CN101356888B

CN101356888B - Highbush blueberries winter-proofing method

Info

Publication number: CN101356888B
Application number: CN2008100132382A
Authority: CN
Inventors: 王贺新; 乌凤章; 陈英敏
Original assignee: Dalian University
Current assignee: Dalian University
Priority date: 2008-09-12
Filing date: 2008-09-12
Publication date: 2010-11-10
Anticipated expiration: 2028-09-12
Also published as: CN101356888A

Abstract

The invention relates to a high-bush blueberry winterproofing method. The method is as follows: 0.12mm of black plastic film is made into a cylindrical strip with the diameter to be 450mm; the strip is cut off according to the tree height when in use, when autumn changes into winter, the blueberry branches are bunched by nylon ropes from bottom to top firstly, then the blueberry branches are sheathed with a cut plastic cylinder, the lower part of the cylinder is contacted with the pre-leveled ground and folds 10-15cm outwards, and is compacted with earth; an opening at the upper end of the plastic cylinder is tightened by the nylon ropes, finally, a layer of straws is wrapped outside the plastic from bottom to top, then tightened by the nylon ropes. In the next spring, the straws and the film are removed from the trees before flower buds sprout, collected, stored in a place away from light and rain for reuse in the next year. The method has the beneficial effects that the black film is low in light transmittance, and plays the roles in heat insulation and moisturizing, and the straws bunched outside can regulate the change of diurnal temperature, thus ensuring the wintering safety of blueberries, and the cost is lower.

Description

A kind of high clump blueberry Winter protection method

Affiliated technical field

The invention belongs to forest culture technique field, relate to a kind of high clump blueberry Winter protection method, this method is applicable to the high clump of northern area blueberry cultivation.

Background technology

The not too cold-resistant seeds of northern area winter severe cold, drying, windy, part suffer freeze injury or cause physiological drought to early spring in the winter time, are commonly called as stripping.Make local branch dried-up, gently then can cause trees part branch to be injured, heavy then can cause the death of trees complete stool.Blueberry originates in the North America, relies on the accumulated snow winter protection under the nature.The northern area of China is avenged winter less, exposes in air very easily spike top stripping naturally, and No kernels or seeds are gathered, as in a year of scarcity dried-up next year for a large amount of buds, serious restriction the development of blueberry project.At present, the method for burying soil is mainly adopted in the blueberry winter protection, and this method cost is low, effective, the suitable utilization in the winter protection of short clump blueberry.If the soil burial winter protection method is used in high clump blueberry, because the tree body is bigger, winter protection is time-consuming, and ditching fetches earth and easily cause the root system freeze injury, and careless slightly meeting makes the blueberry plant injured or fracture when burying soil or removing soil.And bury soil too early, can go rotten because of soil temperature height, high humidity cause branch and bud; Bury soil and cross soil freezing then in evening, the inconvenience or cover and do not cause freeze injury etc. sternly easily of fetching earth.And other method is as building plastic canopy or cold canopy, and winter protection is effective, but cost is higher, and humidity deficit also can stripping in the canopy sometimes.Select a kind of Winter protection method of economical and efficient that blueberry cultivation is seemed very important for this reason.In other plant Winter protection method, Wang Xinquan etc. when the grape winter protection with branches and tendrils with the direct motion of grape branches and tendrils to towards a direction undercarriage, press 1 strain every 1 strain, branches and tendrils are straight, tie up, spread a small amount of corn stalk (or wheat straw), leaf, weeds etc. in the above, after the covering, select common booth plastic film for use, be cut into suitable length and width degree, cover on the plant, real with soil pressure all around.Do not cover plastic film with only covering broken corn stalk or wheat straw and compare, do not have behind the overlay film and drain the phenomenon generation, show that plastic film covers except that the winter protection effect is arranged, and also has anti-effect of draining.Yu Yanzhong adopts earlier the branches and tendrils with undercarriage to cover one deck soil, the grass of lid layer 20～25cm then, and the method for last lid layer plastic film is carried out the grape winter protection ^[2]Above-mentioned two kinds of method operations are many, complicated operation, and material therefor is many, and cost is higher.Zhao Yuanyuan adopts trunk to wrap up in the winter protection in winter that careless method is carried out ornamental trees and shrubs ^[3], it is the blueberry winter protection of main purpose that the method is not suitable for to preserve moisture.

Summary of the invention

Time-consumingly in the existing blueberry Winter protection method take a lot of work, damage trees and expensive problem in order to overcome, the invention provides a kind of simple to operate, with low cost, a kind of high clump blueberry Winter protection method that winter protection is respond well.

The technical solution adopted for the present invention to solve the technical problems is, tailor-made in advance plastic sack is made the tubular band that diameter is 450mm with the anti-aging plastic film of the black of 0.12mm, and the height according to trees during use blocks.When the time of the year when autumn changes into winter, at first the blueberry branch is tied up with nylon rope, by carrying out in proper order from down to up, put the plastic cylinder that blocks then, the cylinder bottom contacts with the ground of leveling in advance and outwards rolls over 10～15cm, gets final product with soil pressure is real, and the upper end open of plastic cylinder is tightened with nylon rope, outside plastic foil, wrap up one deck straw at last from bottom to top, use the nylon rope tighten.Spring in next year, remove straw and film from setting before bud is sprouted, and collect straw and film, to place the lucifuge place of keeping off the rain and preserve, next year is reused again, general available 4 years.Used black thin film light transmittance is low, avoids the injury of sunlight direct projection to trees, plays insulation, moisture-keeping function simultaneously, and film bundlees straw outward and can shade and regulate the acute variation of sunlight direct projection plastic foil temperature behind the bagging.

The invention has the beneficial effects as follows, the black thin film light transmittance is low, avoid heating up in the sunlight direct projection tube to the injury of trees, play insulation, moisture-keeping function simultaneously, tying up straw outward can shade and regulate the acute variation of diurnal temperature in the bagging back pkt., guarantee the blueberry safe overwintering, the rare withered phenomenon of branch, cost is lower.

Embodiment

The invention will be further described below in conjunction with embodiment:

Make the tubular band that diameter is 450mm with the black plastic film of 0.12mm, block into the cylinder of 150～200cm during use according to the height of trees.At first the blueberry branch is tied up with nylon rope in late November to early December, by carrying out in proper order from down to up, put the plastic cylinder that blocks then, the cylinder bottom contacts with the ground of leveling in advance and outside folding 12cm, get final product with soil pressure is real, the upper end open of plastic cylinder is tightened with nylon rope, wraps up one deck straw at last outside plastic foil from bottom to top, uses the nylon rope tighten.Before spring in next year, bud was sprouted, the area, Dalian was removed straw and film in late March to early April from tree, and collected straw and film, placed the lucifuge place of keeping off the rain and preserved, and next year is reused again.By every mu of 333 strains of planting, the height of tree is that 1.5m calculates 2 yuan of each plastic film cylinder, to use the conversion of average 4 years of life-span, every mu needs 167 yuan of thin-film material expenses, straw curtain 1 * 2m, each 1.2 yuan, service life, every mu cost with 133 yuan, 30 yuan/day of labour costs by conversion in 3 years, by finishing 2 mu of calculating for each person every day, 15 yuan of every mu of expenses, other fees are 5 yuan, add up to 320 yuan of every mu of expenses.

Claims

1. one kind high clump blueberry Winter protection method, it is characterized in that, this method is: make the tubular band that diameter is 450mm with the black plastic film of 0.12mm, the height of time spent according to trees blocks, when the time of the year when autumn changes into winter, at first the blueberry branch is tied up with nylon rope, by carrying out in proper order from down to up, put the plastic cylinder that blocks then, the cylinder bottom contacts with the ground of leveling in advance and outwards rolls over 10～15cm, and real with soil pressure, the upper end open of plastic cylinder is tightened with nylon rope, outside plastic foil, wrap up one deck straw at last from bottom to top, use the nylon rope tighten; Spring in next year, remove straw and film from setting before bud is sprouted, and collect straw and film, to place the lucifuge place of keeping off the rain and preserve, next year is reused again.

2. a kind of high clump blueberry Winter protection method according to claim 1 is characterized in that, the described time of the year when autumn changes into winter be late November to early December, be that late March is to early April spring in next year.