1) Spring breeding
Mainly by cutting and grafting. Spring is the flowering period of Phnom Penh in Phnom Penh. It is also the growth period of new shoots. During this period, the temperature is getting warmer and the air humidity is narrower. The cuttings should be carried out in early spring and late spring. In early spring, buds with buds before flowering are used as cuttings and are 5 to 10 cm long. If you cut a circle with a knife ring the day before the cut, you can speed up healing and rooting. The ring cut should be selected 0.1 cm above the branch point or 0.1 cm below the branch point. The ring is cut at the branching point, and after timely cutting, the wound is trimmed and the lower half of the branches can be cut and inserted. If the ring is cut under the branching point, if there are several branches, the wound is torn open.æ… is 1/3 or 1/2 deeper than the branches. After being inserted, covered with plastic film, heat preservation, moisturizing and waterproofing. Because the cuttings can still bloom and shoot, it is generally necessary to wait until the new shoots are stopped for a long time. This can take root, and the rooting time is about 40 days. The late spring cuts are carried out after the new shoot stops. Select the twigs of the current year, and cut them in accordance with the above method or treat them with rooting hormones. After about one month, they can take root and survive.
Spring is also a good time for grafting, and it is best to proceed after the new branch is stopped. The scion was selected from the middle and upper part of the canopy, with 1 to 2 years thick branches of cattle, cut into 2 to 3 cm branches, leaving an upper part of the leaves, buds should have obvious buds. With 1 to 2 years old Bai Ruixiang seedlings or cuttings seedlings as rootstocks, line cut or abdomen. It is best to use hemp rope as a binding material because it has good air permeability and it will rot for a long time and be unbound. Pay attention not to damage the leaves on the branches when grafting, while the survival rate will be affected by the wolfberry. Afterwards, depending on the number of grafts, bagging or covering with a film is used to keep warm and waterproof. Grafting usually lasts for one month, and sprouts in summer. Grafting seedlings grow fast and can shoot 2-3 times in the year, which is an effective breeding measure. Also note that, whether it is cutting or grafting, it takes 20 days for shading before it can accept short shots before 10 o'clock.
2) Summer breeding
Mainly by cutting and high pressure. At this point the new branches tend to mature, the top of the branches begin to form flower buds, a good season for foot cutting. However, because of the high temperature and high humidity in the summer, it also brings many troubles to the cuttings, such as: poor disinfection or soil water, cuttings perishable, and due to decay often spread upward from the incision, not easy to detect; can not be covered with plastic film (high temperature The lower cover film is easy to fall off; sunny days should at least be sprayed twice with moisturizing and so on. If the water plug method is used, quick rooting and high survival rate (almost 100%) can reduce the number of water sprays. The method is to use a bottle and a tank to hold water, treat the cutting strip according to the foregoing method, insert the water into 1/3, and straighten and fix it. Usually, depending on the amount of water, add water to the original water level. Within a month you can make a living.
High pressure is the traditional method of breeding Phnom Penh. It is easy to operate, has quick rooting, and has a high survival rate. In summer, it is the best time for high pressure reproduction. The method is roughly the same as the ordinary high-pressure method, but if the pressure is small, the ring-stripping mouth should be smaller, and the 1- to 2-year-old branches can be stripped 0.8 to 1 cm. The site of stripping is best 0.1 centimeters below the branch point, where the new and old branches meet, the tissue is dense, the nutrient content is high, and the healing and rooting are fast. After cutting, some plants can be torn by the number of branches. If you apply rooting hormones to the ring, you can speed up healing and rooting. If the method of abdominal connection is used to connect the root of white thyrein to the upper end of the excision, it can have the advantages of high pressure and grafting. It should be noted that the packaged soil after the pressing in the summer is easy to dry. A syringe can be added to suck water into the soil to keep the soil moist. One month later, the roots have grown and the colonization can be cut. If Tugang is heavy and the branchlets are difficult to bear, the support of the vertical strips is sufficient.
3) Autumn breeding
During this period, the new shoots are mature, the buds gradually increase, the branches are abundant, and the temperature is also reduced to appropriate. It is a good time to breed in various ways, and the cutting seedlings or high-pressure seedlings can all flower normally. When the temperature drops to around 25°C, the breeding seedlings should be covered with plastic film. The amount of water sprayed needs to be greatly reduced compared to summer. It can be checked once every few days, depending on the soil surface, white water, appropriate amount of water spray, can take root in a month. Grafted to the abdomen as well, but also by the connection, according to the next month, depending on the normal leaf, you can break the anvil, loose membrane ventilation, solution should be tied up in the spring of next year.
4) Winter Breeding
At this time, the flower buds of Phnom Penh in Phnom Penh continued to grow, and by the end of December, the blooming of the leaves was blossomed. Due to the low temperature and imminent flowering, nutrient consumption is large, healing and rooting are more difficult, but the mortality rate is also low (low temperature inhibits mold activity). If the cuttings do not use a hotbed, they will take root after flowering. In order to prevent flowering and consume nutrients, it is advisable to remove all the small flowers after flower buds bloom, in order to promote rooting sooner. Grafting is still based on the grafted graft, which can sprout after an anvil break in the spring of the following year. High-pressure propagation should not be carried out due to the long rooting period.
In addition, the most taboo of Phnom Penh is “wetâ€. The cutting substrate should be mainly fine sand, fine sand particles are small, and it is in close contact with the cuttings, and sand can prevent mold invasion and spread. It is also permeable to water and air, but its insulation performance is worse than that of ash. Phnom Penh's root is fleshy, and cultivating soil is most beneficial to its growth. Loose leaves are loose and fertile, permeable and breathable, and have strong fertilizer retention and moisturizing capabilities. With 30% fine sand as the culture soil, the seedlings grow very well. However, it should be disinfected regardless of the cutting substrate or high-pressure cultivated soil. In order to prevent the disinfectant from adversely affecting it, the disinfection methods we use are two kinds, exposure and boiling water.
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Fluorine-Containing Phenol
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