Camellia low-yield forest reconstruction method suitable for unmanned aerial vehicle pollination

Abstract

The camellia low-yield forest transformation method suitable for unmanned aerial vehicle pollination of the application firstly plans the unmanned aerial vehicle pollination route, takes the distance between two routes as the row spacing and plant spacing of the camellia forest, and marks the single plant point; then observes whether the fruit of the camellia low-yield forest can be normally converted into oil, and the single plant that cannot be normally converted is counted as P, pollination is carried out according to the relationship of P accounting for the total number of plants, then based on the single plant fruit setting rate, the single plants are divided into three categories, the A class and C class single plants that are not in the single plant point are directly eliminated from the camellia low-yield forest; the B class single plants that are not in the single plant point select 1-4 plants as the mother plant D; the A class and C class single plants at the single plant point are cut short, and the bud strips of the mother plant D are used for grafting; then the single plant point lacking the single plant is transplanted or supplemented, and grafted; finally, cleaning and rechecking are carried out to obtain the planned camellia forest. The transformation method adjusts the single plant flowering period of the camellia forest to be consistent, improves the camellia yield, and solves the need of the camellia to adapt to the mechanized production.

Description

Technical Field

[0001] This invention belongs to the technical field of low-yield forest transformation methods, specifically relating to a method for transforming low-yield Camellia oleifera forests suitable for drone pollination. Background Technology

[0002] Low-yield camellia forests refer to camellia forests with trees aged 8-50 years and an oil yield of less than 15 kg / mu (fresh fruit yield of 300 kg / mu); and camellia forests with trees aged more than 50 years and an oil yield of less than 5 kg / mu (fresh fruit yield of 100 kg / mu).

[0003] The main reason for the low yield of Camellia oleifera forests is the lack of standardized management of Camellia oleifera varieties in the past, which has led to serious problems such as mixed varieties and inconsistent flowering periods in the existing production forests, resulting in low fruit set rate and low production capacity.

[0004] According to forestry industry standards, there are eight existing methods for transforming low-yield camellia oleifera forests: forest land clearing, density adjustment, pruning and shaping, deep digging and covering, rational fertilization, regeneration and transformation, and pest and disease control. However, none of these methods can fundamentally transform low-yield camellia oleifera forests.

[0005] Artificial pollination is an important means of improving crop fruit set rate, but it is costly and inefficient due to limitations in crop area and geographical conditions. With technological advancements, drone-assisted pollination is more cost-effective and efficient. However, in low-yield camellia oleifera forests, the inconsistent flowering periods of individual trees necessitate multiple pollinations to meet the pollination needs of all trees, failing to demonstrate the advantages of drone pollination. Therefore, transforming camellia oleifera forests to achieve uniform flowering periods is an urgent problem to be solved. Summary of the Invention

[0006] To address the technical problem of low fruit set rate in existing Camellia oleifera forests, this invention provides a method for transforming low-yield Camellia oleifera forests suitable for drone pollination. This method can adjust individual trees in low-yield Camellia oleifera forests to have a consistent flowering period, improve the working efficiency of drones, reduce the number of pollination sessions, lower costs, and increase the fruit set rate of low-yield Camellia oleifera forests.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows.

[0008] This invention provides a method for transforming low-yield camellia oleifera forests suitable for drone pollination, comprising the following steps:

[0009] Step 1: Before September of the first year, plan the flight routes for drone pollination, and use the distance between the two flight routes as the row spacing and plant spacing of the planned camellia oleifera forest, and mark the individual plant locations of the planned camellia oleifera forest.

[0010] Step 2: In September-October of the first year, observe whether the fruits of low-yield Camellia oleifera forests can be converted into oil normally. Individual trees that cannot be converted normally are counted as P.

[0011] (1) If the number of plants in P accounts for more than 70% of the total number of plants, the flowering time of the first single plant is used as the initial screening flowering period.

[0012] (2) If the number of plants with 30% ≤ P accounts for ≤ 70% of the total number of plants, the flowering time of 10%-30% of the individual plants is used as the initial screening flowering period;

[0013] (3) If the number of plants of P accounts for less than 30% of the total number of plants, the flowering time of more than 30% of the individual plants is used as the initial screening flowering period;

[0014] Step 3: In October-November of the first year, if the initial screening flowering period is (1) in Step 2, natural pollination is carried out on the low-yield Camellia oleifera forest; if the initial screening flowering period is (2) or (3) in Step 2, drones are used for pollination according to the drone pollination route planned in Step 1.

[0015] Step 4: In April-May of the following year, investigate the fruit set rate of individual trees in low-yield camellia oleifera forests; classify them into three categories according to the fruit set rate of individual trees: A<10%, B=10%-40%, and C>40%, and mark them accordingly;

[0016] Category A and C individual trees that are not located in the planned Camellia oleifera forest will be directly eliminated from the low-yield Camellia oleifera forest. For Category B individual trees that are not located in the planned Camellia oleifera forest, 1-4 healthy individual trees will be selected as mother trees for scion production (D) and fertilized. The remaining Category B individual trees that are not located in the planned Camellia oleifera forest will be dealt with or eliminated from the low-yield Camellia oleifera forest.

[0017] Step 5: From May 20 to June 10 of the second year, the Class A and Class C individual trees in the planned camellia oleifera forest will be pruned and grafted using the scions from the mother tree D collected in Step 4.

[0018] Diseased and pest-infested trees at individual locations within the planned camellia oleifera forest will be eliminated, thus decommissioning low-yield camellia oleifera forests.

[0019] In the single-plant sites of the planned Camellia oleifera forest that lack individual plants, transplant the Class B single plants that are not in the planned Camellia oleifera forest single-plant sites, or replant large seedlings that are 3 years or older, cut off the trunk, and graft them with scions from the scion mother plant D in the fourth step.

[0020] Step 6: After transplanting, replanting, and grafting are completed, all Camellia oleifera trees that are not located at the planned single-tree sites in the Camellia oleifera forest should be removed from the low-yield Camellia oleifera forest.

[0021] Step 7: Use the flowering period of individual plants in category B as the group flowering period of the camellia oleifera forest;

[0022] Step 8: In October of the following year, after collecting the fruits, pollinate the plants using drones according to the drone pollination route planned in Step 1 during the group flowering period. After pollination, fertilize all individual plants.

[0023] Step 9: In April of the third year, all individual plants were re-examined, and those plants with a fruit set rate not in the range of 10%-40% were marked.

[0024] Step 10: During the flowering period of the group in the third year, investigate the flowering period of the marked individual plants. If it coincides with the flowering period of the group, continue cultivation. If it does not coincide with the flowering period of the group, cut off the trunk and use the healthy scions of the individual plants for grafting to complete the transformation of the low-yield camellia forest.

[0025] Preferably, the process also includes an eleventh step, in which drones are used for pollination each year during the flowering period, following the drone pollination routes planned in the first step.

[0026] Preferably, in the first step, as many individual trees as possible in the low-yield camellia forest are located at the planned individual tree locations in the camellia forest.

[0027] Preferably, in the first step, the planned camellia oleifera forest is ≥5 mu (approximately 0.33 hectares) with a tree density ≥450 trees / hm². 2 .

[0028] Preferably, in the first step, the row spacing and plant spacing are both 4-5m.

[0029] Preferably, in steps four and eight, the fertilizer is organic fertilizer, and the application rate is 15-30 kg / plant.

[0030] Preferably, in the fourth step, the Class B individual trees that are not located at the planned Camellia oleifera forest individual tree sites are transplanted nearby.

[0031] Preferably, in the fourth step, the scion mother plant D is located at the edge of a low-yield camellia oleifera forest.

[0032] Preferably, in steps three and eight, the drone pollination flight altitude is 3-5m, the flight speed is 3-4m / s, the liquid volume per mu is 5-7L, and the pollen dosage is 1-20g / mu.

[0033] More preferably, the pollen is bee pollen specifically for pollinating Camellia oleifera.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] This invention provides a method for transforming low-yield Camellia oleifera forests suitable for drone pollination. By using the peak flowering period and fruit set rate of individual trees as transformation factors, the method adjusts the flowering period of individual Camellia oleifera trees to be uniform, thereby increasing yield and addressing the need for mechanized production. Experimental results show that the fruit set rate of individual trees in Camellia oleifera forests transformed using this method is 20%-40%. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the low-yield Camellia oleifera forest before transformation, which is a suitable method for transforming low-yield Camellia oleifera forests by drone pollination according to Embodiment 1 of the present invention.

[0038] Figure 2 This is a schematic diagram of the fourth step of the transformation method for low-yield camellia oleifera forests suitable for drone pollination according to Embodiment 1 of the present invention.

[0039] Figure 3 This is a schematic diagram of the fifth step of the transformation method for low-yield camellia oleifera forests suitable for drone pollination in Embodiment 1 of the present invention.

[0040] Figure 4 This is a schematic diagram of the eleventh step of the method for transforming low-yield camellia oleifera forests suitable for drone pollination according to Embodiment 1 of the present invention.

[0041] Figure 5 This is a schematic diagram of the eleventh step of the method for transforming low-yield camellia oleifera forests suitable for drone pollination according to Embodiment 1 of the present invention.

[0042] Figure 6 This is a schematic diagram illustrating the completed transformation of low-yield Camellia oleifera forests according to the method for transforming low-yield Camellia oleifera forests suitable for drone pollination in Embodiment 1 of the present invention. Detailed Implementation

[0043] To further understand the present invention, preferred embodiments of the present invention are described below. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, and not for limiting the scope of the claims of the present invention.

[0044] The present invention provides a method for transforming low-yield camellia oleifera forests suitable for drone pollination, comprising the following steps:

[0045] Step 1: Before September of the first year, the row spacing of the planned camellia oleifera forest is determined by the flight distance of the drone. In order to facilitate the growth of camellia oleifera, and in combination with cultivation techniques, the plant spacing and row spacing of the planned camellia oleifera forest are selected to be the same. The individual plant points of the planned camellia oleifera forest are marked. The preferred marking material is lime, and it is preferred to place as many individual plants as possible in the low-yield camellia oleifera forest at the individual plant points of the planned camellia oleifera forest.

[0046] Step 2: Determine the initial screening flowering period;

[0047] In September and October of the first year, observe whether the fruits of low-yield Camellia oleifera forests can be converted into oil normally (i.e., the seeds of Camellia oleifera cannot turn brown). The number of Camellia oleifera trees that cannot be converted normally is counted as P.

[0048] (1) If the number of plants of P accounts for more than 70% of the total number of plants, then the flowering time of the first single plant in the Camellia oleifera forest is used as the initial screening flowering time according to the order of flowering time.

[0049] (2) If the number of plants with 30% ≤ P accounts for ≤ 70% of the total number of plants, then the flowering period of the camellia oleifera forest is initially screened based on the flowering time of 10%-30% of the individual plants, according to the order of flowering time.

[0050] (3) If the number of plants of P accounts for less than 30% of the total number of plants, then the flowering time of the Camellia oleifera forest is initially screened based on the flowering time of more than 30% of the individual plants, according to the order of flowering time.

[0051] Step 3: In October-November of the first year, if the initial screening flowering period is (1) in step 2, the low-yield Camellia oleifera forest will be naturally pollinated due to the small number of flowers; if the initial screening flowering period is (2) or (3) in step 2, drones will be used for pollination according to the drone pollination route planned in step 1.

[0052] Step 4: In April-May of the second year, investigate the fruit set rate of individual trees in low-yield camellia forests; classify them into three categories according to the fruit set rate of individual trees: A<10%, B=10%-40%, and C>40% (Category A: individual trees with low fruit set rate are those whose flowering period is inconsistent with the appropriate flowering period; Category C: individual trees with excessively high fruit set rate are those of varieties with excessive self-pollination and fruit production; Category B: individual trees with fruit set rate of appropriate flowering period), and mark them accordingly.

[0053] Category A and C individual trees that are not located in the planned Camellia oleifera forest will be directly eliminated from the low-yield Camellia oleifera forest. For Category B individual trees that are not located in the planned Camellia oleifera forest, 1-4 healthy individual trees will be selected as mother trees for scion production (D) and fertilized. The remaining Category B individual trees that are not located in the planned Camellia oleifera forest will be dealt with or eliminated from the low-yield Camellia oleifera forest.

[0054] Step 5: From May 20th to June 10th of the second year, the Class A and Class C individual trees in the planned camellia oleifera forest will be pruned and grafted using the scions from the mother tree D collected in Step 4.

[0055] Diseased and pest-infested trees at individual locations within the planned camellia oleifera forest will be eliminated, thus decommissioning low-yield camellia oleifera forests.

[0056] In the single-plant sites of the planned Camellia oleifera forest that lack individual plants, the B-type single plants that are not in the planned Camellia oleifera forest single-plant sites to be treated are transplanted, preferably transplanted nearby, or large seedlings of 3 years or more are replanted, the trunk is cut off, and grafting is carried out using scions from the mother plant D.

[0057] Step 6: After transplanting, replanting, and grafting are completed, all Camellia oleifera trees that are not located at the planned single-tree sites in the Camellia oleifera forest should be removed from the low-yield Camellia oleifera forest.

[0058] Step 7: Use the flowering period of individual plants in category B as the group flowering period of the camellia oleifera forest;

[0059] Step 8: In October of the following year, after collecting the fruits, pollinate the plants using drones according to the drone pollination route planned in Step 1 during the group flowering period. After pollination, fertilize all individual plants.

[0060] Step 9: In April of the third year, all individual plants were re-examined, and those plants with a fruit set rate not in the range of 10%-40% were marked.

[0061] Step 10: During the third year's group flowering period, investigate the flowering period of the marked individual plants. If it coincides with the group flowering period, maintain the original cultivation and management model. If it does not coincide with the group flowering period, cut off the trunk and use the healthy scions of the individual plants for grafting to complete the transformation of the low-yield camellia forest.

[0062] Step 11: Continue cultivation. During the annual group flowering period, use drones to pollinate the plants according to the drone pollination routes planned in Step 1.

[0063] In the above technical solutions, the preferred plan is to cultivate ≥5 mu of camellia oleifera forest with a plant density of ≥450 plants / hm². 2 The planned fruit setting rate of a single camellia oleifera plantation should be ≥10%, preferably ≥20%.

[0064] In the above technical solution, the fertilizer is preferably organic fertilizer, and the amount of fertilizer applied is 15-30 kg / plant. Organic fertilizer can be obtained commercially, and there are no special restrictions in this invention.

[0065] In the above technical solution, the preferred row and plant spacing is 4-5m, the drone pollination altitude is 3-5m, the flight speed is 3-4m / s, the liquid volume per mu (667 square meters) is 5-7L, and the pollen dosage is 1-20g / mu. Pollination should be carried out during the peak flowering period of the camellia oleifera forest. Only during the peak flowering period can it be ensured that more flowers can accept cross-pollination pollen in one pollination, leading to successful fruit set. The optimal pollination time is near the peak flowering period and on a sunny day after rain. The preferred pollen is bee pollen specifically for camellia oleifera pollination, which can be obtained through existing technologies, such as the bee pollen in the patent "A Method for Collecting and Using Bee Pollen for Camellia Oleifera Pollination" (CN118140805A).

[0066] In this invention, robust refers to a tree free from pests and diseases, and is preferably a single tree with a relatively large number of spring shoots.

[0067] In this invention, apart from the modification method mentioned in this invention, the camellia oleifera forest can be cultivated using existing cultivation techniques every year.

[0068] The terminology used in this invention generally has the meanings commonly understood by those skilled in the art, unless otherwise stated.

[0069] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to embodiments.

[0070] In the following embodiments, various processes and methods not described in detail are conventional methods known in the art. Unless otherwise specified, the materials, reagents, apparatus, instruments, equipment, etc., used in the following embodiments are commercially available.

[0071] Example 1

[0072] A low-yield camellia oleifera forest, 5 mu (approximately 0.33 hectares) with a total of 565 trees, currently spaced 2m x 2m in rows. Flowering periods are inconsistent. See the diagram below. Figure 1 As shown, the modification method is as follows:

[0073] Step 1: Before September 2021, plan the flight path for drone pollination, plan the row spacing and plant spacing of the camellia oleifera forest, determine the drone flight distance as 4m, and the row spacing and plant spacing of the camellia oleifera forest as 4m×4m. Use lime to mark the individual plant locations of the planned camellia oleifera forest at 4m×4m intervals, and ensure that as many individual plants as possible in the low-yield camellia oleifera forest are located at the individual plant locations of the planned camellia oleifera forest.

[0074] Step 2: Determine the initial screening flowering period;

[0075] On October 23, 2021, we observed whether the fruits of low-yield Camellia oleifera forests could be converted into oil normally (i.e., the seeds of Camellia oleifera could not turn brown). The number of Camellia oleifera trees that could not be converted normally was counted as P.

[0076] The investigation found that one Camellia oleifera plant's fresh fruit could not be converted into oil normally (denoted as P), accounting for 0.18% of the total number of plants. Since the number of plants with P accounted for less than 30% of the total number of plants, the flowering time of the Camellia oleifera forest was initially screened based on the flowering time of more than 30% of the individual plants.

[0077] Step 3: November 5, 2021

[0078] Pollination was carried out using drones according to the drone pollination route planned in the first step. The flight distance was 4m, the flight height was 4m, and the flight speed was 3m / s. 10g of pollen was applied per acre, and the total liquid volume was 6L. The pollen was bee pollen specially used for camellia pollination.

[0079] Step 4: On April 5-6, 2022, the fruit set rate of individual plants was investigated, and the results are as follows:

[0080] Category A (fruit set rate per plant <10%): 179 plants;

[0081] Category B (fruit set rate per plant: 10%-40%): 362 plants;

[0082] Category C (fruit set rate per plant > 40%): 23 plants;

[0083] Eliminate Category A and Category C individual trees in locations not included in the planned Camellia oleifera forest: 102 Category A individual trees and 12 Category C individual trees in locations not included in the planned Camellia oleifera forest.

[0084] There are 237 Class B trees in single-tree sites that are not in the planned Camellia oleifera forest. Four of these healthy Class B trees located on the edge will be retained as mother trees for scion production (D) and organic fertilizer will be applied at a rate of 2-3 kg / tree. The remaining Class B trees in single-tree sites that are not in the planned Camellia oleifera forest will be eliminated from the low-yield Camellia oleifera forest.

[0085] Schematic diagram as follows Figure 2 As shown;

[0086] Step 5: June 1, 2022

[0087] The Class A and Class C individual trees at the planned Camellia oleifera forest sites were pruned and grafted with scions from mother tree D; a total of 87 trees were grafted.

[0088] One single longhorn beetle was found to be severely damaging a planned camellia oleifera forest, and the forest was removed from the low-yield camellia oleifera forest.

[0089] In the single-plant sites of the planned camellia oleifera forest that lack individual plants, after replanting large seedlings that are 3 years or older, graft them onto the scion mother plant D.

[0090] Schematic diagram as follows Figure 3 As shown;

[0091] Step 6: After transplanting, replanting, and grafting are completed, remove all individual trees that are not located at the planned camellia oleifera forest sites; the final camellia oleifera garden has a total of 211 trees.

[0092] Step 7: The flowering period of individual B-type trees is taken as the group flowering period of the Camellia oleifera forest. The flowering period of Camellia oleifera is in early November, but the specific time may vary depending on the weather.

[0093] Step 8: On October 23, 2022, collect the fruit;

[0094] Step 9: On November 3, 2022, a drone was used for pollination according to the drone pollination route planned in Step 1. The flight distance was 4m, the flight height was 4m, the flight speed was 3m / s, 10g of pollen was applied per acre, and the total liquid volume was 6L. The pollen was bee pollen specifically for camellia pollination.

[0095] Step 10: On November 14, 2022, apply organic fertilizer to all individual plants, with an application rate of 2-3 kg / plant;

[0096] Step 11: A follow-up inspection in early April 2023 revealed that one individual plant had a fruit set rate outside the 10%-40% range, as illustrated in the diagram below. Figure 4 As shown, mark the grafting points and use a single, robust scion for grafting, as illustrated in the diagram. Figure 5 As shown in the diagram, the resulting camellia oleifera forest after the transformation of low-yield camellia oleifera forests is as follows. Figure 6 As shown.

[0097] Experimental tests showed that the flowering period of the camellia oleifera forest was consistent in 2023. A survey conducted in April 2024 showed that the fruit setting rate per tree ranged from 21.6% to 31.7%, with an average fruit setting rate of 25.1%. Through adjustments to the flowering period and drone-assisted pollination, the camellia oleifera forest achieved high and stable yields.

[0098] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the embodiments. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A method for transforming low-yield camellia oleifera forests suitable for unmanned aerial vehicle pollination, characterized in that, The method comprises the following steps: The first step: before September of the first year, plan the unmanned aerial vehicle pollination route, and mark the single point of the planned camellia oleifera forest according to the distance between two routes as the row spacing and plant spacing of the planned camellia oleifera forest; The second step: from September to October of the first year, observe whether the fruits of the low-yield camellia oleifera forest can be normally converted into oil, and count the single plants that cannot be normally converted as P; (1) if the ratio of the number of P to the total number of plants is greater than 70%, the flowering time of the first single plant is the initial screening flowering period; (2) if the ratio of the number of P to the total number of plants is 30% to 70%, the flowering time of 10% to 30% single plants is the initial screening flowering period; (3) if the ratio of the number of P to the total number of plants is less than 30%, the flowering time of more than 30% single plants is the initial screening flowering period; The third step: from October to November of the first year, if the initial screening flowering period is (1) in the second step, the low-yield camellia oleifera forest is naturally pollinated; if the initial screening flowering period is (2) or (3) in the second step, the unmanned aerial vehicle pollinates according to the unmanned aerial vehicle pollination route planned in the first step; The fourth step: from April to May of the second year, investigate the single fruit setting rate of the low-yield camellia oleifera forest; divide the single plants into three categories according to the single fruit setting rate A < 10%, B = 10% to 40%, and C > 40%, and mark them respectively; The A class and C class single plants that are not in the single point of the planned camellia oleifera forest are directly eliminated from the low-yield camellia oleifera forest; the B class single plants that are not in the single point of the planned camellia oleifera forest select 1 to 4 healthy single plants as the scion mother plants D and fertilize the rest of the B class single plants that are not in the single point of the planned camellia oleifera forest, and the rest of the B class single plants that are not in the single point of the planned camellia oleifera forest are treated or eliminated from the low-yield camellia oleifera forest; The fifth step: from May 20 to June 10 of the second year, the A class and C class single plants in the single point of the planned camellia oleifera forest are short-cut, and the scion strips of the scion mother plants D in the fourth step are grafted; The diseased and insect-infested single plants in the single point of the planned camellia oleifera forest are eliminated from the low-yield camellia oleifera forest; In the single point of the planned camellia oleifera forest that lacks single plants, the B class single plants that are not in the single point of the planned camellia oleifera forest are transplanted or 3-year-old or older seedlings are supplemented and grafted with the scion strips of the scion mother plants D in the fourth step; The sixth step: after the transplantation, supplementation and grafting are completed, all the single plants that are not in the single point of the planned camellia oleifera forest are removed from the low-yield camellia oleifera forest; The seventh step: the flowering period of the B class single plants is the group flowering period of the camellia oleifera forest; The eighth step: in October of the second year, after the fruits are collected, the unmanned aerial vehicle pollinates according to the unmanned aerial vehicle pollination route planned in the first step at the group flowering period, and fertilizes all the single plants after pollination; The ninth step: in April of the third year, all the single plants are rechecked, and the single plants with a single fruit setting rate not in the range of 10% to 40% are marked; The tenth step: at the group flowering period of the third year, the flowering period of the marked single plants is investigated, if it is consistent with the group flowering period, the single plants are continued to be cultivated, and if it is inconsistent with the group flowering period, the single plants are short-cut, and the single plants are grafted with healthy scion strips, and the low-yield camellia oleifera forest is reconstructed.

2. The method for transforming low-yield Camellia oleifera forest suitable for drone pollination according to claim 1, characterized in that, The eleventh step: in the group flowering period of each subsequent year, the unmanned aerial vehicle pollinates according to the unmanned aerial vehicle pollination route planned in the first step.

3. The method for transforming low-yield Camellia oleifera forests suitable for drone pollination according to claim 1 or 2, characterized in that, In the first step, as many single plants in the low-yield camellia oleifera forest as possible are located in the single point of the planned camellia oleifera forest.

4. The method for transforming low-yield Camellia oleifera forests suitable for drone pollination according to claim 1 or 2, characterized in that, In the first step, the planned tea-oil camellia forest is ≥ 5 mu, and the plant density is ≥ 450 plants / hm 2 .

5. The method for transforming low-yield Camellia oleifera forests suitable for drone pollination according to claim 1 or 2, characterized in that, In the first step, the row spacing and plant spacing are both 4 to 5 m.

6. The method for transforming low-yield Camellia oleifera forests suitable for drone pollination according to claim 1 or 2, characterized in that, In the fourth and eighth steps, the fertilizer is organic fertilizer, and the application amount is 15-30 kg per plant.

7. The method for transforming low-yield Camellia oleifera forests suitable for drone pollination according to claim 1 or 2, characterized in that, In the fourth step, the mother plant D is located at the edge of the low-yield camellia oleifera forest.

8. The method for transforming low-yield Camellia oleifera forest suitable for drone pollination according to claim 1 or 2, characterized in that, In the fifth step, the B type plants not at the planned single plant point of the camellia oleifera forest are transplanted nearby.

9. The method for transforming low-yield Camellia oleifera forest suitable for drone pollination according to claim 1 or 2, characterized in that, In the third and eighth steps, the flight height of the unmanned aerial vehicle pollination is 3-5 m, the flight speed is 3-4 m / s, the liquid amount per mu is 5-7 L, and the pollen amount is 1-20 g per mu.

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