Rejuvenation maintenance management method for transplanted landscape plants

Abstract

The invention discloses a rejuvenation maintenance management method for transplanted landscape plants, and relates to the technical field of plant protection, the method comprises a water culture root promotion stage, a gradient soil transfer stage and an environment adaptation stage which are carried out in sequence, and dynamic environment regulation and control and cultivation management are taken as the core. The dynamic environment regulation comprises hydroponic root-promoting stage environment control, soil culture transition stage environment adaptation, hydroponic to soil culture connection operation and dynamic monitoring and adaptive adjustment, and the hydroponic root-promoting stage environment control comprises illumination regulation, water temperature and dissolved oxygen management and temperature and airflow control. The method has the advantages that by constructing a three-order rejuvenation system of'hydroponic root promotion, gradient soil transfer and environmental adaptation 'and creating a three-stage gradient adaptation mechanism of illumination, temperature, humidity and ventilation capacity, the problem of environmental mutation stress from hydroponic culture to soil culture is effectively solved, the rejuvenation period is shortened, and the rejuvenation efficiency is improved. The method is suitable for various common garden landscape plants.

Description

Technical Field

[0001] This invention relates to the field of plant protection technology, specifically a method for the rejuvenation and maintenance management of transplanted landscape plants. Background Technology

[0002] In landscape enhancement and renovation projects, plant transplantation is a key technology for quickly achieving landscape effects. However, severe root damage during transplantation can directly lead to a sharp decline in the plant's ability to absorb water and nutrients. In addition, there are significant differences between the new habitat and the original growing environment in terms of light, temperature, humidity, and soil conditions. Transplanted seedlings often face the risks of long recovery periods, low survival rates, or even death. Currently, traditional rejuvenation and maintenance methods rely heavily on experience-based management and lack a systematic environmental transition mechanism. Especially during the transition from hydroponics to soil cultivation, environmental parameters often undergo sudden changes, which can easily cause physiological stress in the root system, resulting in adaptive problems such as hindered new root development and wilting and yellowing of leaves. This has become a technical bottleneck restricting the quality and efficiency of transplantation survival.

[0003] While existing technologies employ single methods such as hydroponics to promote root growth or soil cultivation for maintenance, they generally suffer from problems such as abrupt transitions between hydroponic and soil cultivation environments, crude regulation of environmental factors such as light, temperature, water, and air, and mismatch between nutrient supply patterns and root development stages. For example, light management lacks gradual acclimatization of spectrum and intensity, insufficient precision in temperature and humidity control easily leads to diseases, soil aeration measures have low effectiveness, and there is a lack of dynamic feedback adjustment strategies based on the plant's physiological state. Therefore, there is an urgent need for a rejuvenation and maintenance method that can achieve a smooth environmental transition, refined regulation, and adapt to the plant's own recovery patterns, in order to systematically solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a method for the rejuvenation and maintenance management of transplanted garden landscape plants.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for the rejuvenation and maintenance management of transplanted garden landscape plants, comprising a hydroponic root-promoting stage, a gradient soil-transfer stage, and an environmental adaptation stage, with dynamic environmental control and cultivation management as the core. The dynamic environmental control includes environmental control during the hydroponic root-promoting stage, environmental adaptation during the soil-transfer stage, hydroponic-to-soil-transfer connection operation, and dynamic monitoring and adaptive adjustment. The environmental control during the hydroponic root-promoting stage includes light control, water temperature and dissolved oxygen management, and temperature and airflow control. In the water temperature and dissolved oxygen management, a new nutrient solution is added and replaced once a week.

[0006] As a further aspect of the present invention: the illumination regulation adopts an intelligent light control system, providing a diffused light environment of 3000 lux to 5000 lux, with a photosynthetically effective radiation wavelength range of 400 nm to 700 nm. The light intensity in this band accounts for 60% to 100% of the total light intensity. The daily illumination duration is 10 to 12 hours. LED light strips are used for spectrum customization, wherein the intensity ratio of blue light (450 nm to 470 nm) to red light (630 nm to 660 nm) is maintained at 3:1. Ultraviolet light irradiation is increased by 5% of the total amount during the periods from 9:00 to 11:00 and from 15:00 to 17:00 daily. For every 1000 lux increase in light intensity, the nutrient solution concentration is increased by 5% accordingly.

[0007] As a further aspect of the present invention: the water temperature and dissolved oxygen management adopts a constant temperature water circulation system to control the temperature of the hydroponic solution at 21°C to 23°C, and maintains the dissolved oxygen content of the water at 8mg / L to 10mg / L through a nano-aeration device. Enhanced aeration is carried out twice a day at 10:00 and 16:00, and the dissolved oxygen value reaches 10mg / L after each aeration.

[0008] As a further aspect of the present invention: the temperature and airflow control maintains the relative humidity of the hydroponic environment at 75% to 80%, and uses an ultrasonic humidifier and a dehumidifier in linkage control to keep the humidity fluctuation range within 5%, and uses a crossflow fan to circulate the air once every 20 minutes, with the airflow speed controlled at 0.3m / s to 0.5m / s.

[0009] As a further aspect of the present invention: the fertilization operation during the hydroponic root-promoting stage includes three stages: the basic induction period, the root-promoting growth period, and the soil adaptation period. The basic induction period is from day 1 to day 5, using clean water for cultivation, and monitoring the pH value of the root exudate daily. When the pH value stabilizes at 5.5 to 6.5, a special hydroponic fertilizer with a concentration of 0.5 times the standard concentration is added on day 5, with a mass ratio of nitrogen, phosphorus pentoxide, and potassium oxide of 1:2:1. Aeration is suspended for 30 minutes after fertilization. The root-promoting growth period is from day 6 to day 15. When the new root length reaches 1cm to 2cm, the fertilizer is removed. The fertilizer concentration was increased to twice the standard concentration, and drip fertilization was carried out at a flow rate of 50 ml / h during the peak light period from 10:00 to 14:00 every day. At the same time, the dissolved oxygen level was monitored and maintained at 8 mg / L to 10 mg / L. The soil adaptation period was from the 16th to the 20th day. When the root length reached 3 cm to 5 cm, the fertilizer concentration was gradually reduced to 0.3 times the standard concentration. The daily application amount was 90% of the previous day's liquid fertilizer amount, and 5% of the total fertilizer amount of soil substrate extract was added. This extract was prepared by soaking leaf mold and water at a mass ratio of 1:5 for 24 hours and then filtering.

[0010] As a further aspect of the present invention: the environmental adaptation during the soil cultivation transition stage includes light gradient acclimatization, coordinated temperature and humidity control, and soil aeration optimization. The light gradient acclimatization is carried out from day 1 to day 15 after soil cultivation and thereafter. The coordinated temperature and humidity control adopts diurnal temperature variation management, with daytime temperature of 23°C to 27°C and nighttime temperature of 17°C to 19°C, and a diurnal temperature difference of less than 8°C. The air humidity is maintained at 70% to 75% in the first week of cultivation, 65% to 70% in the second week, and 60% in the third week. Up to 65%, the soil aeration optimization adopts a high-ridge shallow planting mode, with a ridge height of 15cm to 20cm and a planting depth 3cm to 5cm greater than that of hydroponics. Four to six PVC ventilation blind pipes with a diameter of 10mm are laid per square meter, with a pipe hole density of 20 holes / meter. A centrifugal fan is connected to perform aeration for 30 minutes each at 9:00 and 15:00 daily, with an airflow pressure of 0.02MPa. The substrate surface is covered with a 5cm thick composite covering layer of sawdust and coarse sand with a volume ratio of 2:1.

[0011] As a further aspect of the present invention: the hydroponic to soil-culture transition operation includes root pretreatment, substrate formulation and transplanting, and seedling establishment period management. The root pretreatment is carried out when the hydroponic roots grow to 3cm to 5cm and the number of new roots is not less than 5. Fertilization is stopped and the plants are cultured in clean water for 24 hours. After pruning rotten roots, the plants are soaked in a 500-fold carbendazim solution for 15 minutes. After being taken out, the plants are transplanted while retaining 10% moisture. The substrate formulation and transplanting adopt a three-level substrate system.

[0012] As a further aspect of the present invention: the seedling establishment period management involves a fully enclosed seedling establishment process for the first 7 days after transplanting, with a temporary shade shed having a 70% shading rate. Foliar spraying is carried out at 9:00 and 16:00 daily. Starting from the 8th day, the shade shed is gradually uncovered, with ventilation increased by 1 hour daily, until full ventilation is achieved by the 14th day. During the seedling establishment period, a 0.2% potassium dihydrogen phosphate solution is sprayed on the leaves.

[0013] As a further aspect of the present invention: the dynamic monitoring and adaptive adjustment includes physiological index detection and environmental response adjustment. Relative leaf water content, chlorophyll SPAD value, and root activity are measured weekly. If the leaf wilting rate exceeds 10%, a shade structure is activated and the air humidity is increased to 80%. The environmental response adjustment includes operations under any of the following conditions:

[0014] When yellowing of new leaves is detected, increase the proportion of red light by 20% and spray the leaves with a 0.1% chelated iron solution.

[0015] When blackening of the roots is detected, reduce the soil moisture to 55% and increase the aeration frequency to 3 times a day;

[0016] When growth stagnation is detected, the daytime temperature is increased by 2°C to 3°C and the light exposure is extended by 1 hour. Compared with the prior art, the advantages of this invention using the above technical solution are as follows:

[0017] 1. This invention constructs a three-stage rejuvenation system of "hydroponics to promote root growth - gradient soil transition - environmental adaptation", and creates a three-level gradual adaptation mechanism of light, temperature and humidity and aeration. It effectively solves the problem of environmental stress caused by sudden change from hydroponics to soil cultivation, helps plants adapt to the new growth environment more quickly, shortens the rejuvenation cycle, and is applicable to a variety of common garden landscape plants.

[0018] 2. This invention standardizes the transition from hydroponics to soil culture, including scientific root pretreatment, a three-level substrate system, and the "root spreading and planting method," ensuring close contact between the roots and the substrate without compaction. Through scientific management of the seedling establishment period, it helps plants smoothly transition through the adaptation period. The composite covering layer on the surface of the substrate balances air permeability and water retention, further optimizing the root growth microenvironment.

[0019] 3. This invention utilizes a matching slow-release rhizosphere conditioning fertilizer with environmentally responsive release characteristics. The release rate can be adjusted according to soil moisture content to avoid nutrient loss and root burn. The fertilizer's gradient release of nutrients, functional microorganisms, and stress-resistant components work synergistically to achieve multiple functions such as root promotion, nutrient supply, and soil microenvironment improvement. The "layered application method" reduces the number of fertilizations, lowers the total amount used, and improves nutrient utilization. Attached Figure Description

[0020] Figure 1 This is a flowchart of the plant transplantation rejuvenation and maintenance management method in an embodiment of the present invention. Detailed Implementation

[0021] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0022] Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] Please see the appendix Figure 1 This invention discloses a method for the rejuvenation and maintenance management of transplanted garden landscape plants, comprising a hydroponic root-promoting stage, a gradient soil-transfer stage, and an environmental adaptation stage, with dynamic environmental control and cultivation management as the core. The dynamic environmental control includes environmental control during the hydroponic root-promoting stage, environmental adaptation during the soil-transfer stage, the connection operation between hydroponic and soil-transfer stages, and dynamic monitoring and adaptive adjustment. Environmental control during the hydroponic root-promoting stage includes light control, water temperature and dissolved oxygen management, and temperature and airflow control. In the water temperature and dissolved oxygen management, a new nutrient solution is added and replaced once a week.

[0024] In one embodiment of the present invention: the light regulation uses an intelligent light control system to set a diffused light environment of 3000 lux-5000 lux, with photosynthetically effective radiation of 400nm-700nm accounting for ≥60%, and a daily light duration of 10-12 hours. LED light strips are used to achieve spectrum customization, and the ratio of 450nm-470nm blue light and 630nm-660nm red light is maintained at 3:1 to promote root cell division and elongation. The ultraviolet light irradiation is increased by 5% during the periods of 9:00-11:00 and 15:00-17:00 every day. For every 1000 lux increase in light intensity, the nutrient solution concentration is increased by 5%.

[0025] In one embodiment of the present invention: when the dissolved oxygen level is ≥9mg / L, the fertilization program is started; when the dissolved oxygen level is <7mg / L, fertilization is suspended and the aeration frequency is increased; 1 / 3 of the nutrient solution is replaced every week; when changing the water, the temperature difference is controlled at ≤3℃; before adding new nutrient solution, the EC value is measured, and the target value is 1.2mS / cm-1.5mS / cm; when it is lower than 1.2mS / cm, special hydroponic concentrate is added to the standard value.

[0026] In one embodiment of the present invention: when the relative humidity of the hydroponic environment is >80%, the amount of liquid fertilizer is reduced by 20%, and when the humidity is <70%, the efficiency of foliar fertilizer spraying is increased.

[0027] In one embodiment of the present invention: during the light gradient acclimatization in the soil cultivation transition stage, on days 1-3 of the transition: maintain 5000-8000 lux of diffused light, with 8 hours of light exposure per day;

[0028] Days 4-7: Gradually reduce the shading rate to 50%, increase the light intensity to 10,000-12,000 lux, and increase the duration of light exposure to 10 hours;

[0029] Days 8-14: Use a 30% shading rate and a light intensity of 15,000 lux-20,000 lux, and introduce 1 hour of direct sunlight in the morning and evening for acclimatization;

[0030] From day 15 onwards: Adjust the light intensity to the target level according to the plant type: 15,000-20,000 lux for foliage plants and 20,000-30,000 lux for flowering plants.

[0031] In one embodiment of the present invention: during the transition from hydroponics to soil cultivation, the substrate formula and planting technique consist of a bottom layer of 20cm of leaf mold + garden soil + perlite in a 3:2:1 ratio, a middle layer of 10cm of leaf mold + vermiculite + coconut coir in a 2:2:1 ratio, and a top layer of 5cm of sphagnum moss + well-rotted sawdust in a 1:1 ratio. The planting method employs a "root spreading planting method," with the taproot pointing vertically downwards and the fibrous roots spreading naturally. The substrate is filled in layers and lightly pressed to ensure close contact between the roots and the substrate without compaction. The substrate bulk density is controlled at 0.6-0.8 g / cm³. 3 .

[0032] In one embodiment of the present invention: after the hydroponic to soil culture transition operation is completed, a slow-release rhizosphere conditioning fertilizer is used. The granules have a diameter of 3mm-5mm and have water-responsive release characteristics. When the soil moisture content is >65%, the release rate decreases by 30%. The fertilizer uses environmentally responsive materials as carriers and contains gradient-release nutrients, functional microorganisms, and stress-resistant components, with the component proportions being 60%, 25%, 10%, and 5%, respectively.

[0033] Precise application method:

[0034] The layered application method is adopted. When transplanting, fertilizer is mixed into the middle layer of substrate at a rate of 5-10g / plant to form a ring-shaped nutrient zone, 5-8cm away from the main root. On the 10th day after transplanting, a ring-shaped trench with a depth of 5cm is dug 3cm away from the outer edge of the root system, and 3-5g / plant of fertilizer is applied. After covering with soil, water is applied to activate the plant. Fertilizer is applied twice during the entire rejuvenation period, with the total amount controlled at 8-15g / plant.

[0035] Example 1

[0036] Post-transplantation rejuvenation and maintenance of roses:

[0037] I. Hydroponic Root Promotion Stage (20 days)

[0038] Light control

[0039] An intelligent light control system is adopted, with the initial light intensity set at 3000 lux, and the photosynthetically effective radiation of 400nm-700nm accounting for 65%. An additional 5% of 380nm ultraviolet light is added during the periods of 9:00-11:00 and 15:00-17:00 daily.

[0040] Starting from day 5, the light intensity was increased by 1000 lux per week, and the nutrient solution concentration was increased by 5% at the same time, reaching 5000 lux on day 10. The ratio of blue light (450nm-470nm) to red light (630nm-660nm) of the LED light strip was strictly controlled at 3:1, and the daily light exposure time was 12 hours.

[0041] Water temperature and dissolved oxygen management

[0042] The constant temperature water circulation system is activated to stabilize the temperature of the hydroponic solution at 22±1℃, and the nano aeration device continuously supplies oxygen, maintaining the basic dissolved oxygen level at 8mg / L.

[0043] Peak aeration is performed at 10:00 and 16:00 daily to instantly increase dissolved oxygen to 10 mg / L, with an aeration time of 30 minutes per cycle.

[0044] Replace 1 / 3 of the nutrient solution every Wednesday. The new nutrient solution should be left to stand for 24 hours in advance. When changing the water, the temperature difference should be controlled within 2℃. Measure the EC value before adding the new nutrient solution. If it is lower than 1.2mS / cm, calculate the amount to add until the EC value reaches 1.2mS / cm-1.5mS / cm.

[0045] Humidity and airflow control

[0046] The relative humidity of the hydroponic environment is set at 75%-80%, and controlled by the linkage between the ultrasonic humidifier and the dehumidifier. When the humidity is >80%, reduce the amount of liquid fertilizer by 20%, and when the humidity is <70%, add foliar fertilizer spraying once a day.

[0047] The crossflow fan starts every 20 minutes, with the airflow speed controlled at 0.4 m / s to ensure uniform air circulation;

[0048] Fertilization procedures during hydroponics

[0049] Basic induction period (days 1-5): Use clean water for culture. Measure the pH of the root exudate at 14:00 every day. When the pH stabilizes at 5.8 on day 5, add 0.5 times the concentration of special hydroponic fertilizer (N:P2O5:K2O=1:2:1) at a rate of 100mL / plant. After fertilization, turn off aeration for 30 minutes.

[0050] Root growth promotion period (days 6-15): On day 6, when the length of new root sprouting reaches 1.5cm, the fertilizer concentration is increased to 1 times. Drip fertilization is used from 10:00 to 14:00 every day, with the flow rate controlled at 50mL / h. Dissolved oxygen is monitored at the same time to ensure that dissolved oxygen is ≥8mg / L during the fertilization process. The total amount of fertilizer applied per day is 200mL / plant.

[0051] Adaptation period (days 16-20): On day 16, the root length reaches 4cm. The daily liquid fertilizer amount is reduced by 90% of the previous day. At the same time, 5% soil substrate extract (leaf mold: water = 1:5 soaked for 24 hours and filtered) is added. The total daily fertilizer amount is gradually reduced from 180mL to 60mL.

[0052] II. Soil-based transition phase (30 days)

[0053] Root pretreatment and planting

[0054] On day 20, after pruning rotten roots, soak the roots in a 500-fold diluted carbendazim solution for 15 minutes. Remove the roots and retain 10% moisture. Plant using a three-tiered substrate system: the bottom 20cm layer consists of leaf mold, garden soil, and perlite in a 3:2:1 ratio; the middle 10cm layer consists of leaf mold, vermiculite, and coconut coir in a 2:2:1 ratio, mixed with 8g / plant slow-release root zone fertilizer; and the top 5cm layer consists of sphagnum moss and well-rotted sawdust in a 1:1 ratio. The planting depth is increased by 4cm compared to hydroponics, and the substrate bulk density is controlled at 0.7g / cm³. 3 ;

[0055] Illumination gradient acclimatization

[0056] Days 1-3: Maintain 6000 lux of diffused light (70% shading), 8 hours of light per day;

[0057] Days 4-7: Shading rate reduced to 50%, light intensity increased to 11,000 lux, and light duration increased to 10 hours;

[0058] Days 8-14: Shading rate 30%, light intensity 18000 lux, 1 hour more direct sunlight in the morning and evening;

[0059] Starting from day 15: Adjust the light intensity to 25,000 lux (target value for flowering plants), with 12 hours of light per day;

[0060] Temperature and humidity coordinated regulation

[0061] Temperature is managed using a diurnal temperature variation system: 25±2℃ during the day and 18±1℃ at night, controlled by underfloor heating and fan coil systems, with the diurnal temperature difference maintained at 6℃.

[0062] Air humidity: 72% in week 1, 68% in week 2, and 62% in week 3, automatically adjusted via a temperature and humidity linkage module;

[0063] Soil moisture: The substrate moisture sensor monitors the soil moisture in real time, maintaining the field water holding capacity at 62%. Intermittent drip irrigation is used, with each irrigation volume of 80 mL / plant and an interval of 2 days.

[0064] Soil aeration optimization

[0065] The high-ridge shallow planting mode is adopted, with a ridge height of 18cm. Five PVC ventilation blind pipes with a diameter of 10mm are laid per square meter. The pipe body is drilled with a density of 20 holes per meter. A centrifugal fan is connected to aerate for 30 minutes each at 9:00 and 15:00 every day, with an airflow pressure of 0.02MPa.

[0066] The substrate surface is covered with a 5cm thick composite covering layer of wood chips and coarse sand.

[0067] III. Dynamic Monitoring and Management

[0068] Seedling establishment period management

[0069] For the first 7 days after transplanting, the seedlings were kept in a completely enclosed environment with a 70% shading rate. The leaves were sprayed at 9:00 and 16:00 every day, with a 2℃ temperature difference between the water and the substrate. From the 8th day onwards, ventilation was increased by 1 hour per day, and full ventilation was achieved on the 14th day. During this period, the leaves were sprayed with a 0.2% potassium dihydrogen phosphate solution twice a week.

[0070] physiological indicator monitoring and adjustment

[0071] Measurements were taken every Wednesday: relative leaf water content was maintained at 70%, chlorophyll SPAD value was 45, and root activity was measured at 0.9 mg / g·h using the TTC method.

[0072] On the 22nd day, slight yellowing of new leaves was observed. The proportion of red light was immediately increased by 20%, and 0.1% chelated iron solution was sprayed on the leaves. The yellowing was relieved after 3 days.

[0073] IV. Fertilizer Management

[0074] On the 10th day after transplanting, dig a 5cm deep circular trench 3cm from the outer edge of the root system, apply 4g of slow-release root conditioning fertilizer per plant, cover with soil and water to activate. The total amount of fertilizer applied during the entire rejuvenation period is 12g per plant.

[0075] Example 2

[0076] Post-transplantation rejuvenation and maintenance management of ivy:

[0077] I. Hydroponic Root Promotion Stage (18 days)

[0078] Light control

[0079] The initial light intensity was 3000 lux, the photosynthetically active radiation of 400-700nm accounted for 60%, the light exposure was 10 hours per day, the ratio of blue light to red light from LED strips was 3:1, and 5% ultraviolet light was added from 9:00-11:00 and 15:00-17:00 every day. On the 7th day, the light intensity was increased to 4000 lux, and the nutrient solution concentration was increased by 5% at the same time.

[0080] Water temperature and dissolved oxygen management

[0081] The hydroponic solution temperature was kept stable at 22±1℃, the basic dissolved oxygen content was 8mg / L, and the peak aeration was carried out at 10:00 and 16:00 every day to 10mg / L. One-third of the nutrient solution was replaced every Tuesday, with a water temperature difference of ≤3℃. The EC value was controlled at 1.2mS / cm-1.5mS / cm.

[0082] Humidity and airflow control

[0083] With a relative humidity of 75%-80% and an airflow speed of 0.3m / s, reduce liquid fertilizer by 20% when humidity is >80% and increase foliar fertilizer application when humidity is <70%.

[0084] Fertilization procedures during hydroponics

[0085] Basic induction period (days 1-4): Culture in clean water. When the pH stabilizes at 6.0 on day 4, add 0.5 times the concentration of special hydroponic fertilizer, at a rate of 80 mL / plant.

[0086] Root growth promotion period (days 5-13): On day 5, when the new roots are 1cm long, use fertilizer at a 1x concentration, applying 50mL / h via drip irrigation from 10:00 to 14:00 daily, with a total daily amount of 150mL per plant.

[0087] Adaptation period after transplanting (days 14-18): When the root system is 3.5cm long, the daily fertilizer amount should be reduced by 90%, and 5% soil substrate extract should be added, reducing the total amount from 135mL to 50mL.

[0088] II. Soil-based transition phase (28 days)

[0089] Root pretreatment and planting

[0090] On day 18, after root pretreatment, a three-tiered substrate was used for planting: bottom layer of leaf mold: garden soil: perlite = 3:2:1; middle layer of leaf mold: vermiculite: coconut coir = 2:2:1 (mixed with 5g / plant slow-release fertilizer); top layer of sphagnum moss: well-rotted sawdust = 1:1. The planting depth was increased by 3cm, and the substrate bulk density was 0.6g / cm³. 3 ;

[0091] Illumination gradient acclimatization

[0092] Days 1-3: 7000 lux (70% shading), 8 hours of sunlight;

[0093] Days 4-7: 10,000 lux (50% shading), 10 hours of sunlight;

[0094] Days 8-14: 15000 lux (30% shading), 1 hour of direct sunlight in the morning and evening;

[0095] From day 15 onwards: 20,000 lux (target value for foliage plants), 11 hours of light;

[0096] Temperature and humidity coordinated regulation

[0097] Daytime temperature 24℃, nighttime temperature 17℃, diurnal temperature range 7℃, air humidity 75% in week 1, 70% in week 2, 65% in week 3, soil moisture maintained at field capacity 60%, irrigate 60mL / plant each time, every 3 days;

[0098] Soil aeration optimization

[0099] The ridges are 15cm high, with 4 PVC ventilation blind pipes per square meter. They are aerated twice a day, and the surface is covered with a composite covering layer.

[0100] III. Dynamic Monitoring and Management

[0101] Seedling establishment management: Seal the area for the first 7 days to allow the seedlings to establish, and gradually ventilate from the 8th day onwards, and spray the leaves with 0.2% potassium dihydrogen phosphate;

[0102] Indicator monitoring: leaf relative water content 68%, chlorophyll SPAD value 42, root activity 0.85 mg / g·h, roots slightly blackened on the 20th day, soil moisture was reduced to 55%, aeration was increased to 3 times a day, and it returned to normal after 2 days.

[0103] IV. Fertilizer Management

[0104] Ten days after transplanting, apply 3g of slow-release fertilizer per plant, for a total of 8g of fertilizer per plant.

[0105] Based on the two sets of embodiments, it can be seen that the method for rejuvenation and maintenance management of transplanted landscape plants proposed in this invention overcomes the problems of environmental stress, nutrient supply imbalance and poor root adaptation in traditional transplantation and maintenance by constructing a systematic technical system of "hydroponics to promote root growth - gradient soil transfer - environmental adaptation".

[0106] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any variations and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the invention, fall within the protection scope defined by the claims of the present invention.

Claims

1. A method for the rejuvenation and maintenance management of transplanted landscape plants, comprising a hydroponic root-promoting stage, a gradient soil-transfer stage, and an environmental adaptation stage, with dynamic environmental control and cultivation management as its core, characterized in that: The dynamic environmental regulation includes environmental control during the hydroponic root promotion stage, environmental adaptation during the soil culture transition stage, hydroponic to soil culture connection operation, and dynamic monitoring and adaptive adjustment. The environmental control during the hydroponic root promotion stage includes light regulation, water temperature and dissolved oxygen management, and temperature and airflow control. In the water temperature and dissolved oxygen management, a new nutrient solution is added and replaced once a week.

2. The method for rejuvenation and maintenance management of transplanted landscape plants according to claim 1, characterized in that: The illumination control employs an intelligent light control system, providing a diffused light environment of 3000 lux to 5000 lux. The photosynthetically effective radiation wavelength range is 400 nm to 700 nm, with this wavelength band accounting for 60% to 100% of the total light intensity. The daily illumination duration is 10 to 12 hours. LED light strips are used for spectrum customization, maintaining a 3:1 ratio between blue light (450 nm to 470 nm) and red light (630 nm to 660 nm). Ultraviolet light irradiation is increased by 5% daily from 9:00 to 11:00 and from 15:00 to 17:

00. For every 1000 lux increase in light intensity, the nutrient solution concentration is increased by 5%.

3. The method for rejuvenation and maintenance management of transplanted landscape plants according to claim 2, characterized in that: The water temperature and dissolved oxygen management adopts a constant temperature water circulation system to control the temperature of the hydroponic solution at 21℃ to 23℃. The dissolved oxygen content in the water is maintained at 8mg / L to 10mg / L through a nano-aeration device. Enhanced aeration is carried out twice a day at 10:00 and 16:00, and the dissolved oxygen value reaches 10mg / L after each aeration.

4. The method for rejuvenation and maintenance management of transplanted landscape plants according to claim 3, characterized in that: The temperature and airflow control maintains the relative humidity of the hydroponic environment at 75% to 80%. The ultrasonic humidifier and dehumidifier are linked for control, keeping the humidity fluctuation range within 5%. The crossflow fan circulates the air every 20 minutes, with the airflow speed controlled at 0.3m / s to 0.5m / s.

5. The method for rejuvenation and maintenance management of transplanted landscape plants according to claim 4, characterized in that: The hydroponic root-promoting fertilization process includes three stages: the basic induction period, the root-promoting growth period, and the soil adaptation period. The basic induction period is from day 1 to day 5, using clean water for cultivation. The pH value of the root exudate is monitored daily. Once the pH value stabilizes at 5.5 to 6.5, a special hydroponic fertilizer at 0.5 times the standard concentration is added on day 5, with a nitrogen, phosphorus pentoxide, and potassium oxide mass ratio of 1:2:

1. Aeration is paused for 30 minutes after fertilization. The root-promoting growth period is from day 6 to day 15. When the new roots reach 1cm to 2cm in length, the fertilizer concentration is increased to [a higher concentration]. The standard concentration was 1 times, and fertilizer was applied by drip irrigation at a flow rate of 50 ml / h during the peak light period from 10:00 to 14:00 every day. At the same time, the dissolved oxygen level was monitored and maintained at 8 mg / L to 10 mg / L. The soil adaptation period was from the 16th to the 20th day. When the root length reached 3 cm to 5 cm, the fertilizer concentration was gradually reduced to 0.3 times the standard concentration. The daily application amount was 90% of the previous day's liquid fertilizer amount, and 5% of the total fertilizer amount of soil substrate extract was added. This extract was prepared by soaking leaf mold and water at a mass ratio of 1:5 for 24 hours and then filtering.

6. The method for rejuvenation and maintenance management of transplanted landscape plants according to claim 5, characterized in that: The environmental adaptation during the soil cultivation transition stage includes light gradient acclimatization, temperature and humidity synergistic regulation, and soil aeration optimization. The light gradient acclimatization is carried out from day 1 to day 15 after soil cultivation and thereafter. The temperature and humidity synergistic regulation adopts diurnal temperature management, with daytime temperature of 23℃ to 27℃ and nighttime temperature of 17℃ to 19℃, and the diurnal temperature difference is less than 8℃. The air humidity is maintained at 70% to 75% in the first week of cultivation, 65% to 70% in the second week, and 60% to 65% in the third week. The soil aeration optimization adopts a high-ridge shallow planting mode, with a ridge height of 15cm to 20cm and a planting depth 3cm to 5cm greater than that of hydroponics. Four to six PVC ventilation blind pipes with a diameter of 10mm are laid per square meter, with a hole density of 20 holes / meter in the pipe body. A centrifugal fan is connected to perform aeration for 30 minutes each at 9:00 and 15:00 every day, with an airflow pressure of 0.02MPa. The substrate surface is covered with a 5cm thick composite covering layer of sawdust and coarse sand with a volume ratio of 2:

1.

7. A method for the rejuvenation and maintenance management of transplanted landscape plants according to claim 6, characterized in that: The hydroponic-to-soil transition operation includes root pretreatment, substrate formulation and transplanting, and seedling establishment period management. The root pretreatment is carried out when the hydroponic roots grow to 3cm to 5cm and have no less than 5 new roots. Fertilization is stopped and the plants are cultured in clean water for 24 hours. After pruning rotten roots, the plants are soaked in a 500-fold carbendazim solution for 15 minutes. After removing the plants, they are transplanted while retaining 10% moisture. The substrate formulation and transplanting adopt a three-level substrate system.

8. A method for the rejuvenation and maintenance management of transplanted landscape plants according to claim 7, characterized in that: The seedling establishment period management involves a fully enclosed seedling establishment period for the first 7 days after transplanting, with a temporary shade shed providing 70% shading. Foliar spraying is carried out at 9:00 and 16:00 daily. Starting from the 8th day, the shade shed is gradually uncovered, and ventilation is increased by 1 hour daily until full ventilation is achieved on the 14th day. During the seedling establishment period, a 0.2% potassium dihydrogen phosphate solution is sprayed on the leaves.

9. A method for the rejuvenation and maintenance management of transplanted landscape plants according to claim 8, characterized in that: The dynamic monitoring and adaptive adjustment include physiological index detection and environmental response adjustment. Leaf relative water content, chlorophyll SPAD value, and root activity are measured weekly. If the leaf wilting rate exceeds 10%, a shade structure is activated and the air humidity is increased to 80%. The environmental response adjustment includes operations under any of the following conditions: When yellowing of new leaves is detected, increase the proportion of red light by 20% and spray the leaves with a 0.1% chelated iron solution. When blackening of the roots is detected, reduce the soil moisture to 55% and increase the aeration frequency to 3 times a day; When growth stagnation is detected, increase the daytime temperature by 2°C to 3°C and extend the light exposure by 1 hour.

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