Method for realizing rapid core material formation of dalbergia odorifera by utilizing physical stress effect

Abstract

The invention provides a method for realizing rapid core material formation of dalbergia odorifera by utilizing a physical stress effect, the method is based on a device for realizing rapid core material formation of dalbergia odorifera by utilizing the physical stress effect, and the rapid core material formation device comprises a physical stress unit, a temperature change regulation and control unit and an intelligent control unit; according to the rapid core material forming method, rapid core material forming of dalbergia odorifera is achieved through the physical stress effect, core material cambium cells are induced to be directionally differentiated through composite physical-temperature change stress, the natural process of tens of years is shortened to 3-5 years, and the economic benefits of a man-made forest are remarkably improved; stress intensity and duration are accurately regulated and controlled, wood cracking or decaying caused by excessive damage is avoided, and the core material density and aroma components are basically consistent with those of traditional natural formation; a pure physical means (without chemical agents) is adopted, vibration and temperature change parameters conform to the physiological tolerance range of trees, and ecological balance is not damaged; through real-time feedback of a sensor and automatic optimization of a processing strategy, the method is suitable for dalbergia odorifera individuals of different tree ages and diameters at breast height, and the generalization performance is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of forest cultivation and wood modification, and particularly relates to a method for realizing rapid core formation of Dalbergia odorifera by using physical stress effect. BACKGROUND

[0002] Dalbergia odorifera (commonly known as “Hainan yellow rosewood”) is a unique and rare redwood in China. The core material of Dalbergia odorifera is rich in active ingredients such as flavonoids and tannins, has unique aroma, dense texture and medicinal value, and has a very high market price. However, the formation of natural Dalbergia odorifera core material depends on the slow accumulation of secondary metabolism during the natural aging process of the tree (usually tens of years or even hundreds of years), and is significantly affected by environmental factors. The proportion of core material of artificial forest or fast-growing plant is low and the quality is unstable, which seriously restricts the sustainable utilization of resources and the high-quality development of the industry.

[0003] Traditional methods for promoting core material formation (such as ring stripping and wounding) have problems such as large damage, easy to cause diseases, uncontrollable effect, etc.; chemical reagent induction may pollute the environment and affect the safety of wood.

[0004] Research has found that moderate physical stress (such as mechanical stimulation, light / dark alternation) and temperature gradient change can accelerate the synthesis and deposition of core material specific components (such as dalbergione and tannin) by activating the defense mechanism of the tree, but the existing technology is mostly at the laboratory stage, and lacks systematic and scalable application of device support. SUMMARY

[0005] The present application provides a method for realizing rapid core formation of Dalbergia odorifera by using physical stress effect, which promotes the formation of Dalbergia odorifera core material in a relatively short time, improves the efficiency of core material formation, ensures less damage to the tree, is relatively simple to operate, does not produce environmental pollution, induces core formation layer cell directional differentiation by composite physical-temperature change stress, compresses the natural process of tens of years to 3-5 years, significantly improves the economic benefit of artificial forest, accurately controls the stress intensity and time, avoids wood cracking or decay caused by excessive damage, and the core material density, aroma components and traditional natural formation are basically the same. Pure physical means (no chemical reagents), vibration and temperature change parameters meet the physiological tolerance range of the tree, do not destroy the ecological balance, real-time feedback through sensors, automatic optimization of processing strategy, suitable for Dalbergia odorifera individuals of different ages and diameters.

[0006] To achieve the purpose of the present application, the technical scheme adopted is: A method for realizing rapid core formation of Dalbergia odorifera by using physical stress effect, which is based on a device for realizing rapid core formation of Dalbergia odorifera by using physical stress effect. The rapid core formation device comprises a physical stress unit, a temperature change control unit and an intelligent control unit.

[0007] As preferred, the physical stress unit comprises root vibration modules and trunk ring pressure modules; the temperature change regulation unit comprises root zone cold and hot alternating systems and canopy local high temperature modules; the intelligent control unit comprises an integrated PLC controller, root vibration sensors, soil temperature and humidity sensors, trunk ring pressure sensors, trunk diameter micro-change sensors, environmental light intensity sensors and canopy temperature and humidity sensors.

[0008] As preferred, the method specifically comprises the following steps: S1, device installation: Select Dalbergia odorifera plants with a breast diameter of 8-12 cm, healthy and free of pests and diseases, and sufficient nutrient supply, and bury 4-12 root vibration modules in a ring at a distance of 30-50 cm from the base of the trunk. The buried distance of the root vibration modules is 5-30 cm, and the buried depth is 10-30 cm. Install a trunk ring pressure module at the middle of the trunk of the Dalbergia odorifera plant, 1.0-1.8 m above the ground. The initial air pressure of the trunk ring pressure module is 0.1-0.3 MPa. Lay the root zone cold and hot alternating system around the root zone of the Dalbergia odorifera plant. The buried depth of the root zone cold and hot alternating system is 15-20 cm, and the pipeline distance is 10-30 cm. Install 2-5 groups of canopy local high temperature modules at the top of the canopy of the Dalbergia odorifera plant. The radiation angle of the canopy local high temperature modules is set to -70-70°. The integrated PLC controller is connected to the root vibration modules, the trunk ring pressure modules, the root zone cold and hot alternating system, and the canopy local high temperature modules. The integrated PLC controller is electrically connected to the root vibration sensors, the soil temperature and humidity sensors, the trunk ring pressure sensors, the trunk diameter micro-change sensors, the environmental light intensity sensors, and the canopy temperature and humidity sensors. Bury 5-13 root vibration sensors at the level of the root of the Dalbergia odorifera plant and on the side of the root vibration modules, in contact with the root of the Dalbergia odorifera plant and directly opposite the root vibration modules. Bury 2-9 soil temperature and humidity sensors at the level of the root of the Dalbergia odorifera plant and on the side of the root vibration modules, in contact with the soil surface of the trunk of the Dalbergia odorifera plant. Install 1-4 trunk ring pressure sensors between the trunk of the Dalbergia odorifera plant and the trunk ring pressure modules. Install 3-12 trunk diameter micro-change sensors at the middle of the trunk of the Dalbergia odorifera plant, in contact with the canopy and the root. Install 1-4 environmental light intensity sensors in the canopy of the Dalbergia odorifera plant, and install 1-4 canopy temperature and humidity sensors in the canopy of the Dalbergia odorifera plant. S2, parameter setting: Physical stress: the root vibration module works from 9:00 to 11:00 every day, the working mode is 30 min on / 30 min off, the root vibration frequency is 5-20 Hz, and the vibration amplitude is 0.5-2 mm; the main stem ring pressure module is periodically inflated and deflated, and the main stem ring pressure is controlled to be 0.1-0.3 MPa, and it is inflated for 5 min and deflated for 10 min every 6 h; Temperature variation regulation: the root zone cold and hot alternating system circulates cold and hot water in the soil of the Dalbergia odorifera plant root zone, and the cold and hot circulation is set as: from 8:00 to 16:00 every day, the root zone cold and hot alternating system alternately circulates 35-40 ℃ warm water; from 16:00 to 8:00 the next day, the root zone cold and hot alternating system alternately circulates 5-10 ℃ cold water; the crown local high temperature module is turned on for 2-4 h from 10:00 to 14:00 every day, the surface temperature of the tree crown is maintained at 45-50 ℃, and the radiation angle of the crown local high temperature module is set to -70-70°; Intelligent control: the root vibration sensor, soil temperature and humidity sensor, main stem ring pressure sensor, tree trunk diameter micro-change sensor, environmental light intensity sensor and crown temperature and humidity sensor collect data every 30-60 min, the root vibration sensor, soil temperature and humidity sensor, main stem ring pressure sensor, tree trunk diameter micro-change sensor, environmental light intensity sensor and crown temperature and humidity sensor transmit the collected data to the integrated PLC controller, the integrated PLC controller automatically corrects abnormal parameters to form control adjustment parameters and transmits the control adjustment parameters to the root vibration module, main stem ring pressure module, root zone cold and hot alternating system and crown local high temperature module for automatic correction; S3, result inspection: After the root vibration module, main stem ring pressure module, root zone cold and hot alternating system and crown local high temperature module continuously process the Dalbergia odorifera plant for 12-24 months, sample the Dalbergia odorifera plant tree core part, and sequentially detect the microstructure, chemical composition and aroma characteristics, and compare with the normal growth and development of the Dalbergia odorifera plant to see if it meets the requirements.

[0009] Further, the root vibration module is set as a micro vibration motor buried in the soil around the tree roots of the Dalbergia odorifera plant, the vibration frequency of the micro vibration motor is 5-10 Hz, and the vibration amplitude is 0.5-1.5 mm.

[0010] Further, the main stem ring pressure module is set as an elastic silica gel air bag surrounding the tree trunk of the Dalbergia odorifera plant, and the elastic silica gel air bag is connected to an air pressure pump for periodic inflation and deflation, the pressure of the air pressure pump is 0.1-0.25 MPa, and the air pressure pump is inflated for 5 min and deflated for 10 min every 6 h.

[0011] Further, the root zone cold-heat alternating system is provided as a spiral heat exchange pipeline embedded in the soil around the roots of Dalbergia odorifera plants, and the spiral heat exchange pipeline is cyclically connected with the temperature-controlled water tank through an external circulating pump.

[0012] Further, the spiral heat exchange pipeline is alternately injected with 5-8 DEG C cold water or 35-38 DEG C warm water through the external circulating pump, and one cold-heat cycle is completed in 24 hours.

[0013] Further, the cold-heat cycle is set as follows: from 8:00 to 16:00 every day, the spiral heat exchange pipeline is alternately injected with 35-38 DEG C warm water through the external circulating pump; and from 16:00 to 8:00 the next day, the spiral heat exchange pipeline is alternately injected with 5-8 DEG C cold water through the external circulating pump.

[0014] Further, the crown layer local high-temperature module is provided as an infrared heating lamp group installed on the top of the crown of the Dalbergia odorifera plant and capable of adjusting the angle, the radiation angle of the infrared heating lamp group is set as -45-45 DEG, the rated power of the infrared heating lamp group is 500-1000 W, and the radiation range covers 1 / 3 of the area of the crown.

[0015] Further, the horizontal distance between the infrared heating lamp group and the top of the crown of the Dalbergia odorifera plant is 20-50 cm, the vertical distance is 15-55 cm, the infrared heating lamp group is turned on for 2-4 hours from 10:00 to 14:00 every day, and the surface temperature of the crown is maintained at 46-50 DEG C.

[0016] The root vibration module simulates natural geological activities, stimulates the stress response of the root system, promotes the transportation of hormones such as abscisic acid (ABA) and ethylene to the aboveground part, and activates the core defense mechanism; the trunk circumferential pressure module slightly extrudes the trunk in a circumferential direction, simulates the animal gnawing or wind damage stress, and induces local cell lignification and secondary metabolite accumulation; the root zone cold-heat alternating system triggers the overall metabolic adjustment of the tree, and accelerates the activity of core-specific enzymes (such as phenylalanine ammonia lyase PAL); the crown layer local high-temperature module simulates local high temperature (the surface temperature of the crown rises to 45-50 DEG C) under strong light irradiation, further strengthens the stress response of the terminal bud and phloem, and accelerates the inward differentiation of the core cambium; the integrated PLC controller and sensor monitor the physiological state of the plant and the environmental parameters in real time, and automatically adjust the vibration frequency, air pressure intensity, cold-heat cycle period and heating time according to the preset program.

[0017] Compared with the prior art, the method for realizing rapid core formation of Dalbergia odorifera by utilizing physical stress effect has the following beneficial effects: 1. The cycle is greatly shortened: through the composite physical-temperature change stress, the directional differentiation of the core cambium cells is induced, and the natural process of tens of years is compressed to 3-5 years, which significantly improves the economic benefit of the artificial forest; 2. Quality controllable: precisely regulate stress intensity and duration, avoid wood cracking or decay caused by excessive damage, core density, aroma components and traditional natural formation are basically the same; 3. Environmentally friendly: pure physical means (no chemical agents), vibration and temperature change parameters meet the physiological tolerance range of trees, without destroying the ecological balance; 4. Intelligent adaptation: real-time feedback through sensors, automatic optimization of processing strategy, suitable for individuals of Dalbergia odorifera of different ages and diameters, and has strong popularization. DETAILED DESCRIPTION

[0018] The application will be further described and illustrated below in conjunction with specific embodiments.

[0019] In order to make the purpose, technical scheme and advantages of the present application clearer, the following embodiments are used to further illustrate the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0020] In the description of the present application, it should be understood that the terms "upper", "lower", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship in the technical scheme, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application. Embodiment 1

[0021] A method for realizing rapid core material formation of Dalbergia odorifera by physical stress effect, the method is based on a device for realizing rapid core material formation of Dalbergia odorifera by physical stress effect, the device for realizing rapid core material formation comprises a physical stress unit, a temperature change control unit and an intelligent control unit.

[0022] The physical stress unit comprises a root vibration module and a trunk ring pressure module; the temperature change control unit comprises a root zone cold-hot alternating system and a crown layer local high temperature module; the intelligent control unit comprises an integrated PLC controller, a root vibration sensor, a soil temperature and humidity sensor, a trunk ring pressure sensor, a trunk diameter micro-change sensor, an environmental light intensity sensor and a crown layer temperature and humidity sensor.

[0023] A method for realizing rapid core material formation of Dalbergia odorifera by physical stress effect, the method specifically comprises the following steps: S1, device installation: The Dalbeg Dalbergia plants with a breast diameter of 8-12 cm, healthy, no pests and diseases, and sufficient nutrient supply are selected, 4-12 root vibration modules are annularly buried at 30-50 cm from the base of the trunk, the buried interval of the root vibration modules is 5-30 cm, and the buried depth is 10-30 cm; a main trunk annular pressure module is installed at the middle part of the Dalbeg Dalbergia plant trunk at 1.0-1.8 m from the ground, and the initial air pressure of the main trunk annular pressure module is 0.1-0.3 MPa; A root zone cold-heat alternating system is laid around the root zone of the Dalbeg Dalbergia plant, the root zone cold-heat alternating system is buried at 15-20 cm, and the pipeline interval is 10-30 cm; 2-5 groups of crown layer local high-temperature modules are installed at the top of the crown of the Dalbeg Dalbergia plant, and the radiation angle of the crown layer local high-temperature module is set to -70-70°; A PLC controller is integrated to control the root vibration module, the main trunk annular pressure module, the root zone cold-heat alternating system and the crown layer local high-temperature module; the PLC controller is electrically connected with a root vibration sensor, a soil temperature and humidity sensor, a main trunk annular pressure sensor, a trunk diameter micro-change sensor, an environmental light intensity sensor and a crown layer temperature and humidity sensor. 5-13 root vibration sensors are buried at the level of the root of the Dalbeg Dalbergia plant and the root vibration module, on the side of the root vibration module, and close to the root of the Dalbeg Dalbergia plant and opposite to the root vibration module; 2-9 soil temperature and humidity sensors are buried at the level of the root of the Dalbeg Dalbergia plant and the root zone cold-heat alternating system, on the side of the root vibration module, and close to the ground surface of the trunk of the Dalbeg Dalbergia plant; 1-4 main trunk annular pressure sensors are installed between the trunk of the Dalbeg Dalbergia plant and the main trunk annular pressure module; 3-12 trunk diameter micro-change sensors are installed at the middle part of the trunk of the Dalbeg Dalbergia plant, close to the crown and the root; 1-4 environmental light intensity sensors are installed close to the crown of the Dalbeg Dalbergia plant, and 1-4 crown layer temperature and humidity sensors are installed close to the crown of the Dalbeg Dalbergia plant; S2, parameter setting: Physical stress: the root vibration module performs root vibration work from 9:00 to 11:00 every day, the working mode is 30 min on / 30 min off, the root vibration frequency is 5-20 Hz, and the vibration amplitude is 0.5-2 mm; the main trunk annular pressure module performs periodic inflation and deflation, the main trunk annular pressure is controlled to be 0.1-0.3 MPa, and inflation is performed for 5 min and deflation is performed for 10 min every 6 h; Temperature regulation: the root zone cold and hot alternating system circulates cold and hot water in the soil of the Dalbergia odorifera plant. The cold and hot cycle is set as follows: from 8:00 to 16:00 every day, the root zone cold and hot alternating system alternately circulates 35-40℃ warm water; from 16:00 to 8:00 the next day, the root zone cold and hot alternating system alternately circulates 5-10℃ cold water; the crown local high temperature module is turned on for 2-4 hours from 10:00 to 14:00 every day, the surface temperature of the tree crown is maintained at 45-50℃, and the radiation angle of the crown local high temperature module is set at -70-70°; Intelligent control: the root vibration sensor, soil temperature and humidity sensor, trunk ring pressure sensor, trunk diameter micro-change sensor, environmental light intensity sensor and crown temperature and humidity sensor collect data every 30-60 minutes, the root vibration sensor, soil temperature and humidity sensor, trunk ring pressure sensor, trunk diameter micro-change sensor, environmental light intensity sensor and crown temperature and humidity sensor transmit the collected data to the integrated PLC controller, the integrated PLC controller automatically corrects abnormal parameters to form control adjustment parameters and transmits the control adjustment parameters to the root vibration module, trunk ring pressure module, root zone cold and hot alternating system and crown local high temperature module for automatic correction; S3, result inspection: After the root vibration module, trunk ring pressure module, root zone cold and hot alternating system and crown local high temperature module continuously process the Dalbergia odorifera plant for 12-24 months, the core part of the Dalbergia odorifera plant is sampled and detected, and the microstructure, chemical composition and aroma characteristics are detected in sequence. Compared with the normally growing Dalbergia odorifera plant, whether it meets the requirements.

[0024] Further, the root vibration module is a micro vibration motor buried in the soil around the roots of the Dalbergia odorifera plant, the vibration frequency of the micro vibration motor is 5-10 Hz, and the vibration amplitude is 0.5-1.5 mm.

[0025] Further, the trunk ring pressure module is an elastic silica gel air bag surrounding the trunk of the Dalbergia odorifera plant, the elastic silica gel air bag is connected to an air pressure pump for periodic inflation and deflation, the pressure of the air pressure pump is 0.1-0.25 MPa, and the air pressure pump inflates for 5 minutes and deflates for 10 minutes every 6 hours.

[0026] Further, the root zone cold and hot alternating system is a spiral heat exchange pipeline buried in the soil around the roots of the Dalbergia odorifera plant, and the spiral heat exchange pipeline is circularly connected with a temperature-controlled water tank through an external circulating pump.

[0027] Further, the spiral heat exchange pipeline alternately circulates 5-8℃ cold water or 35-38℃ warm water through the external circulating pump, and one cold and hot cycle is completed in 24 hours.

[0028] Further, the cold and hot cycle is set as: 8:00-16:00 every day, the spiral heat exchange pipeline is alternately injected with 35-38 ℃ warm water through an external circulating pump; 16:00 every day-8:00 the next day, the spiral heat exchange pipeline is alternately injected with 5-8 ℃ cold water through an external circulating pump.

[0029] Further, the crown local high temperature module is set as an infrared heating lamp group installed on the top of the Dalbergia odorifera plant canopy with adjustable angle, the radiation angle of the infrared heating lamp group is set as-45-45°, the rated power of the infrared heating lamp group is 500-1000 W, and the radiation range covers 1 / 3 of the canopy area.

[0030] Further, the horizontal distance between the infrared heating lamp group and the top of the Dalbergia odorifera plant canopy is 20-50 cm, the vertical distance is 15-55 cm, the infrared heating lamp group is turned on for 2-4 h during 10:00-14:00 every day, and the canopy surface temperature is maintained at 46-50 ℃. Example 2

[0031] The difference between this embodiment and example 1 is that: A method for realizing rapid core material of Dalbergia odorifera by using physical stress effect, the method specifically includes the following steps: S1, device installation: Select Dalbergia odorifera plants with a breast diameter of 10 cm, healthy, no pests and diseases, and sufficient nutrient supply, and bury 6 micro vibration motors in a ring at a distance of 50 cm from the base of the trunk, the buried interval of the micro vibration motors is 30 cm, and the buried depth is 20 cm; install an elastic silica gel air bag at a distance of 1.2 m from the ground in the middle of the Dalbergia odorifera plant trunk, the elastic silica gel air bag is connected to an air pressure pump for periodic inflation and deflation, and the initial air pressure of the elastic silica gel air bag is 0.2 MPa; Lay a spiral heat exchange pipeline around the root zone of the Dalbergia odorifera plant, the spiral heat exchange pipeline is connected with a temperature-controlled water tank through an external circulating pump, the spiral heat exchange pipeline is buried to a depth of 20 cm with a pipeline spacing of 20 cm; install 2 groups of infrared heating lamp groups on the top of the canopy of the Dalbergia odorifera plant, and the radiation angle of the infrared heating lamp groups is set to 45°; An integrated PLC controller is connected to control the micro vibration motor, the elastic silica gel air bag, the spiral heat exchange pipeline and the infrared heating lamp group; the integrated PLC controller is electrically connected to a root vibration sensor, a soil temperature and humidity sensor, a trunk ring pressure sensor, a trunk diameter micro-change sensor, an ambient light intensity sensor and a canopy temperature and humidity sensor. 7 root vibration sensors are buried at the level of the root of Dalbergia odorifera plant and the micro vibration motor, and on the side of the root vibration module, adhering to the root of Dalbergia odorifera plant and facing the micro vibration motor; 4 soil temperature and humidity sensors are buried at the level of the root of Dalbergia odorifera plant and the spiral heat exchange pipeline, and on the side of the root vibration module, adhering to the surface of the land of the trunk of Dalbergia odorifera plant; 4 trunk circumferential pressure sensors are installed between the trunk of Dalbergia odorifera plant and the elastic silica gel air bag; 3 trunk diameter micro change sensors are installed at the middle part of the trunk of Dalbergia odorifera plant, the crown layer and the root; 2 environmental light intensity sensors are installed on the crown layer of Dalbergia odorifera plant, and 2 crown layer temperature and humidity sensors are installed on the crown layer of Dalbergia odorifera plant; S2, parameter setting: Physical stress: the root vibration motor works from 9:00 to 11:00 every day, the working mode is 30 min on / 30 min off, the root vibration frequency is 10 Hz, and the vibration amplitude is 1.0 mm; the elastic silica gel air bag is periodically inflated and deflated, and the trunk circumferential pressure is controlled to be 0.2 MPa, and the inflation and deflation are 5 min / inflation and 10 min / deflation every 6 h; Temperature change regulation: the spiral heat exchange pipeline performs cold and hot circulation on the root zone soil of Dalbergia odorifera plant, and the cold and hot circulation is set as: from 8:00 to 16:00 every day, the spiral heat exchange pipeline alternately circulates and injects 38 ℃ warm water through an external circulating pump; from 16:00 to 8:00 the next day, the spiral heat exchange pipeline alternately circulates and injects 8 ℃ cold water through an external circulating pump; the infrared heating lamp group is turned on for 2 h from 10:00 to 14:00 every day, the surface temperature of the crown is maintained at 45 ℃, and the radiation angle of the infrared heating lamp group is set to 45°; Intelligent control: the root vibration sensor, the soil temperature and humidity sensor, the trunk circumferential pressure sensor, the trunk diameter micro change sensor, the environmental light intensity sensor and the crown layer temperature and humidity sensor collect data every 30-60 min, the root vibration sensor, the soil temperature and humidity sensor, the trunk circumferential pressure sensor, the trunk diameter micro change sensor, the environmental light intensity sensor and the crown layer temperature and humidity sensor transmit the collected data to the integrated PLC controller, the integrated PLC controller automatically corrects the abnormal parameters to form control adjustment parameters and transmits the control adjustment parameters to the connected micro vibration motor, elastic silica gel air bag, spiral heat exchange pipeline and infrared heating lamp group for automatic correction; S3, result inspection: After the root vibration module, the trunk circumferential pressure module, the root zone cold and hot alternating system and the crown layer local high temperature module continuously process the Dalbergia odorifera plant for 24 months, the sample is taken from the core part of the Dalbergia odorifera plant, and the microstructure, chemical composition and aroma characteristics are detected in sequence, and compared with the Dalbergia odorifera plant normally growing and developing to see whether it meets the requirements; Among them, the microstructure: the core material accounts for 42% (the traditional natural growth is only 8% at the same period), and the duct is filled with a large amount of yellow-brown deposits (tannin substances); the chemical composition: the total flavonoid content is 12.3 mg / g (3.1 times higher than the untreated control group), and the density is 0.89 g / cm3 (close to the natural old material 0.92 g / cm3); the aroma characteristics: the characteristic bulleyaconin (content 0.15 μg / g) is detected by gas chromatography, which is highly similar to the aroma spectrum of the century-old material.

[0032] In the present application, the method realizes the rapid core material of Dalbergia odorifera by using physical stress effect, which has the actual effect: the cycle is greatly shortened: through the composite physical-temperature stress, the core material cambium cell directional differentiation is induced, the natural process of dozens of years is compressed to 3-5 years, the economic benefit of artificial forest is significantly improved; the quality is controllable: the stress intensity and time are accurately controlled, the wood cracking or decay caused by excessive damage is avoided, the core material density, aroma composition and traditional natural formation are basically the same; environment friendly: pure physical means (no chemical reagent), the vibration and temperature change parameters meet the physiological tolerance range of trees, and the ecological balance is not destroyed; intelligent adaptation: through real-time feedback of sensors, the treatment strategy is automatically optimized, suitable for different tree age and diameter of Dalbergia odorifera individuals, and the popularization is strong.

[0033] The technical solutions disclosed by the embodiments of the present application are described in detail above, the principles and implementation modes of the embodiments of the present application are described by applying specific embodiments, the above embodiment description is only applicable to help understand the principles of the embodiments of the present application; at the same time, for those skilled in the art, according to the embodiments of the present application, the specific implementation modes and application scope will be changed, and the above description should not be understood as the limitation of the present application.

Claims

1. A method for rapidly forming core material from Dalbergia odorifera using physical stress effects, characterized in that, The method is based on a device for rapidly forming core material from Dalbergia odorifera using physical stress effects. The device includes a physical stress unit, a temperature control unit, and an intelligent control unit. The physical stress unit includes a root vibration module and a trunk circumferential pressure module; the temperature regulation unit includes a root zone hot and cold alternation system and a canopy local high temperature module; the intelligent control unit includes an integrated PLC controller, a root vibration sensor, a soil temperature and humidity sensor, a trunk circumferential pressure sensor, a trunk diameter micro-change sensor, an ambient light intensity sensor, and a canopy temperature and humidity sensor. The method specifically includes the following steps: S1. Device Installation: Select healthy Dalbergia odorifera trees with a diameter at breast height (DBH) of 8–12 cm and sufficient nutrients. Bury 4–12 root vibration modules in a ring around the base of the trunk at a distance of 30–50 cm. The spacing between the root vibration modules should be 5–30 cm, and the burial depth should be 10–30 cm. Install a trunk circumferential pressure module at the middle of the trunk, 1.0–1.8 m above the ground. The initial air pressure of the trunk circumferential pressure module should be 0.1–0.3 MPa. A root zone heat exchange system is laid around the root zone of the Dalbergia odorifera plant. The root zone heat exchange system is buried 15-20 cm deep with pipe spacing of 10-30 cm. 2-5 sets of local high temperature modules are installed at the top of the Dalbergia odorifera canopy. The radiation angle of the local high temperature modules is set to -70-70°. The integrated PLC controller controls the root vibration module, trunk circumferential pressure module, root zone hot and cold alternation system, and canopy local high temperature module; the integrated PLC controller is electrically connected to the root vibration sensor, soil temperature and humidity sensor, trunk circumferential pressure sensor, trunk diameter micro-change sensor, ambient light intensity sensor, and canopy temperature and humidity sensor. Five to 13 root vibration sensors are buried at the base of the Dalbergia odorifera plant, flush with the root vibration module, on the side of the root vibration module, and directly opposite the root vibration module. Two to 9 soil temperature and humidity sensors are buried at the base of the Dalbergia odorifera plant, flush with the root zone's hot and cold alternation system, on the side of the root vibration module, and on the soil surface, close to the trunk. One to 4 trunk circumferential pressure sensors are installed between the trunk and the trunk circumferential pressure module. Three to 12 trunk diameter micro-change sensors are installed in the middle of the trunk, canopy, and roots. One to 4 ambient light intensity sensors and one to 4 canopy temperature and humidity sensors are installed in the canopy. S2, Parameter Settings: Physical stress: The root vibration module operates from 9:00 to 11:00 daily, with a 30-minute on / 30-minute off cycle, a root vibration frequency of 5-20 Hz, and a vibration amplitude of 0.5-2 mm; the trunk circumferential pressure module performs periodic inflation and deflation, controlling the trunk circumferential pressure at 0.1-0.3 MPa, with inflation for 5 minutes and deflation for 10 minutes every 6 hours; Temperature regulation: The root zone hot and cold alternation system circulates hot and cold water in the soil of the root zone of Dalbergia odorifera. The hot and cold alternation system is set as follows: from 8:00 to 16:00 every day, the root zone hot and cold alternation system alternately injects warm water of 35-40 ℃; from 16:00 to 8:00 the next day, the root zone hot and cold alternation system alternately injects cold water of 5-10 ℃; the canopy local high temperature module is turned on for 2-4 hours from 10:00 to 14:00 every day to maintain the surface temperature of the canopy at 45-50 ℃, and the radiation angle of the canopy local high temperature module is set to -70 to 70°. Intelligent control: Root vibration sensor, soil temperature and humidity sensor, trunk circumferential pressure sensor, trunk diameter micro-change sensor, ambient light intensity sensor, and canopy temperature and humidity sensor collect data every 30-60 minutes. The root vibration sensor, soil temperature and humidity sensor, trunk circumferential pressure sensor, trunk diameter micro-change sensor, ambient light intensity sensor, and canopy temperature and humidity sensor transmit the collected data to the integrated PLC controller. The integrated PLC controller automatically corrects abnormal parameters to form control adjustment parameters and transmits the control adjustment parameters to the root vibration module, trunk circumferential pressure module, root zone hot and cold alternation system, and canopy local high temperature module for automatic correction. S3. Result verification: After continuously treating Dalbergia odorifera plants for 12-24 months using a root vibration module, a trunk circumferential pressure module, a root zone hot-cold alternation system, and a canopy local high-temperature module, samples were taken from the core of the Dalbergia odorifera plants for testing. The microstructure, chemical composition, and aroma characteristics were tested sequentially, and the results were compared with those of normally growing and developing Dalbergia odorifera plants to determine if they met the requirements.

2. The method for achieving rapid core formation of Dalbergia odorifera using physical stress effect according to claim 1, characterized in that, The root vibration module is configured as a miniature vibration motor buried in the soil around the roots of the Dalbergia odorifera plant. The vibration frequency of the miniature vibration motor is 5~10 Hz and the vibration amplitude is 0.5~1.5 mm.

3. The method for achieving rapid core formation of Dalbergia odorifera using physical stress effect according to claim 1, characterized in that, The main trunk circumferential pressure module is set as an elastic silicone airbag surrounding the trunk of the Dalbergia odorifera plant. The elastic silicone airbag is connected to an air pressure pump for periodic inflation and deflation. The pressure of the air pressure pump is 0.1~0.25 MPa, and the air pressure pump inflates for 5 minutes and deflates for 10 minutes every 6 hours.

4. The method for achieving rapid core formation of Dalbergia odorifera using physical stress effect according to claim 1, characterized in that, The root zone hot and cold alternation system is set as a spiral heat exchange pipe buried in the soil around the roots of the Dalbergia odorifera tree. The spiral heat exchange pipe is connected to the temperature-controlled water tank through an external circulation pump.

5. The method for achieving rapid core formation of Dalbergia odorifera using physical stress effect according to claim 4, characterized in that, The spiral heat exchange pipe is alternately injected with cold water at 5~8℃ or warm water at 35~38℃ by an external circulation pump, completing one hot and cold cycle in 24 hours.

6. The method for achieving rapid core formation of Dalbergia odorifera using physical stress effect according to claim 5, characterized in that, The hot and cold circulation is set as follows: from 8:00 to 16:00 every day, the spiral heat exchange pipe is alternately injected with warm water at 35 to 38 ℃ through an external circulation pump; from 16:00 to 8:00 the next day, the spiral heat exchange pipe is alternately injected with cold water at 5 to 8 ℃ through an external circulation pump.

7. The method for achieving rapid core formation of Dalbergia odorifera using physical stress effect according to claim 1, characterized in that, The local high-temperature module for the canopy is set as an adjustable infrared heating lamp group installed at the top of the canopy of the Dalbergia odorifera plant. The radiation angle of the infrared heating lamp group is set to -45~45°, the rated power of the infrared heating lamp group is 500~1000 W, and the radiation range covers 1 / 3 of the canopy area.

8. The method for achieving rapid core formation of Dalbergia odorifera using physical stress effect according to claim 6, characterized in that, The infrared heating lamp group is 20-50 cm horizontally and 15-55 cm vertically away from the top of the crown of the Dalbergia odorifera tree. The infrared heating lamp group is turned on for 2-4 hours every day from 10:00 to 14:00, and the surface temperature of the crown is maintained at 46-50℃.