Low-yield forest transformation technology of Camellia oleifera

1. Camellia low-yielding forests - Camellia oleifera forests with an annual output of 150 kg/ha (oil yield of 600 kg/ha). (Reconstruction target: Forest density of canopy density around 0.7, forest oil production above kg/ha)

2, Fu Fu - to turn over the soil of oil camellia, about 20 cm to 30 cm in depth, remove the large stones in the soil, tree shrews and tree roots, etc., will turn the soil topsoil into the bottom layer.

3. Technical measures for the transformation of low-yield forests

(1) Woodland clean-up: Excavate roots and shrubs from other trees and shrubs in the oil tea forest.

(2) Cockroach recovery method: It is repeated every other year and it is performed in winter or early spring. Ladder with flat land below 150 and gentle slopes are all guided, with a depth of about 20 cm. In mountainous areas with a gradient of 150-250, it is advisable to use round-hill belt-like soil preparation methods with a bandwidth of 8 to 10 meters. Camellia oleifera forests on steep slopes with slopes above 250 should be reclaimed in strips with a bandwidth of no more than 5 meters and rotated annually.

(3) Fertilization: fertilize 2 times a year, once in December to March, once in May. Fertilization in winter was dominated by farmyard manure. The amount of fertilizer was l0 kg/plant, and the growth season was mainly compound fertilizer, and the fertilizer amount was 250 g/plant.

Fertilization method: The use of acupuncture, strip, ring or radial fertilization, fertilization depth of 10 cm or more. Stands with a slope above 150 should be fertilized on the plant uphill.

(4) High-risk varieties: Scope of application: Low-yielding plants that thrive in young forests and young-aged forests, but do not produce results, or have a multi-year result of 0.5 kg/strain or less. Grafting method: the use of skin graft, divided into broken anvil, anvil, anvil, cut scion, rootstock, bonding, tying, moisture shading seven steps. After the management (slightly).

(5) Trimming method A pruning should not be too large, mainly for sparse and light repair, cut off the dead branches, branches and branches, parasitic branches, etc.: The result is that the trees have strong branches and light branches, and the weak branches have heavy shears. The incision should be smooth. The degree of canopy control does not exceed 0.7.