A kind of grafting method for the rejuvenation of old chestnut trees

Abstract

The invention provides a technology for performing updating and grafting head-transplanting on Chinese chestnut tree body branches and trunks by promoting latent buds to germinate shoots, and the technology aims to solve the problems that aged Chinese chestnut trees are low in yield, and rejuvenation is difficult. The technology optimizes varieties of the aged trees, dwarfs and adjusts tree body structures and improves the fruit set, and finally the purposes of rejuvenation of the aged trees and high yield are achieved.

Description

[0001] Technical field:

[0002] The invention relates to a method for pruning and grafting fruit trees, in particular to a method for grafting rejuvenation of old chestnut trees.

[0003] Background technique:

[0004] Chestnut tree is a kind of perennial tree. The natural perennial tree is tall, and its fruiting ability will be significantly reduced after the tree is older than 40 years. Management methods such as pruning and grafting are also difficult and difficult to operate. The yield per unit area is very low and the economic benefits are poor. At present, there is a lack of effective management and rejuvenation methods for old chestnut trees.

[0005] Invention content:

[0006] The purpose of the invention of this patent is to solve the problems of low yield and difficult rejuvenation of old chestnut trees. This invention provides a technique for renewing chestnut tree branches and grafting and replacing heads by promoting the germination of new branches from hidden ...

Examples

Embodiment Construction

[0029] The present invention is described in detail below in conjunction with embodiment. The implementation example is as follows:

[0030] Implementation location: Xinlizhuang, Qianxi County, Hebei Province

[0031] Implementation time: from March 2009 to September 2011

[0032] Tree profile: 10 natural chestnut trees, location: sunny slope and semi-shady slope; tree age: 40-60 years; fixed trunk height: about 1.5m; tree vigor is weak, with an annual output of 2-4 catties.

[0033] First year: Trim the tree on March 16. Thin out the main trunk in the center, and keep 2 to 3 trunks in the periphery; and thin out 1 / 2 to 1 / 3 of the secondary trunks. The position of the secondary trunks should be close to the center of the crown first, and the interior of the trunk should be basically guaranteed after thinning. (that is, the location where cryptobud germination is processed) the time of direct sunlight is not less than 3 hours.

[0034] On April 15, the skin of the old chest...

[0001] Technical field:

[0002] The invention relates to a method for pruning and grafting fruit trees, in particular to a method for grafting rejuvenation of old chestnut trees.

[0003] Background technique:

[0004] Chestnut tree is a kind of perennial tree. The natural perennial tree is tall, and its fruiting ability will be significantly reduced after the tree is older than 40 years. Management methods such as pruning and grafting are also difficult and difficult to operate. The yield per unit area is very low and the economic benefits are poor. At present, there is a lack of effective management and rejuvenation methods for old chestnut trees.

[0005] Invention content:

[0006] The purpose of the invention of this patent is to solve the problems of low yield and difficult rejuvenation of old chestnut trees. This invention provides a technique for renewing chestnut tree branches and grafting and replacing heads by promoting the germination of new branches from hidden ...

Examples

Embodiment Construction

[0029] The present invention is described in detail below in conjunction with embodiment. The implementation example is as follows:

[0030] Implementation location: Xinlizhuang, Qianxi County, Hebei Province

[0031] Implementation time: from March 2009 to September 2011

[0032] Tree profile: 10 natural chestnut trees, location: sunny slope and semi-shady slope; tree age: 40-60 years; fixed trunk height: about 1.5m; tree vigor is weak, with an annual output of 2-4 catties.

[0033] First year: Trim the tree on March 16. Thin out the main trunk in the center, and keep 2 to 3 trunks in the periphery; and thin out 1 / 2 to 1 / 3 of the secondary trunks. The position of the secondary trunks should be close to the center of the crown first, and the interior of the trunk should be basically guaranteed after thinning. (that is, the location where cryptobud germination is processed) the time of direct sunlight is not less than 3 hours.

[0034] On April 15, the skin of the old chest...