Rational fertilization. Generally, base fertilizer should be applied in winter, with farmyard manure as the main base fertilizer, supplemented by a small amount of chemical fertilizer. The application method of base fertilizer is to dig a fertilization hole with a width of 30 cm and a depth of 40 cm at the edge of crown branch, mix the fertilizer with topsoil, apply it into the hole and pour water on it. Topdressing can be carried out in the growth period of new shoots in spring, and compound fertilizer is the main topdressing. Caves or ditches can be dug around the crown with a depth of 15 cm, and covered with soil after spreading fertilizer. Pay attention to weeding or mowing the trees during the growing season. Don't let the grass grow too high, which will compete with the trees for nutrients.
Pay attention to insect prevention. Such as leaf caterpillar, weevil, etc. If found, chlorpyrifos or pyrethroid insecticides should be sprayed in time. When the rainy season comes, leaf diseases will appear, and carbendazim and fluorosilicone can be sprayed for sterilization and disease prevention.
Shaping and pruning. In order to better promote the growth and fruiting of Camellia oleifera, it is necessary to carry out plastic pruning. The general principle is to keep the tree in balance, with many branches but not dense. For branches that are too big and strong, you can change the branches at the back to make the branches at the same level close in height, and keep the overlapping branches at a distance of 60 cm. If the distance is not enough, it should be thinned out. In addition, it is necessary to remove competitive branches, inward branches, upright branches on the back, cross branches in the inner chamber, over-dense branches and sparse branches, so that the crown is ventilated and light-permeable, thus forming more flower buds and bearing more fruits.