A composition for preventing poplar and willow from falling flowers in the same year and its application and a falling flower prevention agent

Abstract

This invention relates to a composition and its application for controlling the shedding of poplar and willow catkins in the same year, and to a catkin control agent, relating to the field of catkin control. The composition for controlling the shedding of poplar and willow catkins in the same year comprises naphthaleneacetic acid, ethephon, triacontanol, and indolebutyric acid in a mass ratio of (32-480):(928-13920):(0.8-3):(15-57). This invention mainly utilizes the appropriate proportions of naphthaleneacetic acid, ethephon, triacontanol, and indolebutyric acid in combination. The components synergistically enhance each other, rapidly promoting the shedding of female inflorescences during the flowering period of poplar or willow trees in the same year, resulting in a significant catkin-shedding effect. Furthermore, it is safe for the trees, providing a new method for controlling the shedding of poplar and willow catkins in the same year, with wide applications.

Description

Technical Field

[0001] This invention relates to the field of controlling cottonwood fluff, and more particularly to a composition for controlling cottonwood fluff in the same year of poplar and willow trees, its application, and a cottonwood fluff control agent. Background Technology

[0002] Poplar and willow trees, as widely planted fast-growing tree species, play a crucial role in many fields such as forestry ecological construction, timber production, and urban and rural greening. They have many advantages, such as rapid growth, strong adaptability, and easy propagation, and are widely used in various planting types, including shelterbelts, timber forests, and urban street trees.

[0003] However, poplar and willow trees face a significant and thorny problem during their growth – shedding of catkins. These catkins primarily originate from seeds produced by female trees during the reproductive season. These seeds, accompanied by white, fluffy material, are dispersed by wind. Every spring, large quantities of catkins are carried by the wind, causing severe pollution to the urban environment, affecting air quality, and significantly increasing the concentration of inhalable particulate matter in the air. This poses a potential hazard to people's respiratory systems and can easily trigger allergic reactions such as itchy skin, red and swollen eyes, and respiratory discomfort, threatening people's health. Furthermore, catkins can adversely affect urban traffic and power facilities. For example, catkins accumulating on road surfaces may affect vehicle safety, and catkins adhering to electrical equipment may cause short circuits and other malfunctions. Therefore, the problem of catkin shedding has become a significant factor restricting the sustainable use of poplar trees and impacting people's quality of life, urgently requiring effective prevention and control measures. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a composition for controlling the shedding of poplar and willow catkins in the current year, its application, and a catkin control agent.

[0005] In a first aspect, the present invention provides a composition for controlling the shedding of catkins in the same year of poplar and willow trees, comprising naphthaleneacetic acid, ethephon, triacontanol and indolebutyric acid in a mass ratio of (32-480):(928-13920):(0.8-3):(15-57).

[0006] As an example, the mass ratio of naphthaleneacetic acid in the above-mentioned composition for controlling the shedding of poplar and willow catkins in the current year can be 32, 50, 75, 90, 200, 240, 260, 295, 300, 320, 350, 380, 400, 420, 450, 465, 480, or any range between the aforementioned values, and the mass ratio of ethephon can be 928, 1000, 2050, 4050, 505. The mass ratio of triacontanol can be 0, 8050, 9050, 10050, 11050, 11850, 12050, 13920, or any of the aforementioned values. The mass ratio of indolebutyric acid can be 0.8, 1, 1.5, 2.0, 2.5, 3, or any of the aforementioned values.

[0007] Further, the mass ratio of the naphthaleneacetic acid, the ethephon, the triacontanol and the indolebutyric acid is (80-280):(2320-8120):(0.8-1.2):(15-20).

[0008] Further, the mass ratio of the naphthaleneacetic acid, the ethephon, the triacontanol, and the indolebutyric acid is 200:5800:2:38.

[0009] Secondly, the present invention provides the application of the composition described in the first aspect for controlling the annual shedding of poplar and willow catkins in the control of annual shedding of poplar and willow catkins.

[0010] Thirdly, the present invention provides the application of the composition described in the first aspect for controlling the annual shedding of poplar and willow catkins in the preparation of a catkin control agent.

[0011] Furthermore, the formulation of the pollen control agent includes at least one of aqueous solution, microemulsion, powder, and suspension.

[0012] Fourthly, the present invention provides a pollen control agent comprising: The composition for preventing the shedding of poplar and willow catkins in the current year as described in any one of the first aspects; And water.

[0013] Furthermore, the solid content of the pollen control agent is 2.41% to 8.64% by mass percentage.

[0014] Furthermore, the solid content of the pollen control agent is 6.04% by mass percentage.

[0015] Furthermore, when using the product, the catkin control agent is injected into the trunk of female poplar or willow trees using the infusion method, once a year; The dosage of the pollen control agent is 45mL-55mL per 10cm of poplar diameter at breast height.

[0016] The technical solutions provided in the embodiments of the present invention have at least the following advantages compared with the prior art: This invention provides a composition and its application for controlling the shedding of cottonwood and willow catkins in the same year, as well as a catkin control agent. This invention mainly utilizes a suitable ratio of naphthaleneacetic acid, ethephon, triacontanol, and indolebutyric acid in combination, such as... Figure 1 As shown, the four components work synergistically to form a complete positive feedback loop, which can rapidly promote the shedding of female inflorescences during the flowering period of poplar or willow trees in the same year, resulting in a significant effect on catkin shedding. It is also safe for the trees, providing a new method for the prevention and control of catkin shedding in poplar and willow trees in the same year, with a wide range of applications. Attached Figure Description

[0017] Figure 1 : A schematic diagram of the mechanism of action of each component in the composition for preventing the shedding of poplar and willow catkins in the current year provided in the embodiments of the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that, unless otherwise specified or indicated, the raw materials involved in the composition for controlling the shedding of poplar and willow catkins in the current year provided by this invention, such as naphthaleneacetic acid, ethephon, triacontanol, and indolebutyric acid, can be prepared in-house according to the preparation process disclosed in the prior art or directly compounded from commercially available products in proportion. At the same time, unless otherwise specified or indicated, the preparation process operation steps and parameters involved can be carried out according to the preparation process disclosed in the prior art or using existing equipment, and will not be elaborated in detail in this invention document.

[0020] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Experimental methods in the following embodiments, unless otherwise specified, are generally performed according to national standards. If no corresponding national standard exists, then generally accepted international standards, conventional conditions, or conditions recommended by the manufacturer are followed.

[0021] Example 1 This example provides a composition for controlling the shedding of poplar and willow catkins in the same year, comprising naphthaleneacetic acid, ethephon, triacontanol and indolebutyric acid in a mass ratio of 80:2320:1:19.

[0022] Based on the above-mentioned composition for controlling the annual shedding of poplar and willow catkins, this example also provides a catkin control agent: the above-mentioned composition for controlling the annual shedding of poplar and willow catkins is added to an appropriate amount of water according to the mass ratio and mixed evenly to obtain an aqueous agent with a solid content of 2.41%.

[0023] Example 2 This example provides a composition for controlling the shedding of poplar and willow catkins in the same year, comprising naphthaleneacetic acid, ethephon, triacontanol and indolebutyric acid in a mass ratio of 120:3480:1:19.

[0024] Based on the above-mentioned composition for controlling the annual shedding of poplar and willow catkins, this example also provides a catkin control agent: the above-mentioned composition for controlling the annual shedding of poplar and willow catkins is added to an appropriate amount of water according to the mass ratio and mixed evenly to obtain an aqueous agent with a solid content of 3.62%.

[0025] Example 3 This example provides a composition for controlling the shedding of poplar and willow catkins in the same year, comprising naphthaleneacetic acid, ethephon, triacontanol and indolebutyric acid in a mass ratio of 160:4640:1.5:28.5.

[0026] Based on the above-mentioned composition for controlling the annual shedding of poplar and willow catkins, this example also provides a catkin control agent: the above-mentioned composition for controlling the annual shedding of poplar and willow catkins is added to an appropriate amount of water according to the mass ratio and mixed evenly to obtain an aqueous agent with a solid content of 4.83%.

[0027] Example 4 This example provides a composition for controlling the shedding of poplar and willow catkins in the same year, comprising naphthaleneacetic acid, ethephon, triacontanol and indolebutyric acid in a mass ratio of 200:5800:2:38.

[0028] Based on the above-mentioned composition for controlling the annual shedding of poplar and willow catkins, this example also provides a catkin control agent: the above-mentioned composition for controlling the annual shedding of poplar and willow catkins is added to an appropriate amount of water according to the mass ratio and mixed evenly to obtain an aqueous agent with a solid content of 6.04%.

[0029] Example 5 This example provides a composition for controlling the shedding of poplar and willow catkins in the same year, comprising naphthaleneacetic acid, ethephon, triacontanol and indolebutyric acid in a mass ratio of 240:6960:2.5:47.5.

[0030] Based on the above-mentioned composition for controlling the annual shedding of poplar and willow catkins, this example also provides a catkin control agent: the above-mentioned composition for controlling the annual shedding of poplar and willow catkins is added to an appropriate amount of water according to the mass ratio and mixed evenly to obtain an aqueous agent with a solid content of 7.25%.

[0031] Example 6 This example provides a composition for controlling the shedding of poplar and willow catkins in the same year, comprising naphthaleneacetic acid, ethephon, triacontanol and indolebutyric acid in a mass ratio of 280:8120:3:57.

[0032] Based on the above-mentioned composition for controlling the annual shedding of poplar and willow catkins, this example also provides a catkin control agent: the above-mentioned composition for controlling the annual shedding of poplar and willow catkins is added to an appropriate amount of water according to the mass ratio and mixed evenly to obtain an aqueous agent with a solid content of 8.46%.

[0033] Example 7 This example provides a composition and a pollen control agent for controlling the shedding of poplar and willow catkins in the same year, which differs from Example 1 in that: (1) The mass ratio of naphthaleneacetic acid, ethephon, triacontanol and indolebutyric acid is 32:928:0.8:15.

[0034] Example 8 This example provides a composition and a pollen control agent for controlling the shedding of poplar and willow catkins in the same year, which differs from Example 1 in that: (1) The mass ratio of naphthaleneacetic acid, ethephon, triacontanol and indolebutyric acid is 480:13920:3:57.

[0035] Example 9 This example provides a composition and a pollen control agent for controlling the shedding of poplar and willow catkins in the same year, which differs from Example 1 in that: (1) The mass ratio of naphthaleneacetic acid, ethephon, triacontanol and indolebutyric acid is 100:2900:1:19.

[0036] Comparative Example 1 This example provides a composition and a pollen control agent for controlling the shedding of poplar and willow catkins in the same year, which differs from Example 4 only in that: (1) No triacontanol and indolebutyric acid were added.

[0037] Comparative Example 2 This example provides a composition and a pollen control agent for controlling the shedding of poplar and willow catkins in the same year, which differs from Example 4 only in that: (1) No ethephon was added.

[0038] Comparative Example 3 This example provides a composition and a pollen control agent for controlling the shedding of poplar and willow catkins in the same year, which differs from Example 4 only in that: (1) No naphthaleneacetic acid was added.

[0039] Comparative Example 4 This example provides a composition and a pollen control agent for controlling the shedding of poplar and willow catkins in the same year, which differs from Example 4 only in that: (1) The mass ratio of naphthaleneacetic acid, ethephon, triacontanol and indolebutyric acid is 5800:200:2:38.

[0040] Comparative Example 5 This example provides a composition and a pollen control agent for controlling the shedding of poplar and willow catkins in the same year, which differs from Example 4 only in that: (1) The mass ratio of naphthaleneacetic acid, ethephon, triacontanol and indolebutyric acid is 5800:0:0:0.

[0041] Test case The purpose of this test case is to examine the control effect of the cotton-shedding agent provided in the examples and comparative examples. The cotton-shedding agent was injected into the trunks of female poplar or willow trees using the infusion method, once a year. The dosage of the agent was 50 mL per 10 cm of poplar diameter at breast height (DBH). Before application, female poplar trees with a DBH of 25-35 cm were selected, branches were marked, and the number of cotton-shedding trees on the female trees before application was counted. Fourteen days after application, the number of remaining cotton-shedding trees on the marked branches was counted. Three trees were used in each group, and three branches were marked on each tree for counting. Trees not treated served as a blank control group.

[0042] The test results are shown in Tables 1-13.

[0043] Table 1 Test Results of Example 1 As shown in Table 1, after 14 days of treatment, the average shedding rate of poplar catkins in the treated group was 75.19%, while the number of poplar catkins in the control group remained basically unchanged. Furthermore, the subsequent leaf growth of the poplar trees was normal, and no leaf drop or yellowing occurred. This indicates that the composition for controlling the shedding of poplar and willow catkins in the current year in this embodiment can significantly promote the shedding of female poplar catkins, reduce catkin drift, and has no adverse effects on the growth of poplar trees.

[0044] Table 2 Test Results of Example 2 As shown in Table 2, 14 days after treatment, the average shedding rate of poplar catkins in the treated group was 81.33%, while the number of poplar catkins in the control group remained basically unchanged. Furthermore, the subsequent leaf growth of the poplar trees was normal, and no leaf drop or yellowing occurred. This indicates that the composition for controlling the shedding of poplar and willow catkins in the current year in this embodiment can significantly promote the shedding of female poplar catkins, reduce catkin drift, and has no adverse effects on the growth of poplar trees.

[0045] Table 3 Test Results of Example 3 As shown in Table 3, 14 days after treatment, the average shedding rate of poplar catkins in the treated group was 86.77%, while the number of poplar catkins in the control group remained basically unchanged. Furthermore, the subsequent leaf growth of the poplar trees was normal, and no leaf drop or yellowing occurred. This indicates that the composition for controlling the shedding of poplar and willow catkins in the current year in this embodiment can significantly promote the shedding of female poplar catkins, reduce catkin drift, and has no adverse effects on the growth of poplar trees.

[0046] Table 4 Test Results of Example 4 As shown in Table 4, 14 days after treatment, the average shedding rate of poplar catkins in the treated group was 95.84%, while the number of poplar catkins in the control group remained basically unchanged. Furthermore, the subsequent leaf growth of the poplar trees was normal, and no leaf drop or yellowing occurred. This indicates that the composition for controlling the shedding of poplar and willow catkins in the current year in this embodiment can significantly promote the shedding of female poplar catkins, reduce catkin drift, and has no adverse effects on the growth of poplar trees.

[0047] Table 5 Test Results of Example 5 As shown in Table 5, 14 days after treatment, the average shedding rate of poplar catkins in the treated group was 95.96%, while the number of catkins in the control group remained basically unchanged. However, some leaves in the treated group showed yellowing at the leaf edges. This indicates that although the dosage can maintain a high shedding rate, slight phytotoxicity has begun to appear, but it is still within the acceptable range.

[0048] Table 6 Test Results of Example 6 As shown in Table 6, after 14 days of treatment, the average shedding rate of poplar catkins in the treated group was 96.71%, while the number of poplar catkins in the control group remained basically unchanged; however, the treated group also experienced a small amount of leaf loss, which was still within acceptable limits.

[0049] Table 7 Test Results of Example 7 As shown in Table 7, 14 days after the treatment, the average shedding rate of poplar catkins in the treated group was 71.22%, while the number of poplar catkins in the control group remained basically unchanged; the poplar trees in the treated group grew normally with no significant changes.

[0050] Table 8 Test Results of Example 8 As shown in Table 8, 14 days after the treatment, the average shedding rate of poplar catkins in the treated group was 97.16%, while the number of poplar catkins in the control group remained basically unchanged; however, a small number of leaves fell in the treated group.

[0051] Table 9 Test Results of Example 9 As shown in Table 9, 14 days after the treatment, the average shedding rate of poplar catkins in the treated group was 73.2%, while the number of poplar catkins in the control group remained basically unchanged; the poplar trees in the treated group grew normally without significant changes.

[0052] Table 10 Test Results of Comparative Example 1 As shown in Table 10, 14 days after application, the average shedding rate of poplar catkins was 65.74%, lower than that in Example 4 (95.84%), and some branches showed slight yellowing of leaf edges. This indicates that the addition of triacontanol and indolebutyric acid significantly enhanced the catkin shedding effect and reduced the phytotoxicity of ethephon.

[0053] Table 11 Test Results of Comparative Example 2 As shown in Table 11, after 14 days of medication, the average shedding rate of poplar catkins was 32.00%, which was much lower than that in Example 4 (95.84%), indicating that ethephon was the key component that promoted shedding.

[0054] Table 12 Test Results of Comparative Example 3 Table 12 shows that 14 days after application, the average shedding rate of poplar catkins was 52.66%, and the leaves showed obvious yellowing and premature leaf drop. This indicates that the addition of naphthaleneacetic acid can synergistically improve the shedding rate with ethephon while reducing phytotoxicity.

[0055] Table 13 Test Results of Comparative Example 4 As shown in Table 13, 14 days after the drug treatment, the average shedding rate of poplar catkins in the drug-treated group was 33.1%, while the number of poplar catkins in the control group remained basically unchanged; the poplar trees in the drug-treated group grew normally without significant changes.

[0056] Table 14 Test Results of Comparative Example 5 As shown in Table 14, after 14 days of treatment, the average shedding rate of poplar catkins in the treated group was 66.7%, significantly lower than that in Example 4. Furthermore, the treated group exhibited yellowing and shedding of leaves, indicating that, under the same ethylene utilization rate, the four-component composition of this application is more effective and safer. The number of poplar catkins in the control group remained essentially unchanged. Table 15 Summary of Fluff Falling and Pesticide Damage Furthermore, based on the above-mentioned experiment on controlling the shedding of poplar catkins in the same year, this test case uses willow as the research object and finds that the catkin control agent provided in the embodiments of the present invention also maintains excellent control effect on the shedding of willow catkins in the same year, with the average shedding rate of willow catkins maintained at over 95% (for example, the average shedding rates of willow catkins using the catkin control agents provided in Examples 4 and 5 were 95.85% and 95.96%, respectively).

[0057] Various embodiments of the present invention may exist in the form of a range; it should be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as a hard limitation on the scope of the invention; therefore, it should be considered that the range description has specifically disclosed all possible subranges and single numerical values ​​within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Furthermore, whenever a numerical range is referred to herein, it means including any referenced number (fraction or integer) within the range referred to.

[0058] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A composition for controlling the shedding of catkins from poplar and willow trees in the same year, characterized in that, It includes naphthaleneacetic acid, ethephon, triacontanol and indolebutyric acid in a mass ratio of (32-480):(928-13920):(0.8-3):(15-57).

2. The composition for controlling the shedding of poplar and willow catkins in the same year according to claim 1, characterized in that, The mass ratio of the naphthaleneacetic acid, the ethephon, the triacontanol and the indolebutyric acid is (80-280):(2320-8120):(0.8-1.2):(15-20).

3. The composition for controlling the shedding of poplar and willow catkins in the same year according to claim 1, characterized in that, The mass ratio of the naphthaleneacetic acid, the ethephon, the triacontanol, and the indolebutyric acid is 200:5800:2:

38.

4. The use of the composition for controlling annual cottonwood and willow catkin shedding as described in any one of claims 1-3 in controlling annual cottonwood and willow catkin shedding.

5. The use of the composition according to any one of claims 1-3 for controlling the shedding of poplar and willow catkins in the current year in the preparation of a catkin control agent.

6. The application according to claim 5, characterized in that, The formulation of the pollen control agent includes at least one of the following: aqueous solution, microemulsion, powder, and suspension.

7. A pollen-control agent, characterized in that, include: The composition for controlling annual catkin shedding of poplar and willow trees according to any one of claims 1-3; And water.

8. The pollen-control agent according to claim 7, characterized in that, The solid content of the pollen control agent is 2.41% to 8.64% by mass percentage.

9. The pollen-control agent according to claim 8, characterized in that, The solid content of the pollen control agent is 6.04% by mass percentage.

10. The pollen-control agent according to any one of claims 7-9, characterized in that, When using the product, inject the cotton-fall control agent into the trunk of female poplar or willow trees using the bottle infusion method, once a year. The dosage of the pollen control agent is 45mL-55mL per 10cm of poplar diameter at breast height.

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