An improved forest herbicide of the type of water-dispersible granules of terbuthylazine and hexazinone

Abstract

The present application belongs to the technical field of chemical herbicides, and particularly relates to a modified terbuthylazine-cyclozolinone water dispersible granule type forest herbicide. The present application provides a modified terbuthylazine-cyclozolinone water dispersible granule type forest herbicide, raw material composition of which comprises resin-coated terbuthylazine, resin-coated cyclozolinone and dispersant, and the specific use mode is high-altitude spraying, and the advantages include: 1. Terbuthylazine and cyclozolinone are coated by resin, which ensures that they are difficult to be absorbed by the leaves of economic forest trees when contacting the leaves, and can be effectively released after dropping into weeds and shrubs and soil, and finally absorbed by weeds and shrubs, so that the slow-release and effective herbicidal function is ensured; 2. The dispersant can further improve the fluidity of the forest herbicide suspension, i.e. reduce the viscosity, so that the residual time and residual amount of the herbicide on the leaves of economic forest trees are greatly reduced, and the economic forest trees first contacting the herbicide are further protected.

Description

Technical Field

[0001] This invention belongs to the field of chemical herbicide technology, and particularly relates to a modified terbutaline-cycloazinone water-dispersible granule form of forest herbicide. Background Technology

[0002] Terbutaline refers to a relatively common selective systemic triazine herbicide. Its advantages include: it can be used pre- and post-emergence, has a short residual period, a broader spectrum of weed control, good crop safety, strong compatibility with other herbicides, no resistance to continuous use, and relatively low cost.

[0003] Cycloazolinone is a systemic, selective, post-emergence contact herbicide belonging to the triazine class. It primarily inhibits plant photosynthesis. Cycloazolinone can be absorbed by the plant's roots and leaves, and is translocated through the xylem, disrupting its metabolism and leading to plant death. The advantages of cycloazolinone include: strong killing effect on weeds and shrubs, long-lasting efficacy, low toxicity, and no skin sensitization.

[0004] When terbutaline-cycloazinone herbicide is used for forest weed control, it has a good control effect on weeds such as ryegrass, crabgrass, foxtail, reeds and barnyard grass, as well as miscellaneous woody plants such as honeysuckle, aspen, paper mulberry and ash.

[0005] Furthermore, water-dispersible granules refer to a granular material form that automatically disintegrates and disperses into a suspension upon contact with water. Therefore, terbutaline-cycloazinone water-dispersible granules have advantages in water, including good dispersibility of terbutaline and cycloazinone, high suspension rate, good stability, and ease of use.

[0006] On the other hand, there are two main methods for spraying forest herbicides: targeted spraying under the trees and aerial spraying. The former has the advantage of better protecting non-target trees, such as various economic forest trees, while the latter, although more efficient and more uniform, is precisely the one that makes it difficult to effectively protect various economic forest trees. Generally, if a large amount of forest herbicide residue remains on the leaves of economic forest trees, it will also cause large areas of them to wither and die, ultimately leading to significant economic losses.

[0007] Chinese invention patent with publication number CN104082308A and publication date of October 8, 2014 discloses a herbicidal composition containing terbutaline and cycloazinone and its application. The composition uses terbutaline and cycloazinone in a mass ratio of 1-90:1-90 as active ingredients.

[0008] The herbicidal composition in this invention patent has the following advantages: it has a significant synergistic effect, is suitable for controlling a variety of weeds in corn fields, can significantly reduce the amount of pesticide used, expand the control range, save economic costs, and at the same time reduce the amount of pesticide residues in agricultural products and the environment, and delay the development of herbicide resistance in weeds.

[0009] However, the most obvious shortcoming of this weed-killing composition in actual use, which is also the technical problem that this invention aims to solve, is:

[0010] This herbicide composition is not suitable for use by high-altitude aerial spraying, in which the herbicide will remain in large quantities on the leaves of economic forest trees, causing a large number of economic forest trees to die.

[0011] Therefore, in summary, there is an urgent need for a modified terbutaline-cycloazinone herbicide that can minimize herbicide residue on the leaves of economic forest trees when sprayed from high altitudes by aircraft, for use in forest weeding operations. Summary of the Invention

[0012] This invention provides an improved terbutaline-cycloazinone water-dispersible granule forest herbicide, comprising resin-coated terbutaline, resin-coated cycloazinone, and a dispersant. Its specific application method is high-altitude spraying. Its advantages include: 1. Terbutaline and cycloazinone are coated with resin, ensuring that they are difficult for the leaves of economic forest trees to absorb upon contact. However, after dripping onto weeds, shrubs, and soil, they are effectively released and ultimately absorbed by the weeds and shrubs, ensuring a slow-release and effective weeding function; 2. The dispersant further improves the fluidity of the forest herbicide suspension, i.e., reduces its viscosity, ultimately greatly reducing the residual time and amount of the herbicide on the leaves of economic forest trees, further protecting the economic forest trees that come into contact with the herbicide first.

[0013] The technical solution adopted by the present invention to solve the above problems is: a modified terbutaline-cycloazinone water-dispersible granule type forest herbicide, wherein the forest herbicide is used by high-altitude spraying, and the raw material composition of the forest herbicide includes resin-coated terbutaline and resin-coated cycloazinone for protecting high-altitude economic trees, and a dispersant for increasing the flowability of the forest herbicide on the leaves of economic trees.

[0014] The existing terbutaline-cycloazin herbicide is designed to be easily absorbed by the leaves of relatively high-altitude economic trees, which is why it can only be applied using relatively inefficient methods such as manual spraying or ground-mounted spraying.

[0015] Therefore, the core principle of this forest herbicide is to prevent the leaves of economic forest trees that come into contact with the herbicide first from contacting and absorbing terbutaline and cycloazinone, ensuring that as much terbutaline and cycloazinone as possible are absorbed by weeds and shrubs at relatively low locations, ultimately achieving a highly efficient control effect on the target organisms.

[0016] One way to achieve the aforementioned effect of preventing contact and absorption is to coat the surface of terbutaline and cycloazinone with a resin that is soluble in water but dissolves relatively slowly. This ensures that when the forest herbicide suspension is temporarily stored on the leaves of economic forest trees for a relatively short time and in a relatively small amount, the leaves of economic forest trees can hardly absorb terbutaline and cycloazinone.

[0017] After resin-coated terbutaline and resin-coated cycloazinone have been on the weeds and in the soil for a long time, they can be released, ensuring effective weed control.

[0018] The second way to achieve the aforementioned non-contact and non-absorption effect is to increase the dripping speed of the forest herbicide suspension on the leaves. Essentially, this reduces its viscosity, allowing the suspension to leave the leaves of economic forest trees more quickly and thoroughly, ultimately further optimizing the protective effect on economic forest trees.

[0019] Therefore, the key in this process is to reasonably set the water solubility rate and degree of the resin coating layer, so that it neither releases terbutaline and cycloazinone, nor remains undissolved in the soil.

[0020] On the other hand, the resin material of the coating layer itself cannot cause significant environmental pollution and cannot harm the normal growth of economic forest trees.

[0021] A further preferred technical solution is that the resin used for the resin-coated tertidine and the resin-coated cycloazinone is a mixture of acrylic resin and polyethylene resin.

[0022] In this invention, acrylic resin is readily soluble in water, while polyethylene resin is relatively insoluble in water. Therefore, the two together can reasonably control the release time and degree of terbutaline and cycloazinone, ensuring that the vast majority of them act on various weeds.

[0023] On the other hand, the acrylic resin and polyethylene resin also have good spray coating performance, ensuring that the thickness of the resin coating film is appropriate and the bonding strength with tert-butylamine and cycloazinone is appropriate, so that tert-butylamine and cycloazinone can be released and take effect as needed.

[0024] A further preferred technical solution is that the weight ratio of the acrylic resin and the polyethylene resin is (1.5-1.8):1.

[0025] In this invention, if the amount of acrylic resin added is less than 1.5:1, the resin-coated tertidine and resin-coated cycloazinone are likely to remain in the soil for too long, resulting in missed weeding time.

[0026] However, if the addition ratio of the acrylic resin is greater than 1.8:1, the resin-coated tert-butylamine and resin-coated cycloazinone are likely to be released at least 10% onto the leaves of economic forest trees, ultimately causing many leaves to wither and die, which is unacceptable. Therefore, the aforementioned range of 1.5-1.8 for the addition ratio of acrylic resin was ultimately determined.

[0027] A further preferred technical solution involves the co-preparation of the resin-coated tertidine and the resin-coated cycloazinone, the preparation method comprising the following steps in sequence:

[0028] S1. Material addition: Add tertidine and cycloazinone to the reaction chamber of the bottom-spray fluidized bed, and add acrylic resin and polyethylene resin to the spray tank of the bottom-spray fluidized bed.

[0029] S2. Material heating: The tert-butylamine and cycloazinone are heated to 80-85°C and maintained, and the acrylic resin and polyethylene resin are heated to 108-115°C and maintained to obtain liquid resin.

[0030] S3. Spray coating: Using the nozzle of the bottom spray fluidized bed, the liquid resin is sprayed onto the surface of tert-butylamine and cycloazinone, while hot air at 70-80°C is introduced into the reaction chamber to obtain semi-wet material of tert-butylamine and cycloazinone.

[0031] S4. Hot air drying: The semi-wet material is subjected to hot air drying and then cooled to room temperature to finally obtain the resin-coated tertidine and resin-coated cycloazinone.

[0032] In this invention, the terbutaline and cycloazinone enter the reaction chamber through the bottom jet pipe of the fluidized bed, and the hot air in S3 is the hot air injected into the chamber through the bottom jet pipe.

[0033] In S3, the nozzle is located in the upper part of the bottom-spray fluidized bed, and it sprays laterally to ensure that tertrazine and cycloazinone are fully coated by the liquid resin.

[0034] Throughout the coating process, the terbutaline and cycloazinone remain stable, neither melting nor crumbling, thus ensuring that the resin-coated terbutaline and cycloazinone can still produce forest herbicide suspensions with high suspension rates and good stability in water.

[0035] A further preferred technical solution is that, in S3, the weight of the liquid resin is 11-15% of the total weight of tert-butylamine and cycloazinone, the spraying operation time is 5-25 min / 100kg of semi-wet material, and hot air is continuously introduced during the process.

[0036] A further preferred technical solution is that, in S4, the hot air temperature of the hot air drying operation is 65-70℃, and the hot air drying time is 40-80 min / 100kg semi-wet material.

[0037] A further preferred technical solution is that the dispersant is an acrylamide dispersant.

[0038] In this invention, the acrylamide dispersant can effectively reduce the viscosity of the forest herbicide suspension, allowing the suspension to drip off the leaves of economic forest trees as quickly as possible.

[0039] A further preferred technical solution is that the raw material composition of the forest herbicide also includes sodium dodecyl sulfate as a wetting agent.

[0040] In this invention, the sodium dodecyl sulfate wetting agent has the same function as the acrylamide dispersant, which is to shorten the residence time of the herbicide on the leaves of economic forest trees. However, the two have different principles. The latter wets the resin-coated tertidine and resin-coated cycloazinone, making them more fluid in the suspension and easier to drip down with the solvent in the suspension.

[0041] A further preferred technical solution is that the raw material composition of the forest herbicide includes the following components by weight:

[0042] Acrylic resin and polyethylene resin coated tert-butylene 40-70 parts

[0043] 10-32 parts of acrylic resin and polyethylene resin coated cycloazinone

[0044] Acrylamide dispersant 1-5 parts

[0045] Sodium dodecyl sulfate wetting agent 1-2 parts.

[0046] A further preferred technical solution is that the high-altitude spraying method includes three steps in sequence: first water spraying, forest herbicide suspension spraying, and second water spraying, with the water consumption ratio of each step being (1-2):1:(5-6).

[0047] In this invention, one of the functions of the first water spray is to moisten the leaves of the economic forest trees, so that when the herbicide suspension drips onto them, the herbicide suspension can immediately drip downwards, greatly shortening the residence time.

[0048] One of the functions of the second water spray is to thoroughly wash away the last trace of herbicide residue on the leaves of economic forest trees. Another function is to provide the soil with timely and sufficient clean water to fully dissolve acrylic resin and polyethylene resin, and to fully release tertidine and cycloazinone, ensuring that weeds and tangled shrubs in low-lying areas can be effectively controlled.

[0049] Finally, when spraying the forest herbicide, the weight ratio between it and water is 10-15g of herbicide to 4-6kg of water, ultimately obtaining a forest herbicide suspension with a suitable concentration. Detailed Implementation

[0050] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0051] Example 1

[0052] A modified terbutaline-cycloazinone water-dispersible granule forest herbicide, comprising the following components by weight:

[0053] 40 parts of acrylic resin and polyethylene resin coated tert-butylene

[0054] 10 parts of acrylic resin and polyethylene resin coated cycloazinone

[0055] 3 parts acrylamide dispersant

[0056] Two parts of sodium dodecyl sulfate wetting agent.

[0057] The resin coating ratios for both tertidine and cycloazinone are: 1.5 parts acrylic resin and 1 part polyethylene resin.

[0058] The resin-coated tertidine and resin-coated cycloazinone are prepared together, and the preparation method includes the following steps in sequence.

[0059] S1. Material addition: Add tertidine and cycloazinone to the reaction chamber of the bottom-spray fluidized bed, and add acrylic resin and polyethylene resin to the spray tank of the bottom-spray fluidized bed.

[0060] S2. Material heating: The tert-butylamine and cycloazinone are heated to 80°C and maintained, and the acrylic resin and polyethylene resin are heated to 110°C and maintained to obtain liquid resin.

[0061] S3, Spray coating: Using a bottom spray fluidized bed nozzle, the liquid resin is sprayed onto the surface of tert-butylamine and cycloazinone, while hot air at 75°C is introduced into the reaction chamber to obtain a semi-wet material of tert-butylamine and cycloazinone.

[0062] S4. Hot air drying: The semi-wet material is subjected to hot air drying and then cooled to room temperature to finally obtain the resin-coated tertidine and resin-coated cycloazinone.

[0063] In S3 above, the weight of the liquid resin is 11% of the total weight of terbutaline and cycloazinone, the spraying time is 15 min / 100kg semi-wet material, and hot air is continuously introduced during the process.

[0064] In S4 above, the hot air temperature for hot air drying is 65℃, and the hot air drying time is 45 min / 100kg semi-wet material.

[0065] Finally, the forest herbicide is applied via aerial spraying, whereby a suspension of the herbicide is sprayed downwards onto the economic forest requiring weed control using a drone or agricultural aircraft. The aerial spraying method comprises three steps: a first water spray, a spraying of the forest herbicide suspension, and a second water spray. The water usage ratio for each step is 2:1:5.

[0066] Example 2

[0067] A modified terbutaline-cycloazinone water-dispersible granule forest herbicide, comprising the following components by weight:

[0068] 55 parts of acrylic resin and polyethylene resin coated tert-butylamine

[0069] 13 parts of acrylic resin and polyethylene resin coated cycloazinone

[0070] 1 part acrylamide dispersant

[0071] Two parts of sodium dodecyl sulfate wetting agent.

[0072] The resin coating ratios for both tertidine and cycloazinone are: 1.6 parts acrylic resin and 1 part polyethylene resin.

[0073] The resin-coated tertidine and resin-coated cycloazinone are prepared together, and the preparation method includes the following steps in sequence.

[0074] S1. Material addition: Add tertidine and cycloazinone to the reaction chamber of the bottom-spray fluidized bed, and add acrylic resin and polyethylene resin to the spray tank of the bottom-spray fluidized bed.

[0075] S2. Material heating: The tert-butylamine and cycloazinone are heated to 82°C and maintained, and the acrylic resin and polyethylene resin are heated to 112°C and maintained to obtain liquid resin.

[0076] S3. Spray coating: Using the nozzle of the bottom spray fluidized bed, the liquid resin is sprayed onto the surface of tert-butylamine and cycloazinone, while hot air at 80°C is introduced into the reaction chamber to obtain semi-wet material of tert-butylamine and cycloazinone.

[0077] S4. Hot air drying: The semi-wet material is subjected to hot air drying and then cooled to room temperature to finally obtain the resin-coated tertidine and resin-coated cycloazinone.

[0078] In S3 above, the weight of the liquid resin is 13% of the total weight of tertrazine and cycloazinone, the spraying time is 20 min / 100 kg of semi-wet material, and hot air is continuously introduced during the process.

[0079] In S4 above, the hot air temperature for hot air drying is 70℃, and the hot air drying time is 65 min / 100kg semi-wet material.

[0080] Finally, the forest herbicide is applied via aerial spraying, whereby the suspension of the herbicide is sprayed downwards onto the economic forest requiring weed control using drones or agricultural aircraft. The aerial spraying method comprises three steps: a first water spray, a spraying of the forest herbicide suspension, and a second water spray. The water usage ratio for each step is 2:1:6.

[0081] Example 3

[0082] A modified terbutaline-cycloazinone water-dispersible granule forest herbicide, comprising the following components by weight:

[0083] 70 parts of acrylic resin and polyethylene resin coated tert-butylene

[0084] 30 parts of acrylic resin and polyethylene resin coated cycloazinone

[0085] Acrylamide dispersant 5 parts

[0086] Two parts of sodium dodecyl sulfate wetting agent.

[0087] The resin coating ratios for tertidine and cycloazinone are both: 1.8 parts acrylic resin and 1 part polyethylene resin.

[0088] The resin-coated tertidine and resin-coated cycloazinone are prepared together, and the preparation method includes the following steps in sequence.

[0089] S1. Material addition: Add tertidine and cycloazinone to the reaction chamber of the bottom-spray fluidized bed, and add acrylic resin and polyethylene resin to the spray tank of the bottom-spray fluidized bed.

[0090] S2. Material heating: The tert-butylamine and cycloazinone are heated to 85°C and maintained, and the acrylic resin and polyethylene resin are heated to 112°C and maintained to obtain liquid resin;

[0091] S3, Spray coating: Using the nozzle of the bottom spray fluidized bed, the liquid resin is sprayed onto the surface of tert-butylamine and cycloazinone, while hot air at 78°C is introduced into the reaction chamber to obtain a semi-wet material of tert-butylamine and cycloazinone.

[0092] S4. Hot air drying: The semi-wet material is subjected to hot air drying and then cooled to room temperature to finally obtain the resin-coated tertidine and resin-coated cycloazinone.

[0093] In S3 above, the weight of the liquid resin is 13% of the total weight of tertrazine and cycloazinone, the spraying time is 25 min / 100 kg of semi-wet material, and hot air is continuously introduced during the process.

[0094] In S4 above, the hot air temperature for hot air drying is 68℃, and the hot air drying time is 680min / 100kg semi-wet material.

[0095] Finally, the forest herbicide is applied via aerial spraying, whereby a suspension of the herbicide is sprayed downwards onto the economic forest requiring weed control using a drone or agricultural aircraft. The aerial spraying method comprises three steps: a first water spray, a spraying of the forest herbicide suspension, and a second water spray. The water usage ratio for each step is 1:1:6.

[0096] Comparative Example 1

[0097] The forest herbicide in this comparative example differs from the forest herbicide in Example 1 only in the following aspect:

[0098] Replace the acrylic resin-coated terbutaline and the acrylic resin-coated cycloazinone with uncoated terbutaline and uncoated cycloazinone.

[0099] Correspondingly, the resin coating process is also omitted, and it is ultimately used in the same high-altitude spraying method.

[0100] Comparative Example 2

[0101] The forest herbicide in this comparative example differs from the forest herbicide in Example 1 only in the following aspect:

[0102] Its raw material composition does not include acrylamide dispersant.

[0103] Ultimately, it was used in the same high-altitude spraying method.

[0104] Comparative Example 3

[0105] The forest herbicide in this comparative example differs from the forest herbicide in Example 1 only in the following aspect:

[0106] Its raw material composition does not include sodium dodecyl sulfate as a wetting agent.

[0107] Ultimately, it was used in the same high-altitude spraying method.

[0108] Comparative Example 4

[0109] The forest herbicide in this comparative example differs from the forest herbicide in Example 1 only in the following aspect:

[0110] The same forest herbicide suspension was applied using manual spraying on the ground.

[0111] Control experiment

[0112] In seven mixed forests of dawn redwood and poplar, each approximately 10 acres in size, the seven herbicides mentioned above were applied. Two days later, observations were made on the weeds and the dawn redwood and poplar trees, and the results are as follows.

[0113] Table of control experiment data

[0114]

[0115] Experimental Analysis

[0116] First, the weeds in the seven mixed forests of metasequoia and poplar were effectively controlled, and the weeds showed obvious signs of dying, indicating that the herbicide combination of terbutaline and cycloazinone has an ideal function in controlling forest weeds.

[0117] In the second and third examples, the metasequoia and poplar mixed forests did not have a large number of dead spots on the leaves of the metasequoia and poplar trees. However, in the metasequoia and poplar mixed forest of Comparative Example 1, the poplar leaves had a large number of dead spots, and the metasequoia leaves also had a lot of dead spots. This shows that the delayed action and rapid drip setting of the forest herbicide is indeed effective. In addition, the size of the metasequoia leaves is much smaller than that of the poplar leaves, so the former is less damaged.

[0118] Third, in the mixed forests of dawn redwood and poplar corresponding to Comparative Examples 2 and 3, the number of dead spots on the leaves of each dawn redwood and poplar also existed, but the difference from the three examples was not significant. This indicates that the resin coating method of tertidine and cycloazinone plays a dominant role in the protective effect of dawn redwood and poplar, while the additional addition of acrylamide dispersant and sodium dodecyl sulfate wetting agent does indeed play a certain beneficial role.

[0119] Fourth, in the mixed forest of dawn redwood and poplar corresponding to Comparative Example 4, although the dawn redwood and poplar had the best protective effect, the herbicide spraying time required for the six forests in the former only required 15-20 minutes, while the time required for the corresponding seventh forest was more than 4 hours. Therefore, it shows that the high-altitude spraying method has an absolute efficiency advantage.

[0120] The embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of the present invention. These are all non-inventive modifications, and are protected by patent law as long as they fall within the scope of the claims of the present invention.

Claims

1. A modified terbutaline-cycloazinone water-dispersible granule formulation of a forest herbicide, characterized in that: The forest herbicide is applied by aerial spraying. Its raw material composition includes resin-coated terbutaline and resin-coated cycloazinone for protecting high-altitude economic trees, and a dispersant to increase the flowability of the herbicide on the leaves of economic trees. The resins used for the resin-coated tertidine and resin-coated cycloazinone are a mixture of acrylic resin and polyethylene resin. The weight ratio of the acrylic resin to the polyethylene resin is (1.5-1.8):

1. The resin-coated tertidine and resin-coated cycloazinone are prepared together, and the preparation method includes the following steps in sequence. S1. Material addition: Add tertidine and cycloazinone to the reaction chamber of the bottom-spray fluidized bed, and add acrylic resin and polyethylene resin to the spray tank of the bottom-spray fluidized bed. S2. Material heating: The tert-butylamine and cycloazinone are heated to 80-85°C and maintained, and the acrylic resin and polyethylene resin are heated to 108-115°C and maintained to obtain liquid resin. S3. Spray coating: Using the nozzle of the bottom spray fluidized bed, the liquid resin is sprayed onto the surface of tert-butylamine and cycloazinone, while hot air at 70-80°C is introduced into the reaction chamber to obtain semi-wet material of tert-butylamine and cycloazinone. S4. Hot air drying: The semi-wet material is subjected to hot air drying and then cooled to room temperature to finally obtain the resin-coated tertidine and resin-coated cycloazinone.

2. The improved terbutaline-cycloazinone water-dispersible granule forest herbicide according to claim 1, characterized in that: In S3, the weight of the liquid resin is 11-15% of the total weight of tert-butylamine and cycloazinone, and the spraying operation time is 5-25 min / 100kg of semi-wet material, during which hot air is continuously introduced.

3. A modified terbutaline-cycloazinone water-dispersible granule form of forest herbicide according to claim 1, characterized in that: In S4, the hot air temperature for hot air drying is 65-70℃, and the hot air drying time is 40-80 min / 100kg semi-wet material.

4. The improved terbutaline-cycloazinone water-dispersible granule form of forest herbicide according to claim 1, characterized in that: The dispersant is an acrylamide dispersant.

5. A modified terbutaline-cycloazinone water-dispersible granule form of forest herbicide according to claim 4, characterized in that: The raw material composition of the forest herbicide also includes sodium dodecyl sulfate as a wetting agent.

6. A modified terbutaline-cycloazinone water-dispersible granule form of forest herbicide according to claim 5, characterized in that... The raw material composition of the forest herbicide includes the following components by weight: Acrylic resin and polyethylene resin coated tert-butylene 40-70 parts 10-32 parts of acrylic resin and polyethylene resin coated cycloazinone Acrylamide dispersant 1-5 parts Sodium dodecyl sulfate wetting agent 1-2 parts.

7. A modified terbutaline-cycloazinone water-dispersible granule form of forest herbicide according to claim 1, characterized in that: The high-altitude spraying method includes three steps: a first water spray, a forest herbicide suspension spray, and a second water spray. The water consumption ratio for each step is (1-2):1:(5-6).

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