Root cutting of Araucaria lanceolata: selection of root panicle

A healthy mother plant of root and ear will ensure that the growth trend of root and ear is good and not easy to get sick. Therefore, the mother plant of root and ear must be strictly selected. Generally, the trees that are 5-10 years old and suitable for greening seedlings should be adopted. The mother plant should also be strong, free of diseases and pests, thick green leaves and dense branches and leaves

Root cutting of Araucaria lanceolata: collection of roots and ears

April and may of each year are the best time for cutting. We should take this opportunity to collect roots and cuttings

Collect the remaining roots after seedling excavation, or dig some roots at the shallow part of Araucaria lanceolata from the soil surface as cutting materials

Araucaria root cutting: preparation before root cutting

Root ear treatment plays a key role in plant growth, so it should be treated in time after collecting root ears

The root system should be dried in a cool place with a thickness of about 1.0 cm to prevent the root system from decaying. The root system should be dried in a cool place with a ventilation of about 1.0 cm to prevent the root system from decaying

The matrix and environment of root cutting should meet certain standards. It is best to select the pure river sand with a particle size of 0.5-1.0mm as the cutting matrix, which has the advantages of good ventilation and drainage

Before cutting, build a cutting bed with bricks, and determine the size of the cutting bed according to the specific cutting quantity

Put the matrix into the cutting bed, level and compact

Araucaria root cutting: method

The best cutting method is row cutting. The plant spacing is kept at 4cm and the row spacing is kept at 6cm. It is best to measure it with tools to avoid too dense cutting and hinder plant growth

Use a small shovel to open an inclined ditch in the soil, with a depth of about 7 cm. The roots and ears are inserted into about two-thirds of the sand bed, and then place the roots and ears neatly in the ditch with an equal distance of 4 cm, head up, and then cover the soil and compact

Araucaria root cutting: Post cutting management

Just after the root cutting, it is necessary to pour water once to maintain the temperature of the surrounding environment at 15 ℃ - 25 ℃ and the relative humidity of the air at 70% - 80%, so as to ensure sufficient light and a little shade. If the cuttings are maintained in such an environment, it is easy to form adventitious roots and buds, and the survival rate will be greatly improved