How to harvest tree seeds? What are the breeding methods?

Plane tree, also known as Qingtong, Tongma, is a large deciduous tree, can be up to 15 meters high. Plane tree trunk straight, bark green, smooth, native to China, the north and south provinces are cultivated. Its wood is suitable for making musical instruments, its bark can be used for papermaking and rope, and its seeds can be eaten or pressed for oil. it is an ordinary street tree and garden green ornamental tree. So how to harvest the seeds of sycamore? What are the methods of raising seedlings? Next, let's have a look with the editor.

First, how to harvest the seeds of sycamore?

Usually, the fruit of sycamore will crack soon after it is ripe and dehydrated, so the seeds should be collected in time to prevent the seeds and petals from falling with the wind. From September to October every year, the fruit is ripe and can be harvested. When collecting seeds, we should choose those strong mother trees with strong growth and no diseases and insect pests, and choose larger fruits to harvest. When harvesting, hook knives or high shears are often used to harvest the fruit together with the fruit stalks. In addition, bamboo poles and other tools can be used to break fruit stalks and harvest fruit. The collected fruit is stacked indoors, spread out to dry, and the seeds of sycamore are peeled off after the fruit is split.

Sun-dried seeds can be sown in the autumn of the year. If you do not sow in that year, you can choose dry storage or sand storage treatment, and wait until the following spring to sow. Because the seed coat of sycamore seeds is relatively thin, so the seeds are easy to lose water and become dry, and then lose their germination power, usually using mixed sand layer wet storage.

Second, what are the seedling raising methods of plane trees?

1. Seedbed preparation

Choose soil with good drainage, add 1/3 of river sand, or 2 parts of black soil plus 1 part of sandy soil, and apply some organic fertilizer, usually 800 to 1000 kg per mu, or chemical fertilizer, urea, compound fertilizer, etc., about 10 kg per mu, spread evenly and turn over. It is convenient for later management, the width of the seedbed is about 1.2m and the length is unlimited. Because the seedlings of sycamore are relatively strong, the sown soil can be used without prior disinfection.

2. Collection and storage

The disease-free, robust and well-shaped plant is used as the mother plant, which will be harvested after the bulb is mature in autumn. Do not push too hard, open the seed ball, remove the attached villi, dry, select a better full seed bag, put it in a weak light, low temperature, and store it in a darker place.

3. Treatment and sowing

In order to promote the rapid germination of French sycamore seeds, shorten its dormancy time and improve its efficiency, artificial water treatment is needed to accelerate germination. Put the seeds in a basin, soak them in hot water at 70 °C for 10 seconds, then change the warm water, pour out the old water the next day, rinse the seeds with new water, pour out, mix with wet sand, cover with film, place at a low temperature, and continue to germinate in the dark. In this process, the seeds need to be washed with warm water every day to ensure that there is enough oxygen when the seeds germinate, until 90% of the seeds are "white" at the top, then the germination process ends.

4. Pre-broadcast preparation

French sycamore seeds need to be watered to the seedbed before sowing. After the water spontaneously burns and sinks, the seeds together with sand are spread evenly on the surface and covered with fine soil prepared in advance after sowing. It is appropriate to cover the seeds, about 0.5CM. Then the film was used to cover or cover the straw in the form of a small arch shed for moisturizing and shading treatment. French sycamore should be sown at an appropriate temperature, it is difficult to manage when it is too high, it is easy to burn seedlings, and it is not easy to sprout when it is too low.

5. Post-management

About a week after sowing, choose less sunny and more cloudy days, remove the mulch, as the seedlings are very young, to avoid the sun directly. Can continue to cover the shade net, to maintain the net height of about 20CM, one is to facilitate water, the other is to prevent the seedlings from being picked up at the same time. The seedlings grow to about 3CM and the shading net is removed. Seedlings with more than 2 true leaves should be thinned and inter-seedlings should be thinned, weak and strong should be removed or cut. When the seedling height is above 3CM, it can be irrigated. 1: prevent excessive watering of rotting roots 2: prevent half of the old watering, prevent young seedlings from yellowing 3: less watering than clayey soil when it does not appear. The seedling height above 5-8CM can be fertilized, and it can be spread with the root before rain or when watering. The quantity is controlled at 3-5 kg per mu.

The above is the introduction of sycamore, which is a famous ornamental tree with fast growth, smooth trunk and beautiful leaves. When collecting seeds, sycamore trees must pay attention to the above methods and store them in time. Now plane trees have also been introduced to Europe, America and many other countries as ornamental trees.