Chestnut tree adopts high grafting technology, which can not only improve varieties, restore tree vigor, but also achieve early results and achieve high yields. There are two main methods for changing the crown of a chestnut tree:
1, sapling long buds. It is usually done in spring or autumn. That is, on the branches of the saplings of actual seedlings, a slightly wooden shield-shaped bud is applied, and it can be formed in that year. The specific approach is to use full-fledged cultivars of the current year's or previous year's fine varieties, cut both ends, and choose to leave 4-5 buds in the middle to be buds. About 1 centimeter above each bud, cut it slightly with a budding knife and cut it down to 2 cm under the bud. Then cut a knife and turn it into a shield bud. The saplings of the young saplings were selected to have shoots about 2 cm thick. At the smooth bark, a “T†shape was cut with a bud, and the cross was about 1 cm long and about 3 cm long. Then, the skin was peeled off gently with a handle, and the buds were The piece is slowly inserted into the incision so that the incision of the rootstock is anastomosed and budded, then tied and protected by wax.
2, adult trees long high pick. Mainly used for big trees to change the inferior. To increase the ratio of long to high trees, fully utilize the original skeleton, and keep the length of the main branch and lateral branches as short. Generally, the length of the branches should be within 5 cm. The adult tree can receive 20-30 heads, and the tree can be increased. To more than 100, in order to achieve early formation, restore the crown, increase production purposes. Multi-headed high inserts or peelings are better.
3, management after grafting (1) check the survival: touch the buds of the petiole by hand, falling into a symbol of survival at one touch, all the survival of the bud is the same color, otherwise it is not alive, can make up.
(2) Disarming: In the 15-20 days after budding, the ligatures should be released in time to promote its growth. At the same time, when the shoots are to grow to 20 cm in length, new shoots should be erected to prevent the wind from breaking.
(3) In addition to pest control: In order to ensure the growth of new shoots, it is necessary to cut axillary buds that germinate on the rootstock in time. Chestnut larvae of the chestnut often endanger the healing tissues at the interface, and 90% of trichlorfon 1000-1500 times should be sprayed as soon as possible for prevention and treatment.
1, sapling long buds. It is usually done in spring or autumn. That is, on the branches of the saplings of actual seedlings, a slightly wooden shield-shaped bud is applied, and it can be formed in that year. The specific approach is to use full-fledged cultivars of the current year's or previous year's fine varieties, cut both ends, and choose to leave 4-5 buds in the middle to be buds. About 1 centimeter above each bud, cut it slightly with a budding knife and cut it down to 2 cm under the bud. Then cut a knife and turn it into a shield bud. The saplings of the young saplings were selected to have shoots about 2 cm thick. At the smooth bark, a “T†shape was cut with a bud, and the cross was about 1 cm long and about 3 cm long. Then, the skin was peeled off gently with a handle, and the buds were The piece is slowly inserted into the incision so that the incision of the rootstock is anastomosed and budded, then tied and protected by wax.
2, adult trees long high pick. Mainly used for big trees to change the inferior. To increase the ratio of long to high trees, fully utilize the original skeleton, and keep the length of the main branch and lateral branches as short. Generally, the length of the branches should be within 5 cm. The adult tree can receive 20-30 heads, and the tree can be increased. To more than 100, in order to achieve early formation, restore the crown, increase production purposes. Multi-headed high inserts or peelings are better.
3, management after grafting (1) check the survival: touch the buds of the petiole by hand, falling into a symbol of survival at one touch, all the survival of the bud is the same color, otherwise it is not alive, can make up.
(2) Disarming: In the 15-20 days after budding, the ligatures should be released in time to promote its growth. At the same time, when the shoots are to grow to 20 cm in length, new shoots should be erected to prevent the wind from breaking.
(3) In addition to pest control: In order to ensure the growth of new shoots, it is necessary to cut axillary buds that germinate on the rootstock in time. Chestnut larvae of the chestnut often endanger the healing tissues at the interface, and 90% of trichlorfon 1000-1500 times should be sprayed as soon as possible for prevention and treatment.
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