Seed price and planting method of ginkgo biloba

How much is the ginkgo seed per jin?

The price of Ginkgo biloba seeds is about 5-8 yuan per jin, but it varies greatly due to the quality, variety, origin, market and quantity of seeds. Ginkgo biloba is often used for cutting, grafting or split propagation in production, and sowing and propagation is often used for large-area greening seedlings or for making clump-type bonsai. After the seeds are harvested in autumn, the outer seed coat is removed and the seeds with pericarp are dried in the sun, which can be sowed in winter or in spring in the following year. If spring sowing, mixed sand layer accumulation must be carried out to accelerate germination.

What are the varieties of ginkgo?

1. Dongting Emperor: Dongting Emperor is the largest seed of ginkgo biloba in Dongting Mountain. The seed is obovoid and plump, with an average nuclear weight of 3.53 grams. It is produced in the West Mountain of Dongting, Suzhou, Jiangsu Province.

2. Plum nucleus: the seed of plum nucleus is large, nearly round, the apex is round and obtuse, the base is slightly wide, the nucleus is slightly flat, the apex is obtuse or pointed, and the base is attenuated, which is produced in Zhuji, Zhejiang.

3. Paulownia fruit: the seed of paulownia fruit is large, oblate, the apex is obtuse, the base is wide, the nucleus is subround, obtusely rounded and unpointed, the ridges on both sides are prominent, and the bottom is fishtail-shaped, produced in Xing'an, Guangxi.

4. Big horse bell: the seed moment of big horse bell is round, the nucleus is oval, hypertrophy, the apex is obtusely pointed and the base is broad round, there is a ridge above the middle, the wing is not obvious, produced in Zhuji, Zhejiang.

How to plant ginkgo seeds?

1, seedling bed production: ginkgo seedling bed selects leeward to the sun, the ground is flat, dig east-west direction (30cm deep, 120cm wide) under the ditch to cover about 5cm of fine sand, around the ditch to add a 10cm ridge to prevent the inflow of Rain Water.

2. Seed germination: the germination time of Ginkgo biloba seeds depends on the sowing time, and the sowing time is based on the late frost period. Because the young buds of Ginkgo biloba are easy to freeze below 0 ℃, it is generally possible to accelerate germination 30-40 days before sowing time.

3. Seeds go to bed: ginkgo seeds are evenly spread on the seedbed after being mixed with sand, covered with 5 centimeters of fine sand, and then put a layer of thin soil or grass to keep the temperature in the seedbed. Finally, cover the seedbed with plastic film, and the film is compacted with soil around it.

4. Transplanting: the seedlings propagated by Ginkgo biloba seeds can grow to 15-25 cm high in that year and can be transplanted after defoliation in autumn, but it should be noted that the nursery bed should choose areas with good drainage to prevent stagnant water from rotting the seedlings near the ground.

Planting methods of Ginkgo biloba

1. Land selection: ginkgo trees have a long life, and one planting can benefit for a long time, so land selection is very important. Sunny slopes with a small slope should be selected as forest land, and neutral or slightly acidic soils with thick layers above, moist and fertile soil and good drainage should be selected.

2. Pollination trees: ginkgo trees are dioecious plants. In order to achieve high yield, pollination trees should be allocated reasonably, and the male plants with the same variety and florescence as the female plants should be selected. The ratio of male and female plants is 25: 50. The square center type of 5 or 7 plants can be used, or the four corners can be arranged.

3. Seedling specifications: ginkgo seedlings should choose seedlings with a height-diameter ratio of more than 50:1, main root length of 30 cm, lateral root evenness, and new shoot growth of more than 30 cm in the same year. In addition, seedlings must also have robust terminal buds, lateral buds full and full, free from diseases and insect pests.

4. Reasonable close planting: ginkgo trees grow slowly in the early stage, and close planting can improve the land utilization rate and increase the yield per unit area. Generally, 88 or 63 trees per mu, 44 or 31 trees per mu, and 22 or 16 trees per mu after a few years.

5. Planting time: ginkgo trees are mainly planted with leaves in autumn and before foliage in spring. Planting in autumn can make the root system of seedlings have a longer recovery period and prepare for shoot germination in spring. The growth of planting before germination in spring is not as good as that in autumn.

6. Planting method: ginkgo trees should be planted according to the designed row spacing. After the nests are dug, the topsoil should be backfilled, fermented fertilizers containing superphosphate should be applied, the roots of seedlings should be naturally stretched during planting, and then the roots should be watered in time while filling in the form.