Qianjinjuan is the name given to the farmers of Liuchen Zhoulong Village in Pingnan County who collected the wild mandarin from the Qianjinshan Forestry Centre. The method of grafting and replacing the lower case of Qiantangju is described as follows:

Grafting time and scion selection

In the spring, summer and autumn, the grafting and grafting were performed in low grades. Before spring shoots sprouted in the summer and autumn, the shoots used in the shoots were aged and matured. Due to the fact that the age of the tree being replaced and the length of the anvil are relatively large, the scion diameter must be between 0.5 cm and 1 cm, otherwise it will affect survival.

Low grafting method

First saw the anvil pile which was changed to be sawed off at a distance of 20cm to 30cm from the ground. Cut the anvil with a sharp grafting knife and cut the 3cm long interface from the top to the bottom of the cutting plane. Deeply reach the xylem and view the anvil. The size of the pile is determined by the number of tree heads to be connected, and the anvil with a diameter of 3 cm to 5 cm must be grafted with 3 branches. Note that the distribution should be uniform. The scion used is 5 cm long, with 5 or more shoots retained, cutting the lower part of the scion from the 1 cm to the back, cutting the epidermis 2.5 cm back and deep into the xylem, then inserting the scion pods into the anvil. Align the formation layer. After fixing the scion, the right hand used a 4 cm wide grafted plastic film strip to wind from bottom to top, wrapped the anvil pile, and then wrapped the scion.

Post-grafting management

After the grafting, pesticides were sprayed to prevent pests from biting through the agricultural film. In each anvil pile tree tray, 10kg to 15kg of farmhouse manure was sprayed, and then weeding every day for 15 days combined with loose soil. About 10 days after grafting, a large number of "wild shoots" will be extracted at the base of the root of the anvil, which should be promptly removed. In the scion budding stage and leaf spreading stage, each insecticide, acaricide, and disease prevention agent was mixed and sprayed for 2 to 3 times. Each batch of shoots should be topped when they are 10 cm to 15 cm long, which promotes more branches after being cooked. In the second branch of the old mature to be timely film, if it is lush growth but also use wooden stick support to prevent the wind blow. One year later, it will be managed according to the fast-growing high-yield method.

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