JP5442068B2 - Tree recovery method - Google Patents

Description

  The present invention relates to a method for restoring a tree, and more particularly to a method capable of reliably restoring a tree having a remarkable decline.

  Trees (including fruit trees) lose their vigor due to various factors such as planting conditions, excessive pruning, continuous use of chemical fertilizers, trampling pressure, damage caused by pests, and abnormal weather.

  Such trees are generally considered difficult to recover in a short period of time, but huge trees and old trees such as temples and shrines are sometimes regarded as the object of faith, and they are restored. There are many requests to leave.

  Therefore, loosen the soil around the tree, mix with peat moss and peat, promote root growth and restore the tree (Patent Document 1), lift the tree with the tree declined by a crane, etc. A method to restore the vigor of trees by introducing materials for restoring vigor on the side (Patent Document 2), and adsorbing peat that has sufficiently absorbed moisture into the hollow space of trees to grow adventitious roots A method for restoring the tree vigor (Patent Document 3), and the like have been proposed.

JP 2006-109771 A JP 2009-291116 A JP 2002-315435 A

  However, although the methods described in Patent Documents 1 and 2 have a recovery effect when the degree of decline of the tree is light, it is difficult to restore the tree when the decline of the tree is significant.

  On the other hand, in the method described in Patent Document 3, when the decline of the tree is caused by the soil becoming hard, the effect of restoring the tree is small.

  In view of such a problem, an object of the present invention is to provide a method for restoring a tree force that can reliably recover a tree force that has declined significantly.

  Therefore, the method for recovering the vigor according to the present invention improves the soil by pruning roots of trees and fruit trees and mixing the particles of the electrical conductor into the soil at the assumed rooting location and / or the expected extension location of the new root. In addition, the present invention is characterized in that a low current high voltage is applied to the improved soil to give an electrical stimulus, the mycorrhizal fungi are grown to form mycorrhiza, and the root is restored by promoting rooting.

  Symbiotic microorganisms such as VA mycorrhizal fungi are known to absorb the fertilizer components in the soil and give them to the host, thereby improving the resistance to soil diseases and enhancing the water absorption ability. In view of this, a greening material has been proposed in which symbiotic microorganisms are supported at a high density on a porous carbide or the like to promote greening (Japanese Patent Laid-Open No. 2007-74986). It wasn't.

  One of the features of the present invention is pruning the root of the tree, improving the soil by mixing the particles of the electrical conductor into the soil where rooting is expected and / or the soil where elongation of the new root is expected, The improved soil is subjected to high voltage electrical stimulation to promote mycorrhizal fungal growth, spore germination, hyphal differentiation and mycorrhiza formation.

  As a result, new roots are forcibly rooted, so that the tree can be reliably recovered and maintained even with respect to the trees whose trees have declined significantly. In this case, if necessary, the tree species forming the fruiting body distributes the spore liquid of the fruiting body symbiotic with the tree species to the construction range, and in other cases, mycorrhizal fungi materials (for example, JP 2007-479865 A, It is recommended to take measures such as adding soil to the mixed soil, loosening the hardened soil, and burying a vent pipe such as split bamboo.

  While energization of the soil is discharged into the ground and efficient energization is difficult, energizing a high voltage and high current may damage the mycorrhizal fungi, mycorrhiza, or tree roots, accelerating the decline of the tree. There is. In the present invention, the particles of the electric conductor are mixed with the soil, and electrical stimulation is applied to the mycorrhizal fungi, mycorrhiza or tree roots by a high voltage and low current of a necessary size.

  According to the experiments of the present inventors, the applied high voltage with a low current is preferably a low voltage within a range of 10 mA to 120 mA and a high voltage within a range of 10,000 V to 100,000 V, and the application time is set to be 0.1. It was confirmed that the time within the range of 3 to 60 seconds was good. Moreover, the frequency | count of application should just be 1 time or more per month.

  Here, the voltage is set within the range of 10,000V to 100,000V because the electrical stimulation is too small if the voltage is less than 10,000V, and the effect is not obtained. If the voltage exceeds 100,000V, the electrical stimulation is strong. This is because it is too counterproductive. The reason why the current is set to a current within the range of 10 mA to 120 mA is that if the electrical stimulation is less than 10 mA, the electrical stimulation is too small to obtain an effect, and if it exceeds 120 mA, the electrical stimulation is too strong to have an adverse effect. The application time was set in a range of 0.3 to 60 seconds in consideration of the strength of electrical stimulation.

  As a method of application, it is preferable to embed a plurality of electrodes in the improved soil and apply a high voltage between the electrodes. The electrical conductor may be a water-improved soil improvement material, but pulverized coal, granular charcoal, conductive ceramic charcoal, etc. are porous and serve as a mycorrhizal fungus carrier. Or it is good to use the mixture.

  Here, the relationship between the tree species and the symbiotic fungi is as follows: pine, cypress, walnut, willow, birch, beech, elm, rose, leguminous, croaker, maple, linden, The species of Myrtaceae and Azalea are symbiotic with ectomycorrhizal fungi, but maple and myrtaceae are also symbiotic with arbuscular mycorrhizal fungi.

  Also, excluding Brassicaceae, Cyperaceae, Anazaceae, and Tedaceae, Rose, Cypress, Cryptomeriaceae, Chileaceae, Ginkgoaceae, Persimmonaceae, Elmaceae, Mulberry, Mocklenaceae, Camphoraceae, Toberaceae, Citrus Species of the family, Euphorbiaceae and Camelliaaceae coexist with arbuscular mycorrhizal fungi.

  The rhododendron resin is symbiotic with the ericoid mycorrhizal fungi, but among the rhododendrons, the dolphin azalea is symbiotic with the arbuscular mycorrhizal fungus.

  Tree species of the genus Alder, Prunus, Gummi, and Mocus are symbiotic with Francia. Alder tree species coexist with algal mycorrhizal alder fungus. Tree species of the genus genus are said to be symbiotic with arbuscular mycorrhizal fungi, and tree species of the genus Gummi and genus Prunus are also symbiotic with arbuscular mycorrhizal fungi.

  Leguminous resin is symbiotic with rhizobial but also arbuscular mycorrhizal. Cycadaceae tree species coexist with cyanodocteria, but also with arbuscular mycorrhizal fungi.

It is a figure which shows typically preferable embodiment of the tree recovery method which concerns on this invention. It is a figure which shows typically an example of the construction method. It is a figure which shows the other example of the construction method typically. It is a figure which shows typically the other example of the construction method typically. It is a figure which shows typically the application method of the low current high voltage in the case of forming mycorrhiza inside a root. It is a figure which shows typically the application method of the low current high voltage in the case of forming mycorrhiza on the surface of a root.

  Hereinafter, the present invention will be described in detail based on specific examples. FIG. 1 schematically shows a preferred embodiment of the tree recovery method according to the present invention. When restoring the tree of old trees or giant trees, the root 10 of the tree is pruned and cut at an appropriate location 12 as shown in FIG. In the figure, reference numeral 11 denotes a pruned root. Next, pulverized coal, granulated coal, conductive ceramic charcoal or a mixture thereof and soil are mixed, and the pruned roots are excavated and backfilled with charcoal mixed soil to improve soil 13 and improved soil 13, the electrodes 14 and 14G are embedded.

  Next, a high voltage in the range of 10,000 V to 100,000 V with a low current in the range of 10 mA to 120 mA is applied to the electrode 14 between the electrodes 14 and 14G for a time in the range of 0.3 second to 60 seconds. Applied to the root 10, mycorrhiza and mycorrhizal fungi 15, mycelium 16 and spores 17. Apply electrical stimulation at least once a month. Then, the new root 18 grows from the remaining healthy root 10, and the nutrients and water are surely absorbed through the mycorrhizal fungus 15 in which the new root is symbiotic, and is given to the branches and leaves through the trunk. Therefore, the declining tree will definitely recover and the tree will be maintained.

  Here, the improved soil 13 may be spot-filled back as shown in FIG. 2, may be back-filled as shown in FIG. 3, or suitable as shown in FIG. You may back-fill to the arbitrary shape of an area.

  In FIG. 1 (b), the electrode 14 and the electrode 14G may be embedded in reverse to stimulate the fine root, mycorrhiza, and mycelium from the root.

  In addition, when forming mycorrhiza, such as arbuscular mycorrhizal fungi, in the root, as shown in FIG. 5, the ground electrode 14G is embedded so as to contact the root 10, while ectomycorrhizal fungi, etc. When the root is formed on the surface of the root 10, as shown in FIG. 6, a method of embedding the ground electrode 14 </ b> G in the improved soil 13 may be performed in combination.

  Further, in FIG. 5, both the electrode 14 and the electrode 14G are embedded in the improved soil in which the mycelium near the root extends, and the mycelium is broken by electrical stimulation, becomes a semi-spore, and only the mycelium fragment grows. A mycelium or fruit body primordium is made.

  In the above example, the case of a huge tree or an old tree with a decline in vigor was described, but it was confirmed that the method of the present invention can similarly recover and maintain the vigor of peaches, pears, apples, mandarin oranges, and chestnuts in orchards. .

10 Root 11 Pruning Root Position 13 Mixed Soil 14, 14G Electrode 15 Mycorrhiza / Mycorrhiza 16 Mycelium 17 Spore 18 New Root

Claims (5)

  The roots of trees and fruit trees are pruned and rooted, and the soil is improved by mixing the particles of electrical conductors in the soil where the roots are expected and / or where the new roots are expected to be extended. A method for recovering tree power, which is applied to apply electrical stimulation to grow mycorrhizal fungi to form mycorrhiza and promote rooting, thereby restoring the tree power.   2. The tree restoration method according to claim 1, wherein the applied high voltage with a low current is a high voltage within a range of 10,000 V to 100,000 V with a low current within a range of 10 mA to 120 mA.   3. The tree recovery method according to claim 2, wherein the low current and high voltage are applied for a time within a range of 0.3 to 60 seconds.   2. The tree recovery method according to claim 1, wherein the electrical conductor is charcoal.   The tree recovery method according to claim 1, wherein a plurality of electrodes are embedded in the improved soil and a high voltage is applied.

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