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2. Breeding methods Breeding methods mainly use cuttings and high air pressure.
(1) Cutting propagation method Before spring, the annual mature shoots are cut without budding, cut and grown to 10 cm, and the cuttings are inserted into the breeding bed with a leaf, and the water is poured, covered with a film, kept moist, placed on the half shade, and changed once a day. Keeping the temperature and humidity high, the optimum temperature is 28°C, and the relative humidity is approximately 95%. The high temperature and humidity in summer are the most suitable time for cutting in most regions. A good 50-day management can take root. If soaked with naphthalene acetic acid, aqueous solution of butyric acid and vitamin B12, it can accelerate growth and increase the survival rate. One month after rooting, the pots are usually transplanted in seedlings for 2-3 years before transplanting.
(2) The air pressure strip method is suitable for potted plants, and the small amount of breeding method uses the high air pressure strip method. In the spring and summer, 1-2 years of growth were selected and the shoots 2-5 cm in diameter were planted at 6-9 cm from the branch point. Ring peeling, about 2-5cm wide, etc. The incision is slightly dry and then wrapped with mud or moss, vermiculite, or mixed with loam and cow dung applied to the stripping site, about 9-12cm wide, external plastic film solid, after high pressure Always shower with water to keep the mud in the ring area moist. After 2 months, continue rooting and moisturizing. After 3-4 months, cut off the mother, put it on the pot or transplant.
(3) In addition to planting rice in the warm area, the transplanted rice plants are generally potted plants, and the pots are placed between spring and summer. Fertilized soil requires proper fertility, available 25% rot leaf, compost 50%, river sand 25%, well drained, put a small amount of fully cooked cake dried or used slightly alkaline soil, neutral soil, peat soil with phosphate fertilizer The composted soil was used as a culture soil, and the pot was planted in Milan and watered. If it is planted in Milan, it should be planted at an average density of 3m2 and watered after transplanting. However, watering should be avoided in half a month to facilitate the development of new roots. However, strong sunlight should be avoided at this time.
3. Field management Liquid fertilizer is applied once every 10-15 days after transplanting (water containing manure with ferrous sulfate). Before the sunset, the leaves are sprayed with water of similar room temperature. The spring season grows vigorously, the water content is sufficient, and the air humidity is high. After the fall, the water content is gradually reduced to reach the degree of moisture. Always keep the foliage clean. If there is dust, rinse it with water that is similar to the room temperature. The room temperature in winter is maintained at 10-12°C. When the temperature reaches 18°C, it can grow and bloom normally. At this time, it should be properly watered and poured once every 2-3 days. It is appropriate to apply some liquid fertilizer at maturity, it is not easy to water more than 12°C. See a little bit of soil, do not apply fertilizer, spring out of the house, can not be direct sunlight, Banyin dispose of a period. Plants are robust and flowering. The order of the magnolia flower is from the new shoot leafhopper, so it does not need to be trimmed to allow natural development. If the tree does not look good, it can be trimmed after flowering and flowering.
4. Diseases and Insect Pests Prevention Milan has few pests and diseases, and it is important to prevent the damage of aphids and leaf roller moths. Insect pests include red spiders, shells, and usually pay attention to ventilation. When pests and diseases are found, they are sprayed with 1 000-2 000 pieces of dimethoate or sprayed with 100-150 times of oil emulsion; 500 to 1,000 times of carbendazim is sprayed on soot. .
1. The site for site preparation and selection shall be warm, humid, sunny, well-drained, loose, rich in humus, slightly acidic loam or sandy loam or neutral soil. Potted plants may be selected from acidic neutral soils, and peat soils or composts grown with phosphate fertilizers are generally used as culture soils.