Acidic soils such as camellia, rhododendron, milan, and gardenia in the south are more difficult to reproduce in the north. After testing, the method of using drugs to treat and change the matrix is ​​better. The main points are as follows: The substrate matrix is ​​preferably made of vermiculite. Because of its dark color, it absorbs heat more, loose and breathable without bacteria, and the upper pot is not easy to damage after cutting. The thickness of the substrate is required to be 15 to 20 cm. Disinfect with 5% potassium permanganate solution before inserting and insert the cutting after 2 to 3 days. Cutting inserts shall be selected from the age of 10 to 15 cm. Leave 3 to 4 leaves on the branch, half cut in each leaf. The cutting incision should be flat and inclined, resulting in a larger healing tissue and more rooting. Before cutting and inserting, soak the base of the cuttings with 50ppm of acid for more than 6 hours, wash and dip after immersion, preferably in the rainy season. The cutting depth is 1/3 of the cuttings, and after plugging, it is filled with water and covered with plastic film. Management to control the temperature, prevent direct sun, you can add a layer of curtain. At noon, the temperature should be kept at about 25°C. If it exceeds 30°C, ventilation or water cooling is required. Within 10 days after insertion, the relative humidity should be kept above 95%. Otherwise, the cutting blades will fall off easily, and the plants will lose nutrients due to the endogenous roots, causing withering. Therefore, spray water 1 or 2 times a day to keep the seedbed moist, but avoid accumulation of water. Take the above method, generally 10 to 20 days cutting wounds can be healed, survived about 120 days.
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