Sophora japonica
Sophora japonica
Sophora japonica
Sophora japonica
Sophora japonica
Sophora japonica cultivation techniques
Sophora japonica is a garden commonly used featured species of trees, with its dense foliage, green shade such as a cover, suitable for the shade tree, in northern China, more used as street trees. Planted in parks, buildings around, neighborhoods and lawns, also very suitable. Long-jawed acacia is suitable for the door to plant or column planting, or planted alone in the pavilion beside the rock. Can also be used for industrial and mining area greening. Ornamental value is very high, today we will introduce to you how to raise acacia, acacia breeding techniques.
Acacia breeding technology:
1, seedling
Sowing generally 7~10d start seedlings, 10~15d out of all. Mulching plots should be uncovered when the seedlings grow 2~3 true leaves. In the seedling height of 15cm in 2~3 times between seedlings, set seedling spacing of 10~15cm, mu left about 8000 seedlings.
2, transplanting
For greening seedlings, generally 3~4 years to the nursery, due to the seedlings at the top of the branch buds dense, ask the short distance, the trunk is very easy to bend, the following spring will be a year-old seedling according to the plant spacing of 40~50cm, row spacing of 70~80cm for transplanting, can be planted after the trunk from the ground at 3~5cm cut off the trunk. Because the acacia tree has sprouting power, easy to occur after the cut off a large number of sprouts, when the sprouting shoots grow to 20cm or so, choose to stay in 1 upright upward strong branch for the main stem, the rest of the branches are all erased. Afterwards, pay attention to the side of the tiller at any time, on the main stem, in the lower part of the weak lateral branches temporarily retained, to prevent the main stem bending favorable. In this way, the following year, the height of the seedlings can reach more than 3m.
3, fertilizer management
Acacia seedlings watering should be based on climatic conditions, soil texture and other factors, to determine the number of watering. In general, after the emergence of seedlings to the rainy season before watering 2 ~ 3 water, nursery freezing before watering 1 freeze, timely drainage in case of waterlogging; before sowing, nursery mu fertilizer (organic fertilizer or fertilizer-based circle) 3000kg or so, to the first half of June, combined with watering can be acres of fast-acting nitrogen fertilizer, such as urea or Bicar "high-nitrogen composite fertilizer") 8 ~ 10kg, in July and August, the mu of fast-acting nitrogen fertilizer such as urea or Bicar "high-nitrogen composite fertilizer") 8 ~ 10kg. 10kg, July to August urea (preferably mixed with the appropriate amount of compound fertilizer 12 to 3 times, each time the amount of fertilizer 30kg or so. after September no longer watering fertilizer to promote the lignification of seedlings.
4, plastic pruning
According to the need for plastic pruning can be shaped and pruned into a natural happy shape, cup-shaped and natural type of co-axial trunk shape 3 kinds of tree shape. Natural happy shape that is when the main trunk grows to more than 3m to set the stem, choose to stay 3 ~ 4 strong growth, the angle of the appropriate branches as the main branch, the main branch of the following lateral branches and buds removed in a timely manner, winter pruning of the main branch of the short cuts, stay 50 ~ 60cm, to promote the birth of secondary tips to form a small crown; cup shape that is after setting the stem of the same as the natural happy shape to stay in the 3 main branches, winter pruning of the main branch of the main branch to stay in each of the 2 short cuts of lateral branches to form 6 small branches, the main branch is the main branch, the main branch, the main branch, the main branch, the main branch of the main branch of the main branch of the main branch. The formation of 6 twigs, summer centering, growth control, the following year when the winter pruning in the twigs on each selected 2 branches short cut, the formation of "3 strands of 6 right 12 branches" of the cup shape; natural style axis trunk shape is to leave a good main branch, the future pruning as long as the retention of strong top buds, upright buds, and to raise strong branches at all levels, so that the crown is constantly expanding.