How much is the price of tall and straight poplar seedlings? What are the characteristics? Which variety is better? How do you plant it?

Poplar belongs to the genus Poplar, with more than 100 species in all genera, also known as Ma Liu (Hubei) and centipede willow (Anhui). Mainly distributed in Liaoning, Jilin, Xinjiang, northern Shaanxi, Shandong. So how much is a poplar seedling? What are the characteristics? Which variety is better? How do you plant it? Learned from the Shandong seedling base, Shandong 4 cm poplar seedlings price 8 yuan, Hebei 4 cm poplar seedlings 9 yuan, Jiangsu 4 cm poplar seedlings 6 yuan, the price is basically the same.

What are the characteristics of poplar?

1. Morphological characteristics: Poplar branchlets have more than two terminal buds and bud scales, single leaves alternate, ovate or suborbicular, soft inflorescences, dioecious, apetalous, annular disk and bracts. Bracts apically divided, stamens numerous. Capsule. Small, with crown hairs.

2. the characteristics in literary works: upright, resolute, able to overcome the difficult environment, lonely watcher, symbolizing hope, vitality, strong and unyielding life.

Which variety of poplar seedlings is good?

On plants, poplars belong to the family Salicaceae. There are three genera in this family, namely, Populus, Salix and Salix. The classification system of Populus is divided into five schools: Qingyang School, Poplar School, Black Poplar School, Populus euphratica School and Daye Poplar School.

1. In the poplar group, the bark is usually gray and smooth, and only the base of the old tree is rough. Buds tomentose or smooth. Leaves tomentose, tomentose at least under long branches; short branches tomentose or smooth; petiole laterally flat or subTerete. Bracts striate, margin long hairy, stigma 2-4-lobed; stamens 5-20, anthers not apiculate. Capsule long ellipsoid, usually 2-valved.

2. In the big leaf poplar group, the bark was flaky and rough. Buds conical, slightly sticky, smooth. Leaves of short and long branches suborbicular, base cordate or deeply cordate; petiole only apex puberulent. Disk parted, persistent; stamens 12-40, anthers long elliptic, apiculate; ovary pilose, style longer, stigma 2-3-lobed. Capsule hairy, 2-3 (4) valved.

3. In the green poplar group, the bark was split longitudinally. The bud is big, sticky and has a strong fragrance. Leaves green above, usually white below, with different shapes of long and short branches, base cuneate, rounded to shallowly cordate, margin without translucent narrow margin; petiole rounded or subquadrangular, grooved, varying in length. Stamens 8-60, anthers long elliptic to globose; stigma 2-4-lobed; style short or absent. Capsule 2-4 (5) valved, disk persistent.

4. In the black poplar group, the bark split longitudinally. The buds are sticky. The leaves are usually triangular-ovate or rhombic-ovate, the apex is long acuminate, the base is truncate or broadly cuneate, the margin is circular serrated, and has a transparent narrow edge, both sides are green and have stomata. Stamens 15-30, anthers subglobose or ellipsoid, stigma 2, without style. Capsule 2-4 valved, disk persistent.

5. In Populus euphratica group, the buds were non-sticky and hairy. The leaf shape is varied, both sides are grayish blue, only there are stomata below; the petiole is round.

How to plant poplar seedlings?

1. Choose the nursery site carefully. The selection of seedling site is the key to the success of poplar nursery. If the nursery is not selected properly, it will affect the seedling effect in the next 3-4 years. Loose sandy loam or light loam should be selected for seedling cultivation, while heavy clayey soil and "general sand" land with poor water and fertilizer conservation should not be selected. The nursery should have a flat terrain, convenient transportation, a groundwater level of not more than 1 meter and a soil thickness of not less than 0.8 meters.

2. Land preparation. Before cutting, 80 kg / mu compound fertilizer was applied, the seedling land was deeply ploughed with 30~875px, and rake flat was sprayed with 800 times liquid of high lipid film in time to increase temperature and preserve soil moisture.

3. Collection of seed strips and cutting of cuttings. Cuttings refer to the short segments cut by cuttings for cutting. The cuttings of poplar seedlings must be cut off with one-year-old seedlings.

Picking time: generally collected before the sap will flow in early spring, then soak the lower end of the seedlings into the water, so that the seedlings fully absorb water.

Cutting cutting: cutting cuttings with a sharp knife, cuttings length 18~500px, thickness 1~37.5px, the first lateral bud at the upper end of the cuttings should be intact, the distance between the upper incision and the first lateral buds should be 25px, spraying 800x liquid of new high-fat film on the incision can protect the wound from disease invasion. When cutting cuttings, the cuttings in the upper, middle and lower parts of the seedling stem of the same variety were placed respectively and raised separately, so as to avoid the phenomenon that the seedlings were irregular and the big seedlings pressed the small seedlings.

4. Cutting density: seedling density has an important effect on the quality and yield of seedlings, if the density is too high, the nutritional area and space of poplar seedlings will be reduced, the seedling quality will decline; if the density is too low, the seedling yield is too low, affecting the income. I think that the seedling density of ⑴ afforestation seedlings should be about 3000 plants / mu, not more than 3500 plants / mu. The nursery for ⑵ production of seed strips can be 3500000 plants / mu, not more than 4000 plants / mu. The thickness of seed strips can reach 37.5px, less branches, more buds and good quality. ⑶ can set up a special nursery for poplar seedlings in low mountain and hilly areas to produce about 3.5m seedlings with a density of 3500000 trees / mu. Wide row dense plants, such as 0.4 × 0.6m, 0.35 × 0.7m, 0.3 × 0.7m, etc., are recommended in the design of row spacing, which is convenient for field operation, especially for the application of base fertilizer in the method of keeping roots and seedlings in the next few years.

5. Cutting time: in the north, it is appropriate to cut from the middle and late February to the first and middle of March, and it is best to cut when the soil moisture is good after rain. There are also cuttings in winter, but the survival rate may be affected in case of spring drought.

6. Cutting method: the poplar cuttings soaked in water are vertically inserted directly into the soft soil of the nursery, and the cut on the cuttings is level with or slightly higher than the ground, which can stabilize the soil slightly and make the soil close to the cuttings.