CN1263369C

CN1263369C - Large branch riding and layering pruning method for yellow oak as street tree

Info

Publication number: CN1263369C
Application number: CN 200410081308
Authority: CN
Inventors: 梁德富
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2004-11-23
Filing date: 2004-11-23
Publication date: 2006-07-12
Anticipated expiration: 2024-11-23
Also published as: CN1608423A

Abstract

The present invention relates to a large branch riding and layering pruning method for yellow oak as street trees. Because the tree crowns of the yellow oak as the street trees are large and short, the growth velocity is very fast, bottom layer branches are gradually saggy and block ways, the bottom layer branches need to be trimmed in real time in order to maintain smooth roads; large branches trimmed in a conventional method are processed as garbage, but the present invention can change the large branches which only can be used as the garbage originally into spanning trees which can be directly used as the street trees to plant by the large branch riding and layering pruning method for yellow oak as street trees. The present invention not only omits the seedling cultivating time for 5 to 8 years but also changes waste into valuable, and the present invention protects the environment and can also generate enormous economic benefits.

Description

Street yellow oak large branch riding type layering pruning method

One, technical field

The present invention relates to a kind of branch pruning method, particularly relate to a kind of pruning method of setting huge branch as the yellow square rafter of street tree.

Two, background technology

The characteristics of yellow square rafter tree tree crown are roomy and short, because the tree crown growth rapidly, its bottom limb is sagging because of the weight of branch hat, thereby influences the unobstructed of path, therefore needs regularly to prune.Present known street tree is pruned, and all is that the branch that should prune simply amputates, and the branch under the saw is then as garbage disposal.For the very swift and violent yellow square rafter tree of growth rate, the very thick shape of the branch under at every turn repairing, wherein the diameter of considerable part branch and tree crown have been equivalent to a Cheng Shu.Therefore with it as garbage disposal, be not only the waste of resource, more distinct issues are that the transportation and the processing of branch class rubbish all are headachy problems, reason is that this rubbish volume is big and in light weight, and it is very inconvenient to load and transport, the cost of transportation height, during processing if with its burning, the meeting contaminated air, if adopt heap to bury, a large amount of places can account for again.

For the air layering of branch, should be general knowledge well known to those skilled in the art.But present known air layerage all is to carry out on the tiny branch that is confined to give birth to one or two years, and it only is at the seeds that are difficult for surviving with cuttage, can improve its survival rate with this method, and therefore, the air layering breeding all is to replenish as a kind of of cuttage.Why is air layerage all to give birth on the tiny branch in one or two years to carry out usually? reason is that the operator will wrap a certain amount of earth at the band girdle place of branch, the humidity that keeps these earth in the 2～March that must grow up at the new root of branch simultaneously, for reaching this purpose, people normally pinch on branch with a sposh that sticks together duck's egg or goose egg size and wrap with film.For the huge branch of diameter at 8～20 centimetres, required earth more than 20kg, properly and easily wraps in many like this earth on the branch, and remains its suitable humidity at least during press strip, not by special method, is difficult to realize.

Three, summary of the invention

The objective of the invention is provides a kind of street yellow oak large branch riding type layering pruning method to society, and realizes the air layering of huge of yellow square rafter tree smoothly by this method, eliminates a large amount of rubbish that cause because of pruning simultaneously to greatest extent.

The object of the present invention is achieved like this: during 4～July, for the huge branch of yellow square rafter tree to be pruned, a mark is made in a selected position of being convenient to operate on limb earlier, and be the mid point of band girdle width with this mark, it is 5～10 centimetres ringing that limb is made a width, and thoroughly strike off the cambium on xylem surface with blade part, use the polypropylene woven bag that has plastic film to make lining of 35 * 90cm to load onto 20～30kg earth again, the humidity of earth can be agglomerating to clutch, can loosing of touching is degree, tightening the horizontal band girdle mouth that rides over limb of sack relief sack reaches with the upper part, then upwards raise woven bag, on woven bag, scratch the openning that long a 30～35cm grows and penetrate film with cutter, the position of openning occupies the cross central line of sack downside, retract the woven bag and the film on openning both sides with hand, after allowing bag interior earth miss 2～3kg, encase this limb, bag interior earth is fully contacted with the bark of band girdle mouth upper edge, and make the both sides mouth of sack openning also overlapping along offside junction at trunk, allow place, band girdle mouth lower edge have the wide xylem of 2cm to be exposed in the air, with the 4th rope woven bag laterally is fastened onto on band girdle mouth and the above limb around band girdle mouth again, through 2～March, as fine as a spider's web fibrous root tightly is fixed on the earth in the bag on the limb in the woven bag, this moment can be sawed-off with limb from the band girdle mouth lower edge, put down gently in ground, remove its 1/3 tree crown, and promptly can be used as into the tree field planting after removing whole woven bags and film with scissors.

Owing to adopt technique scheme, can receive following remarkable result:

1, owing to the branch that is used for press strip is perennial huge branch, can directly do the street tree field planting after the intercepting, compare, can save the seedling raise period in 5～8 years with conventional air layering or cuttage and seedling culture.

2, under the situation of identical trunk diameter, yellow square rafter tree through growing seedlings and grow up to for many years, the main distributed areas of its fibrous root have been transferred to and the corresponding to annular region of crown diameter, when taking transplanting, can not allow root with soil block greatly to the size identical with tree crown, therefore must lose most fibrous roots.And the yellow square rafter tree that this law obtains, its fibrous root accounts for more than 90% of root total amount, and preserves from.Therefore not only survival rate was up to 100% after the latter planted, and growth rate that the more important thing is the latter after surviving is also far above the former.

3, the huge branch of yellow square rafter tree under repairing according to a conventional method is the rubbish that is difficult to dispose, and the present invention becomes it into the Cheng Shu that can directly do the street tree field planting, has not only reduced rubbish and disposal cost, has protected green resource again, also can produce huge economic benefit.

Claims

1, a kind of street yellow oak large branch riding type layering pruning method, comprise band girdle to huge branch, remove cambium, the pack opening, wrapping, saw cuts, repair tree crown, go bag and 8 steps of field planting, it is characterized in that: during 4～July, for diameter to be pruned the huge branch of yellow square rafter tree at 8-20cm, a mark is made in a selected band girdle position on limb earlier, and be the mid point of band girdle width with this mark, it is 5～10 centimetres ringing that limb is made a width, and thoroughly strike off the cambium on xylem surface with blade part, use the polypropylene woven bag that has plastic film to make lining of 35 * 90cm to load onto 20～30kg earth again, tightening the horizontal band girdle mouth that rides over limb of sack relief sack reaches with the upper part, then upwards raise woven bag, on woven bag, scratch the openning that long a 30～35cm grows and penetrate film with cutter, the position of openning occupies the cross central line of sack downside, retract the woven bag and the film on openning both sides with hand, after allowing bag interior earth miss 2～3kg, encase this limb, bag interior earth is fully contacted with the bark of band girdle mouth upper edge, and make the both sides mouth of sack openning also overlapping along offside junction at trunk, allow place, band girdle mouth lower edge have the wide xylem of 2cm to be exposed in the air, with the 4th rope woven bag laterally is fastened onto on band girdle mouth and the above limb around band girdle mouth again, through 2～March, from the band girdle mouth lower edge that limb is sawed-off, put down gently in ground, remove its 1/3 tree crown, and promptly can be used as into the tree field planting after removing whole woven bags and film with scissors.