrated sulfuric acid solution for 15 h would increase. The seeds of Gleditsia sinensis were treated with 20 methods in Mississippi and other places in the United States. it was considered that soaking in hot water or alternating hot / cold water could treat a large number of seeds, but the seed germination rate was low. the best effect can be obtained by using side or end scratches and heating needles to cut a hole (burn) in the seed coat. It is also reported that the treatment of seeds and panicles with wavelength 632.8mm power 25mw laser can increase the seed germination rate and rooting rate of panicles in different degrees. In addition, when soaked in 1:4-5% water for 48 hours and then soaked in clean water for 24 hours, the germination rate can reach 80% 92%. It can also be placed in human water at the end of autumn and the beginning of winter, and after it is fully absorbed, the seeds can be stored and germinated with mixed wet sand, and the seeds can be sown after the seeds are cracked in the next spring.

The nursery land should choose the place with fertile soil and convenient irrigation for meticulous soil preparation. Every 667m2, organic fertilizer 3000~5000kg should be applied to build flat bed or high bed. Using strip sowing, strip spacing 20~25cm, sowing 10-15 seeds per meter long sowing ditch, covering soil 3-4cm thick after sowing, and often keeping the soil moist. When the height of seedlings is about 10cm, the distance between seedlings and fixed seedlings is 10-15cm, and the height of seedlings in the same year can reach 50~100cm. If the 2-year-old seedlings were cultivated, the seedlings were transferred to another bed according to the row spacing of 0.5m × 0.5m after the seedlings were defoliated at the end of autumn.

The above is the relevant introduction of this article, I believe you have a simple understanding of this after reading it, if necessary, you can continue to pay attention to the No. 1 home network for more information.