Cutting time of Luohan pine

It can be carried out in spring and autumn. The effect of spring planting is better, and the middle of April is appropriate in the south

Cutting method of Luohan pine

Before cutting, 2 / 3 of the lower part of the cuttings should be immersed in the prepared NAA rooting solution. The cutting depth should be 3-4cm, and the row spacing of cuttings should be 3-5cm. In order to get uniform light, the leaves should be in the same direction during cutting, and the leaves are generally along the longitudinal direction of the seedbed, which can promote early rooting and germination. After the seedbed is fully inserted, water it in time to ensure that the soil is wet and make the scarified soil in close contact with the cuttings. After cutting, spray carbendazim on the leaf surface for disinfection in time to reduce the occurrence of diseases and pests. The spraying concentration can be slightly higher, and it is better for the leaves to be white after spraying. After that, build a small arch shed immediately, support it with bamboo pieces, insert 1 bamboo piece every 1.5m on both sides of the seedbed, and finally cover it with plastic film to maintain humidity

Management of Pinus arhensis after cutting

Watering

It can be dry and wet. The root fixing water can be used. The water soaked in cuttings can be directly poured into the basin with light strength, which can not only disinfect the cutting matrix again, but also closely combine the river sand with cuttings. You can also mix Carbendazim and rooting powder with water, spray the whole box for disinfection, and cover it with a glass plate

Fertilization

Foliar topdressing should be carried out frequently after cutting. After callus formation and young roots grow, nitrogen fertilizer solution can be sprayed. After a large number of roots grow and before transplanting, the spraying concentration of nitrogen fertilizer can be appropriately increased

Later maintenance

Before cutting to the occurrence of roots and buds, avoid exposure to the sun and do a good job in shading to ensure that the shading rate exceeds 75%. The forenoon of the glass plate is sprayed once every morning after the temperature rises. Do not touch or flip the insert at will. Remove the glass plate in summer

Pest control

It is easy to occur in the cutting stage of Pinus koraiensis and aphids. Pay attention to timely prevention and treatment< span>