What are the common varieties of poplar seeds? What are the methods of raising seedlings?

Friends living in the countryside will generally see many different kinds of trees, poplar is a more common one, it has a wide range of uses, so some people will plant it specially. So what are the common varieties of poplar seeds now? What are the methods of raising seedlings? Friends who want to know will know after reading the following!

What are the common varieties of poplar seeds?

1. Populus davidiana belongs to the genus Populus of the family Populus, with deciduous trees up to 25 meters high. The bark is smooth gray-green or gray-white, the base of the old tree is black and rough; the crown is round.

2. Italian poplar is a big deciduous tree with a long oval crown. Bark grayish brown, lobed. The leaf is triangular, the base is cordate, has 2-4 glandular spots, the leaf is slightly longer than the width, the leaf is dark green.

3. Populus tomentosa is a plant of the genus Populus of the family Populus, which is endemic to China. Distributed in North and Northwest China, growing in areas ranging from 750m to 2400 m above sea level.

4. Sichuan poplar is a poplar plant of the family Populus, with a height of up to 40 meters. Bark grayish white, upper smooth, lower rough, dehiscent.

5. Hebei poplar is a tree of the genus Populus of the family Populus, which is as high as 30 meters. Bark yellowish green to grayish white, smooth; crown round. Leaves ovate or suborbicular, 3-8 cm long and 2-7 cm wide.

6. Red-leaf poplar is a plant of Poplar of Salicaceae, and it is a bud mutation variety of fast-growing poplar 2025. Belongs to the tall color deciduous tree, the broad crown, the male does not have the catkin.

2. Seedling raising methods of poplar seeds

1. Selection of nursery sites

The nursery land should be selected in the land that is fertile, moist and well drained. At the same time, the plot must have the characteristics of convenient drainage and irrigation to ensure that it can be irrigated and drained at any time.

2. Soil preparation and fertilization

Before cutting must be comprehensive soil preparation, require ploughing depth of more than 25 cm, to achieve deep ploughing fine. If it is a rotary tiller, it had better be solid after ploughing. During deep ploughing, 20 kg of urea, 75 kg of superphosphate and 10 kg of potassium sulfate were applied per mu as base fertilizer, while 1-2 kg carbofuran per mu was applied to kill underground pests.

3. Collection and treatment of seed strips

Poplar cuttage seedlings should be collected with good Lignification, no disease and insect harm, straight stem shape, 1-year-old 2-2.5 m high seedlings with full lateral buds as cuttings, generally the middle and lower parts have the best quality. The time of cutting is generally along with the cutting before sprouting in spring, but it can also be harvested in late autumn and after defoliation of seedlings. Winter storage can promote the formation of callus in the incision and is beneficial to the rooting of cuttings.

4. Cutting time and method

In general, it is appropriate to cut in early spring. The cuttings are cut directly into the seedbed. Do not turn the cuttings upside down when cutting. In addition, cuttings were cut at the base, middle and top of the cuttings, respectively. This can make the seedlings grow neatly and avoid the phenomenon of bullying the small. The cuttings must be irrigated immediately after cutting to make the cuttings closely combine with the soil.

5. Topdressing in time

Topdressing is generally about 50 kg of urea per mu per year, and a certain amount of phosphate and potash fertilizer can be applied according to the soil conditions. Topdressing is generally carried out in three stages in late May, mid-June and mid-July.

Well, the above is all the content that the editor wants to share with you. The above editor gives you a detailed introduction of the six varieties of poplar, each of which has its own characteristics. In addition, the editor also shares the methods of raising seedlings in detail, hoping to help you!

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