How to grow paulownia planting methods and matters needing attention

Paulownia is a kind of woody plant, which is cultivated and distributed in many parts of our country. Paulownia in childhood, the growth rate is very fast, germination is very strong, like light. It is generally used for landscaping and tree breeding. So, when paulownia is raised in the family, how to grow it? What are the planting methods and matters needing attention of paulownia?

How to grow paulownia

Paulownia is a kind of plant that likes light and can tolerate shade. In the cultivation of paulownia, the need to maintain warmer climate conditions, note that paulownia is not very cold-resistant.

Planting methods and matters needing attention of paulownia

First, burying roots to raise seedlings:

The roots can be buried from mid-late February to the end of March.

Method of burying roots:

First of all, dig a hole at a fixed point according to the row spacing or draw an eye with a bamboo stick, insert the big end of the seed root upward into the hole, the upper end is slightly lower than 2 centimeters below the ground, then fill and compaction, so that the seed root is closely connected with the soil, and then cover a small amount of empty soil above.

Generally cultivate first-class seedlings with a dry height of about 4 meters, with a density of 667 plants per mu and a row spacing of 1 meter each. If you want to cultivate super seedlings of more than 5 meters, the row spacing can be appropriately increased to 12 meters.

Second, seedling management:

1. Seedling emergence period: during this period, one is to eliminate stagnant water in the seedling land in time, and the other is to prevent surface hardening after rain. Third, for several buds sprouting from each hole, only 1-2 robust buds are retained, and the rest are erased in time.

2. The initial stage of growth: the management of this period is to fix the seedlings. The second is to do a good job in loosening the soil, cultivating the soil and weeding the seedling field. Third, 0.2% urea solution is applied every 10 days, and each plant is irrigated with 1 kg. Seal the soil after fertilization. In case of drought, fertilization should be combined with proper irrigation.

3. Fast-growing period: during this period, the aboveground and underground parts of seedlings grow rapidly, and the height can reach more than 1 meter in 10 days. Therefore, the water and fertilizer management at this stage is very important. Due to the high temperature, high humidity and more Rain Water at this stage, weeds grow very fast, so artificial or chemical weeding should be taken to remove weeds in time.

4. The late growth period: from the first ten days of September to the last ten days of September, the seedling growth is still large, and the phosphorus and potassium compound fertilizer of 40kg / mu can be applied in the first ten days of September to promote the late growth of seedlings and improve the quality of seedlings.

Breeding methods of paulownia

First, sowing and raising seedlings

1. The sowing and seedling raising of paulownia is generally carried out from February to March.

2. The seeds need to be germinated and disinfected before sowing. Soak the seeds in warm water of about 35-40 ℃ for about half an hour, cool and then soak in warm water of about 15-25 ℃ for 12-14 hours. Rinse the seeds with about 35 ℃ of water 1-2 times a day without turning. Generally, after 3-5 days, the seeds can be sown after germination.

3, or use wet sand to promote sprouting, which takes about 10-15 days, water regularly and keep the relative humidity between 90-95%.

4. the strip sowing method is adopted for sowing and raising seedlings. After sowing, the soil should be burnt or covered with a thin layer of grain ash, and then properly compacted, and finally covered with straw.

Second, burying roots to raise seedlings

The main results are as follows: 1. Roots can be picked from fallen leaves to before germination. It is usually carried out from mid-February to early March. Seed roots are left after 1-or 2-year seedlings are collected from the nursery, or lateral roots 2-3 cm thick are selected from strong trees, and then cut into root segments with a length of about 15-20 cm. The small head is cut obliquely and dried for 2-3 days.

2. Direct burying or oblique burying can be adopted, but direct burying is the best. The upper end is not exposed or slightly exposed to the ground to prevent upside-down and control a reasonable spacing. The suitable plant spacing is about 0.8-1 m and the row spacing is about 1 m.

3. In addition, one-year-old branches with a diameter of about 20 cm can be selected and cut into cuttings with a length of about 20 cm for cuttage.

What are the main pests of paulownia?

1. Ground tiger

Nocturnal activities, mouth to eat paulownia young stems, resulting in the phenomenon of lack of seedlings.

2. Mole cricket

Adults and nymphs are mostly active at night, mainly eating the buds and seedlings of paulownia, causing them to wither and die, resulting in a serious lack of seedlings.

3. Paulownia leaf beetle

Adults and larvae harm the leaves of paulownia. June and July are the peak of damage.

4. Paulownia net bug

The damage was serious from July to August, and the initial symptoms were yellow spots on the front of the leaves and dark red spots on the back. In the later stage, the leaves curled, dried and browned, and then fell off, like burning, and even died in serious cases.

5. Red head Daphne genkwa

It is harmful for adults to eat leaves. The middle of June was the peak period of adult damage, and began to lay eggs at the beginning of July.

Paulownia is a kind of plant that likes light and can tolerate shade. When raising paulownia, it needs to maintain a warmer climate, it is not very hardy. In the choice of soil, generally choose loose and fertile soil, the soil layer should be deep, can adapt to heavy clay soil.