Advantages of double anvil grafting The use of double anvil grafting to cultivate longan seedlings has the following advantages:
(1) The work efficiency is high, and it is suitable for the grafting of seedlings of various types of fruit trees;
(2) It can increase the area of ​​grafted contact and is beneficial to survival;
(3) It can make full use of the fine branches of the fine mother trees and have a wide range of scion sources;
(4) The lower grafting position is conducive to the transportation of water and inorganic salts and the early sprouting of buds, which is also beneficial to the protection of grafted parts in winter.
(5) The "double anvil" has a well-developed root system. After planting, it can expand the absorption area of ​​water and fertilizers, quickly expand the canopy, carry out early fruiting, and resist lodging;
(6) It can shorten the time for raising seedlings, grafting in the spring (late February to late March), and leaving the nursery in autumn and winter. The height of seedlings is more than 1 meter high. The seedlings are stout and grow vigorously. Only 16 seedlings are needed for seeding, breeding, grafting, and gardening. month;
(7) The double anvil grafting method can avoid the graft-like nodule and is conducive to the transmission of organic nutrients;
(8) The operation method is simple and easy to grasp.
Seedling steps
1, breeding anvil: Select fresh, large longan seeds for breeding anvil. There are two ways to raise an anvil:
(1) Drilling method, 1 seed per 4 cm.
(2) Spreading method, after sowing seed, until seedlings grow 2-3 true leaves with seed transplantation, every 4 cm species. Fertilization is mainly human excrement, diligently applied thinly. Per acre with 50 kg of manure water mixed with ammonium bicarbonate 100-150 grams, applied 2-3 times a month, to promote seedling growth.
2. Scion collection: Selecting the optimized longan mother tree branches for scion, basic corkation of the epidermis (red-green), buds to spit out 0.5 cm long shoots is the most appropriate, this is the key to ensure a high survival rate of grafting. Spring picks up with last year's autumn shoots, and then picks up the spring shoots.
3. Grafting method: Longan seedlings with a diameter of 0.3 cm or more should be selected as rootstocks. Apply enough water and fertilizer 1 month before grafting. Cut 7-8 cm away from the ground. After 4-5 days of grafting, graft stocks will be accumulated. The organic nutrients, as well as the evaporation of excess water in the plants, are an important part of ensuring the survival of grafting. First, cut 45 bevels from the middle out of the top of the two rootstocks, then use a knife to cut a knife from the bottom to the top with a small amount of xylem, about 3-4 cm long; 2 buds, cut into "V" shape at the lower end of the scion, 3 cm long; then place the scion in the middle of the two anvils, aligning the formation layer, grasping the two anvils and scion by hand, and binding the grafting site with a small string; finally using nylon The film tape is wound from bottom to top to expose the buds.
Grafted seedling management
1. Loosening: 50-60 days of grafting in the spring, loosening when the seedling is 7 centimeters taller, 40-50 days of grafting in the autumn, and relaxing when the seedling height is more than 10 centimeters. Pre-synthetic nylon film tape, loose rope after 15 days, loosening is conducive to the transmission of water and inorganic salts, to avoid the occurrence of nodules.
2, wiping tip: If the cue spit 2 buds should be wiped out, leaving 1 shoots continue to grow. When the seedling height is 40 centimeters, it is topped to allow it to draw 2-3 branches. At the same time, the axillary buds on the rootstock should often be removed to promote the robust growth of the seedlings.
3. Fertilization: mainly human fecal urine, supplemented by chemical fertilizer, diligently applied thinly, applied twice a month. In case of rain, compound fertilizer is the main ingredient and is applied.
(1) The work efficiency is high, and it is suitable for the grafting of seedlings of various types of fruit trees;
(2) It can increase the area of ​​grafted contact and is beneficial to survival;
(3) It can make full use of the fine branches of the fine mother trees and have a wide range of scion sources;
(4) The lower grafting position is conducive to the transportation of water and inorganic salts and the early sprouting of buds, which is also beneficial to the protection of grafted parts in winter.
(5) The "double anvil" has a well-developed root system. After planting, it can expand the absorption area of ​​water and fertilizers, quickly expand the canopy, carry out early fruiting, and resist lodging;
(6) It can shorten the time for raising seedlings, grafting in the spring (late February to late March), and leaving the nursery in autumn and winter. The height of seedlings is more than 1 meter high. The seedlings are stout and grow vigorously. Only 16 seedlings are needed for seeding, breeding, grafting, and gardening. month;
(7) The double anvil grafting method can avoid the graft-like nodule and is conducive to the transmission of organic nutrients;
(8) The operation method is simple and easy to grasp.
Seedling steps
1, breeding anvil: Select fresh, large longan seeds for breeding anvil. There are two ways to raise an anvil:
(1) Drilling method, 1 seed per 4 cm.
(2) Spreading method, after sowing seed, until seedlings grow 2-3 true leaves with seed transplantation, every 4 cm species. Fertilization is mainly human excrement, diligently applied thinly. Per acre with 50 kg of manure water mixed with ammonium bicarbonate 100-150 grams, applied 2-3 times a month, to promote seedling growth.
2. Scion collection: Selecting the optimized longan mother tree branches for scion, basic corkation of the epidermis (red-green), buds to spit out 0.5 cm long shoots is the most appropriate, this is the key to ensure a high survival rate of grafting. Spring picks up with last year's autumn shoots, and then picks up the spring shoots.
3. Grafting method: Longan seedlings with a diameter of 0.3 cm or more should be selected as rootstocks. Apply enough water and fertilizer 1 month before grafting. Cut 7-8 cm away from the ground. After 4-5 days of grafting, graft stocks will be accumulated. The organic nutrients, as well as the evaporation of excess water in the plants, are an important part of ensuring the survival of grafting. First, cut 45 bevels from the middle out of the top of the two rootstocks, then use a knife to cut a knife from the bottom to the top with a small amount of xylem, about 3-4 cm long; 2 buds, cut into "V" shape at the lower end of the scion, 3 cm long; then place the scion in the middle of the two anvils, aligning the formation layer, grasping the two anvils and scion by hand, and binding the grafting site with a small string; finally using nylon The film tape is wound from bottom to top to expose the buds.
Grafted seedling management
1. Loosening: 50-60 days of grafting in the spring, loosening when the seedling is 7 centimeters taller, 40-50 days of grafting in the autumn, and relaxing when the seedling height is more than 10 centimeters. Pre-synthetic nylon film tape, loose rope after 15 days, loosening is conducive to the transmission of water and inorganic salts, to avoid the occurrence of nodules.
2, wiping tip: If the cue spit 2 buds should be wiped out, leaving 1 shoots continue to grow. When the seedling height is 40 centimeters, it is topped to allow it to draw 2-3 branches. At the same time, the axillary buds on the rootstock should often be removed to promote the robust growth of the seedlings.
3. Fertilization: mainly human fecal urine, supplemented by chemical fertilizer, diligently applied thinly, applied twice a month. In case of rain, compound fertilizer is the main ingredient and is applied.
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