Garden tree seed transplanting defoliant as well as preparation method and application thereof

Abstract

The invention relates to the technical field of defoliating agents, and particularly discloses a garden tree seed transplanting defoliating agent and a preparation method and application thereof. The garden tree seed transplanting defoliant provided by the invention comprises a component A and a component B, the component A comprises 7.5-16 g / L of ethephon and 0.6-1.8 g / L of an auxiliary agent A; the solvent is water; the additive A is prepared by mixing organic silicon, green tangerine oil and mineral oil according to the weight ratio of (8-12): (3-7): (0.1-2); the component B is prepared from 7.5 g / L to 16 g / L of thidiazuron, 0.6 g / L to 1.5 g / L of tribenuron-methyl, 1.2 g / L to 2 g / L of diuron and 2 g / L to 3.2 g / L of an auxiliary agent B; the solvent is water; and the auxiliary agent B is prepared by mixing organic silicon, green tangerine oil and mineral oil in a weight ratio of (3-7): (8-12): (0.1-2). The defoliant provided by the invention can perform directional area defoliation on garden tree species, and is low in comprehensive cost, simple in use method and efficient in defoliation effect.

Description

Technical Field

[0001] The present application relates to the technical field of defoliants, and in particular to a defoliant for transplanting garden tree species, and a preparation method and application thereof. Background Art

[0002] How to promote efficient tree survival during off-season transplantation is a difficult point in landscaping projects. Usually, a variety of technical means are needed to balance the tree vigor and improve the survival rate, such as pruning and manual leaf removal. Traditional leaf removal requires a large amount of manpower in a short period of time to remove the leaves one by one, which is inefficient and costly. The high cost and time-consuming and labor-intensive nature of the process limits the implementation of the project. Currently, chemical defoliants are only used during the leaf-falling harvest period of agricultural crops (such as cotton) and have not been used during the growing season. At the same time, woody plants are large and strong in growth, have strong resistance, thick leaf cuticles, and poor penetration of chemicals. Currently, defoliation products on the market have no effect on tree defoliation, and the simple use of growth regulators has little effect on trees in their vigorous growth period.

[0003] In recent years, the research on the combination of growth regulators and herbicides, and growth regulators and defoliants has become a hot topic. In cotton applications, the defoliation time of defoliants generally lasts 10 to 25 days; however, there is currently a blank in the research on defoliation of garden tree species, and there are no special formulas for specific tree species such as fraxinus, crabapple, and mountain peach. Summary of the Invention

[0004] In order to promote the efficient survival of trees, the present application provides a garden tree species transplant defoliant and its preparation method and application.

[0005] In a first aspect, the present application provides a garden tree species transplant defoliant, comprising component A and component B; The A component includes the following components at the following concentrations: 7.5-16 g / L of ethephon and 0.6-1.8 g / L of A additive; the solvent is water; the A additive is a mixture of silicone, green citrus oil, and mineral oil in a weight ratio of 8-12:3-7:0.1-2; The B component includes the following components at the following concentrations: 7.5-16 g / L of thidiazuron, 0.6-1.5 g / L of bensulfuron-methyl, 1.2-2 g / L of diuron, and 2-3.2 g / L of B additive; the solvent is water; the B additive is composed of a mixture of silicone, green citrus oil, and mineral oil in a weight ratio of 3-7:8-12:0.1-2; The garden tree species is selected from any one of Fraxinus chinensis, Crabapple, and Prunus multiflora.

[0006] Preferably, the A component includes the following components at the following concentrations: 10-14 g / L of ethephon and 1-1.4 g / L of A adjuvant.

[0007] In a specific embodiment, the A component includes components with the following concentrations: 12 g / L of ethephon and 1.2 g / L of A adjuvant.

[0008] Preferably, the auxiliary agent A is composed of a mixture of silicone Break-Thru S240, green citrus oil and mineral oil in a weight ratio of 9-11:4-6:0.6-1.5.

[0009] In a specific embodiment, the weight ratio of the organosilicon Break-Thru S240, green peel orange oil, and mineral oil can be 8:3:0.1, 10:3:0.1, 112:3:0.1, 8:4:0.1, 9:4:0.1, 10:4:0.1, 11:4:0.1, 12:4:0.1, 9:5:0.1, 10:5:0.1, 11:5:0.1, 12:5:0.1, 8:6:0.1, 9:6:0.1, 10:6:0.1, 11:6:0.1, 8:7:0. .1, 9:7:0.1, 10:7:0.1, 11:7:0.1, 12:7:0.1, 8:3:0.6, 9:3:0.6, 10:3:0.6, 11:3:0.6, 12:3:0.6, 8:4:0.1, 9:4:1, 10:4:1, 11:4:1, 12:4:1, 9:5:1.5, 10:5:1.5, 11:5:1.5, 12:5:1.5, 8:6:0.1, 9:6:2.

[0010] Through experimental analysis, it can be known that the application of the raw material components in the above weight ratio as auxiliary agent A can further improve the application effect of the defoliant.

[0011] Preferably, the component A further comprises ethanol, and the weight ratio of ethanol to ethephon is 80-120:1.

[0012] Preferably, the B component includes the following components at the following concentrations: 10-14 g / L of thidiazuron-methyl, 0.8-1.2 g / L of bensulfuron-methyl, 1.4-1.8 g / L of diuron, and 2.2-3.0 g / L of B adjuvant.

[0013] Preferably, the auxiliary agent B is composed of a mixture of organic silicon Silwet L-77, green citrus oil and mineral oil in a weight ratio of 4-6:9-11:0.6-1.5.

[0014] In a specific embodiment, the weight ratio of the silicone Silwet L-77, green citrus oil, and mineral oil can be 3:12:0.1, 7:8:2, 4:9:0.6, 5:9:0.6, 6:9:0.6, 4:10:0.6, 5:10:0.6, 6:10:0.6, 4:11:0.6, 5:11:0.6, 6:11:0.6, 4:9:1, 5:9:1, 6:9:1, 4:10:1.5, 5:10:1.5, and 6:10:1.5.

[0015] Through experimental analysis, it can be known that the application of the raw material components in the above weight ratio as B auxiliary agent can further improve the application effect of the defoliant.

[0016] In a second aspect, the present application provides a method for preparing the above-mentioned garden tree species transplant defoliant, which specifically comprises the following steps in sequence: Dilute ethephon to 80-120 times by weight of ethanol, then add it to water with silicone A, green peel orange oil and mineral oil. Prepare component A with corresponding concentration; Thidiazuron, bensulfuron-methyl, diuron, silicone A, citrus aurantium oil and mineral oil were added to water to prepare component B of corresponding concentration.

[0017] In a third aspect, the present application provides the use of the above-mentioned garden tree species transplant defoliant in regulating the growth of garden tree species.

[0018] In a fourth aspect, the present application provides a method for using the above-mentioned garden tree species transplant defoliant, which specifically comprises the following steps in sequence: Spray component A on 2 / 3 to 4 / 5 of the crown of garden tree species until water drips onto the leaves; After 2-4 hours, spray component B on 2 / 3 to 4 / 5 of the crown of the garden tree species until water drips from the leaves.

[0019] Fraxinus chinensis, crabapple, and mountain peach are all broad-leaved tree species with thick leaf cuticles. The defoliant provided in this application is suitable for defoliating garden trees of these species. During use, the ethephon in component A first induces activation of abscission layer cells, and then the thidiazuron in component B accelerates abscission layer decomposition; bensulfuron-methyl inhibits acetolactate synthase, blocking amino acid synthesis and promoting leaf chlorosis, hindering cell division and inhibiting bud growth; diuron destroys chloroplasts and gradually inhibits photosynthesis in leaves at the site of drug application; and the adjuvant ensures that the drug penetrates the wax layer, increases drug adhesion, and promotes drug absorption by the tree.

[0020] Preferably, the method for using the garden tree species transplant defoliant further includes the following steps: completing root cutting treatment 24-36 hours before applying component A; the root cutting treatment method is: cutting off the roots around 8-10 times the root ball, without cutting off the roots at the bottom of the root ball, and carrying out normal soil covering, support and watering maintenance after root cutting.

[0021] In summary, the technical solution of this application has the following effects: The garden tree species transplant defoliant provided by the present application can be used for chemical defoliation treatment in the nursery, and the tree species can be transplanted after the leaves are removed from the targeted area, which greatly reduces the pressure of emergency treatment during on-site construction.

[0022] The garden tree species transplant defoliant provided in this application is used as a chemical agent for treatment. A single spray of the agent can solve labor-intensive and heavy work. It has low overall cost, simple use method and efficient defoliation effect.

[0023] The garden tree species transplanting defoliant provided in the present application causes little physical damage to the tree crown by chemically removing leaves, and can fully preserve the tree crown structure and the ornamental value of the tree body.

[0024] The garden tree species transplant defoliant provided in the present application can remove leaves in advance, which is beneficial for off-season planting and seedling acclimatization, thereby improving the transplant survival rate. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with examples, comparative examples and performance testing experiments. These examples should not be construed as limiting the scope of protection claimed in this application.

[0026] The ethephon (CAS: 16672-87-0; model Y0201-100G) used in this application was purchased from Hefei BASF Biotechnology Co., Ltd.; thiadiazole (active ingredient content 50%; product standard number HG / T 5238-2017) was purchased from Jiangsu Ruibang Agrochemical Co., Ltd.; bensulfuron-methyl (active ingredient content 10%; product standard number GB / T 20680-2006) was purchased from Qiaochang Modern Agriculture Co., Ltd.; diuron (active ingredient content 80%; product standard number HG / T 5123-2016) was purchased from Fanbang Modern Agriculture Co., Ltd.; diquat (active ingredient content 200 g / L; product standard number HG / T 5246-2017) was purchased from Shandong Shengpeng Technology Co., Ltd.; green peel orange oil (Keosun) was purchased from Shantou Feixiang Agricultural Materials Co., Ltd.; mineral oil was purchased from Guoguang Lepu. Example

[0027] Examples 1-7 Examples 1-7 respectively provide a garden tree species transplant defoliant and a preparation method thereof.

[0028] The difference between the above embodiments is that the composition concentration of each component in the garden tree species transplanting defoliant is different, as shown in Table 1.

[0029] The specific method for preparing the garden tree species transplanting defoliant in the above embodiment is as follows.

[0030] Ethephon was diluted in ethanol and then added to water with additive A (composed of a mixture of silicone Break-Thru S240, green citrus oil, and mineral oil in a weight ratio of 10:5:1) to prepare component A of the corresponding concentration (measured with water as the solvent); Thidiazuron, bensulfuron-methyl, diuron and B adjuvant (composed of a mixture of organic silicon Silwet L-77, green citrus oil and mineral oil in a weight ratio of 5:10:1) were added to water to prepare component B of corresponding concentration.

[0031] Table 1 Composition of the garden tree species transplanting defoliant in Examples 1-7 and Comparative Examples 1-2 Examples 8-11 Examples 8-11 respectively provide a garden tree species transplant defoliant and a preparation method thereof.

[0032] The difference between the above embodiment and embodiment 2 is that the auxiliary agent composition of each component is different, as shown below.

[0033] In Example 8, in auxiliary agent A, an equal amount of Silwet L-77 was used instead of Break-Thru S240 as the silicone.

[0034] In Example 9, auxiliary agent A is composed of a mixture of silicone Break-Thru S240, green citrus oil, and mineral oil in a weight ratio of 12:3:0.1.

[0035] In Example 10: In the auxiliary agent B, an equal amount of Break-Thru S240 was used instead of Silwet L-77 as the silicone.

[0036] In Example 11, the auxiliary agent B is composed of a mixture of organic silicon Silwet L-77, green citrus oil, and mineral oil in a weight ratio of 7:8:2.

[0037] The other process parameters in the above embodiment are the same as those in Example 2.

[0038] Comparative Example Comparative Example 1-2 Comparative Examples 1-2 respectively provide a garden tree species transplant defoliant and a preparation method thereof.

[0039] The difference between the comparative example and Example 2 is that the composition concentration of each component in the garden tree species transplanting defoliant is different, as shown in Table 1.

[0040] The other process parameters in the above comparative example are the same as those in Example 2.

[0041] Comparative Example 3 Comparative Example 3 provides a garden tree species transplant defoliant and a preparation method thereof.

[0042] The difference between the comparative example and Example 2 is that the preparation method of the garden tree species transplanting defoliant is different, as shown below.

[0043] Ethephon is diluted in ethanol, and then added into water together with thidiazuron, bensulfuron-methyl, diuron, adjuvant A and adjuvant B to prepare a solution of corresponding concentration, which is a defoliant for transplanting garden tree species.

[0044] The other process parameters in the above comparative example are the same as those in Example 2.

[0045] Comparative Examples 4-7 Comparative Examples 4-7 respectively provide a garden tree species transplant defoliant and a preparation method thereof.

[0046] The differences between the above comparative example and Example 2 are specifically as follows.

[0047] In Comparative Example 4: Auxiliary agent A is composed of a mixture of silicone Break-Thru S240, green citrus oil, and mineral oil in a weight ratio of 5:10:1.

[0048] In Comparative Example 5, the auxiliary agent B is composed of a mixture of organic silicon Silwet L-77, green citrus oil, and mineral oil in a weight ratio of 10:5:1.

[0049] In Comparative Example 6: In component B, an equal amount of fomesafen was used to replace bensulfuron-methyl.

[0050] In Comparative Example 7: In component B, diuron was replaced with an equal amount of diquat.

[0051] The other process parameters in the above comparative example are the same as those in Example 2.

[0052] Performance testing (1) Effects of defoliants on the rapid growth period of garden tree species in summer Experimental garden tree species: Fraxinus chinensis; Experimental time: May 20, 2024.

[0053] Test method: Complete the root cutting treatment 24 hours before applying component A; the root cutting treatment method is: cut off the roots around the 9-fold root ball, do not cut off the roots at the bottom of the root ball, and after cutting the roots, cover the soil, support and water the plants normally.

[0054] Spray component A on 2 / 3 to 4 / 5 of the crown of garden tree species until water drips onto the leaves; After 3 hours, spray component B on 2 / 3 to 4 / 5 of the crown of the garden tree species until water drips from the leaves.

[0055] Then record the time when leaves begin to fall off, the time when the leaf shedding rate reaches 80%, the time when the leaf shedding rate reaches 90%, and the time when new buds germinate.

[0056] (2) Effects of defoliants on the stable growth period of garden tree species in autumn Experimental garden tree species: Fraxinus chinensis; Experimental time: August 20, 2024.

[0057] Test method: Complete root cutting 24 hours before applying component A. The root cutting method is to cut off the roots around the 9-fold root ball, without cutting off the roots at the bottom of the root ball. After cutting the roots, cover with soil, support and water the plants normally. Spray component A on 2 / 3 to 4 / 5 of the crown of garden tree species until water drips onto the leaves; After 3 hours, spray component B on 2 / 3 to 4 / 5 of the crown of the garden tree species until water drips from the leaves.

[0058] Then record the time when leaves begin to fall off, the time when the leaf shedding rate reaches 80%, the time when the leaf shedding rate reaches 90%, and the time when new buds germinate.

[0059] Test results: as shown in Table 2.

[0060] Table 2 Test results of the application effect of defoliants in Examples and Comparative Examples From the test results in the above table, it can be seen that the garden tree species transplanting defoliant prepared by using the technical solution provided by the present application has excellent defoliation performance for garden tree species.

[0061] Comparing the test results of Examples 1-7 and Comparative Examples 1-2 shows that the amount of each raw material component in Component A and Component B of the garden tree transplant defoliant has a significant impact on the defoliant's performance. The present application utilizes specific concentrations of raw materials as Component A and Component B, respectively, to produce a defoliant with excellent performance.

[0062] By comparing the test results of Example 2 and Comparative Example 3, it can be seen that in Comparative Example 3, ethephon is directly diluted into ethanol and then added to water with thidiazuron, bensulfuron-methyl, diuron, adjuvant A, and adjuvant B to prepare a defoliant for transplanting garden tree species, and the application effect is poor. In contrast, the present application uses ethephon and adjuvant A in a weight ratio of 7.5-16 g / L as component A, and uses thidiazuron-methyl, 0.6-1.5 g / L of bensulfuron-methyl, 1.2-2 g / L of diuron, and 2-3.2 g / L of adjuvant B as component B, and the defoliant prepared has excellent performance.

[0063] By comparing the test results of Example 2 and Comparative Examples 4-7, it can be seen that in Comparative Example 4, the defoliant solution prepared by using adjuvant A, which is composed of a mixture of silicone Break-Thru S240, green tangerine oil, and mineral oil in a weight ratio of 5:10:1, and adjuvant B, which is composed of a mixture of silicone Break-Thru S240, green tangerine oil, and mineral oil in a weight ratio of 10:5:1, in Comparative Example 6, replacing bensulfuron-methyl with an equal amount of fomesafen in component B, and replacing diuron with an equal amount of diquat in component B in Comparative Example 7, has poor application effect. In contrast, the application selects adjuvant A, which is composed of a mixture of silicone, green tangerine oil, and mineral oil in a weight ratio of 8-12:3-7:0.1-2, and adjuvant B, which is composed of a mixture of silicone, green tangerine oil, and mineral oil in a weight ratio of 3-7:8-12:0.1-2, which can effectively improve the application effect of the defoliant solution.

[0064] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the present invention. Therefore, such modifications and improvements, which do not depart from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A defoliant for transplanting garden tree species, characterized in that: It includes component A and component B; The A component includes the following components at the following concentrations: 7.5-16 g / L of ethephon and 0.6-1.8 g / L of A additive; the solvent is water; the A additive is a mixture of silicone, green citrus oil, and mineral oil in a weight ratio of 8-12:3-7:0.1-2; The B component includes the following components at the following concentrations: 7.5-16 g / L of thidiazuron, 0.6-1.5 g / L of bensulfuron-methyl, 1.2-2 g / L of diuron, and 2-3.2 g / L of B additive; the solvent is water; the B additive is composed of a mixture of silicone, green citrus oil, and mineral oil in a weight ratio of 3-7:8-12:0.1-2; The garden tree species is selected from any one of Fraxinus chinensis, Crabapple, and Prunus multiflora.

2. The garden tree species transplanting defoliant according to claim 1, characterized in that The A component includes the following components at the following concentrations: 10-14 g / L of ethephon and 1-1.4 g / L of A auxiliary agent.

3. The garden tree species transplanting defoliant according to claim 1, characterized in that The auxiliary agent A is composed of a mixture of organic silicon Break-Thru S240, green citrus oil and mineral oil in a weight ratio of 9-11:4-6:0.6-1.

5.

4. The garden tree species transplanting defoliant according to claim 1, characterized in that The component A also includes ethanol, and the weight ratio of ethanol to ethephon is 80-120:

1.

5. The garden tree species transplanting defoliant according to claim 1, characterized in that The B component includes the following components in the following concentrations: 10-14 g / L of thidiazuron-methyl, 0.8-1.2 g / L of bensulfuron-methyl, 1.4-1.8 g / L of diuron, and 2.2-3.0 g / L of B adjuvant.

6. The garden tree species transplanting defoliant according to claim 1, characterized in that: The auxiliary agent B is composed of a mixture of organic silicon Silwet L-77, green citrus oil and mineral oil in a weight ratio of 4-6:9-11:0.6-1.

5.

7. A method for preparing the garden tree species transplant defoliant according to any one of claims 1 to 6, characterized in that: Specifically, the following steps are performed in sequence: Dilute ethephon to 80-120 times by weight of ethanol, then add it to water with silicone A, green tangerine oil, and mineral oil to prepare component A of corresponding concentration; Thidiazuron, bensulfuron-methyl, diuron, silicone A, citrus aurantium oil and mineral oil were added to water to prepare component B of corresponding concentration.

8. Use of the garden tree species transplanting defoliant according to any one of claims 1 to 6 in regulating the growth of garden tree species.

9. A method for using the garden tree species transplanting defoliant according to any one of claims 1 to 6, characterized in that: Specifically, the following steps are performed in sequence: Spray component A on 2 / 3 to 4 / 5 of the crown of garden tree species until water drips onto the leaves; After 2-4 hours, spray component B on 2 / 3 to 4 / 5 of the crown of the garden tree species until water drips from the leaves.

10. The method for using the garden tree species transplanting defoliant according to claim 9, characterized in that: The following steps are also included: Complete the root cutting treatment 24-36 hours before applying component A; the root cutting treatment method is: cut off the roots around 8-10 times the root ball, do not cut off the roots at the bottom of the root ball, and after cutting the roots, cover the soil, support and water the plants normally.

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