Cutting propagation

The suitable cutting time of screw iron is generally between March and October. When cutting, put the bud eye of the cuttings upward and slightly tilt it into the soil. The cutting depth is about 1 / 2-2 / 3 of the cuttings

Post cutting management

Water shall be poured immediately after insertion. The water content of cutting matrix should be about 60%, and the relative humidity should be maintained between 80% and 90%. Pay attention to supplement water in time. Generally, the callus can be formed after half a month. At this time, in order to facilitate rooting, the amount of watering can be gradually reduced

It's better to keep the temperature 3-6 ℃ lower than the substrate temperature. You can use film for cooling and moisturizing. The suitable temperature for rooting is about 20-25 ℃. If the temperature is above 30 ℃, ventilation shall be carried out at noon and water spray shall be used to reduce the temperature

After insertion, 65% mancozeb or 50% carbendazim 800 times solution should be sprayed. Generally, it should be sprayed once every 5 days, especially after rain. After the cuttings take root, the spraying times can be gradually reduced. Once the callus was formed, foliar dressing was needed once a week. Spraying 0.2% 1 0.5% urea and potassium dihydrogen phosphate mixture at the later stage. p>

Cuttage cultivation

After the cuttings grow for half a year, they can be transplanted when their length reaches about 15-20 cm. The transplanting is generally carried out in spring and autumn, and the suitable time is between February and may and September and October. When transplanting, we should choose a place with 60% - 70% shade density, water source and stone moss, which can improve the survival rate. In general, it is best to use the clamp nail method for cultivation, use the steel nail to compress the screw iron root system, and then clean up the place where the root system is pressed, retain other mosses, increase the water content, and then improve the survival rate< span>