Through several years of observation, it has been found that many factors affect the survival rate of grafted seedlings, mainly the good scion harvesting, grafting period and subsequent management. Can achieve high survival rate of grafted seedlings, seedling growth thick, and good economic returns.
First, scion collection and storage
1, to seize the favorable opportunity, acquisition of robust scion collection need to pay attention to three points: First, seize the opportunity. Twenty-four sessions should be used as the criterion. It is the best time for the tree species to be collected before and after the "convulsion" in early March. During this period, most of the fruit trees were still dormant, and they were closer to the grafting time and the storage time was shorter. It should be noted that the storage temperature is lower than 5°C and the humidity is basically saturated, so that it cannot be frozen, lose water, or be damaged. If it is too late, the scion that has been taken is already sprouting, and it is not easy to survive. The second is to collect robust branches. Should choose to grow in the upper part of the mother tree in the upper part of the year full of full growth, buds full, pest-free spring branches, without twigs, autumn branches. The third is to collect varieties on the border, tie them into bundles, and mark them to prevent confusion.
2, control the temperature and humidity, and store properly, always maintain scion fresh and good scion: when grafted, dormant, that is not budding, without losing moisture, fresh, no mildew, no pest damage, the endothelium is still bright green The key to storage and scion is to properly control the temperature and humidity, the storage temperature is lower than 5 °C, and the humidity is basically saturated. Common storage methods include: 1 soil burial method, that is, scion should be kept in the cool place for a day, and then use the yam soil buried in the shade to prevent water loss and sprouting. 2 cellar storage method: use a newspaper package Yan directly into the deeper, there is a certain degree of humidity in the cellar or sweet potato cellar, more convenient and safer. 3 sand method: use a plastic pocket, installed in a layer of sand buried in a cool layer of sand buried well, but the sand humidity of 20% -30% is more appropriate.
Second, the grafting period and operating technology
1. The grafting period during grafting varies according to the terrain and climatic conditions. The phenological period should be used as the criterion. That is, when the rootstock buds sprout but there is no leaf spreading, the grafting temperature is stable or 10°C. At this time, the temperature rises, sap flows, formation activity, and the survival rate of grafting is high. If the grafting is too early, the temperature is too low for the callus to form slowly and the time lengthens. During this time, a strong wind, drought or continuous rain affects survival rate. If the grafting period is too late, the rootstock is grafted after the leaves are displayed. At this time, the temperature is high and the healing rate is fast. Although the survival rate is high, the rootstock nutrients have been consumed in large amounts at the leaf exploding stage. The growth after grafting is small, and the growth period is short. The tree is weak and even dead. Therefore, the best time for chestnut grafting and nursery is in mid-April, and the rootstock and scion are full of vigor, the temperature is between 10-20°C, the humidity is more than 80%, 2-3 days is good for grafting, and the survival rate is high The seedlings grow vigorously, and the rate of the nursery is high and the economic benefits are good.
2. The Grafting Operation Techniques Grafting Skills should be quick in order to minimize the loss of water in the gap between the scion and rootstock. Grafting tools must be sharp, the operation of the knife is uniform, so that the cut surface is straight and smooth, which will help the healing of the wound. To align the forming layers and to work closely together, tie the interface with a small plastic strip, and the elasticity should be moderate to prevent water loss.
Third, management after grafting
In addition to sprouting. After 10 days of grafting, the rootstock sprouted and was removed in time to ensure that the water-absorbing roots were only used for scion growth. In addition to sprouting 蘖 4-5 times, until the scion flourishes, the sprouting 蘖 does not grow long, loosely tied. Usually after 1 month, when the new one is slightly longer than 30 centimeters, the bundled plastic strips should be loosened and loosened later to facilitate the jointing.
Mint is something that people are familiar with and will be impressed with it if they have been exposed to it. Yes, when it comes into contact with the tongue, it can produce a cool feeling. In addition, the mint has a refreshing effect. When people feel drowsy, they will be excited when they touch the mint. stand up. We add this magical substance to the Electronic Cigarette to provide a good experience. It turns out that customers like it very much.
Quit Smoking Alternatives,Menthol Flavor E-Cigarette,Menthol Heatsticks,Electronic Cigarette Alternative
Dongguan Vanilla Bioengineering Co., Ltd. , https://www.healthecigarette.de