Penetrating aid for carya illinoensis trees and application

Abstract

The invention discloses an apocarya tree permeation auxiliary agent and application, and belongs to the technical field of tree permeation auxiliary agents. The apocarya tree permeation auxiliary agent comprises fatty acid methyl ester ethoxylate, polyether modified trisiloxane and sodium dodecyl benzene sulfonate, and the mass ratio of the fatty acid methyl ester ethoxylate to the polyether modified trisiloxane to the sodium dodecyl benzene sulfonate is (1-2): (1-2): (1-2). The permeation auxiliary agent for the carya illinoensis trees has the beneficial effects that the permeation auxiliary agent can carry a medicament to quickly enter a trunk, trunk borers are effectively killed, and the plant surface wetting and spreading performance of the auxiliary agent can be remarkably enhanced; the auxiliary agent has the advantages of strong penetration performance on carya illinoensis trees, high fatality rate of trunk borers, low cost, simple and convenient dosage, small dosage, fast pesticide effect, small environmental influence and high safety.

Description

Technical Field

[0001] The invention belongs to the technical field of tree penetration aids, and in particular relates to a thin-shell pecan tree penetration aid and application thereof. Background Art

[0002] Thin-shelled pecan, also known as pecan, is an ecological and economic tree species that integrates high-quality dried fruit, woody oil, landscaping and high-grade wood. At present, 16 provinces (cities) in my country, including Anhui, Yunnan, Jiangsu and Zhejiang, have achieved large-scale cultivation and planting. The national planting area has exceeded 1.5 million mu, and the annual output exceeds 5,000 tons. With the continuous expansion of the planting scale, the damage caused by diseases and pests of thin-shelled pecans has become increasingly serious, causing a serious decline in the yield and quality of pecans. Among them, the most serious damage caused by thin-shelled pecan pests is the trunk-boring pests. The larvae live and eat in the branches and trunks, causing serious damage, which can cause symptoms such as withering and yellowing of the leaves of thin-shelled pecans. If it is serious, it will cause the death of the entire tree.

[0003] Trunk-boring pests live in seclusion. Except for the adult stage, they live in the exposed state. In other stages, they live in the phloem and xylem. It is difficult to detect when they first harm trees. Once obvious signs of damage appear, the best time for prevention and control has been lost. Trunk-boring pests mostly live inside forest tissues. They are less affected by the external environment, have few natural enemies, and have a relatively stable population density. At the same time, drugs cannot reach the insect body, making it difficult to control tree pests. When traditional pesticides are sprayed on tree trunks, the pesticides will not be able to reach the trunk tissue in time, resulting in low utilization, poor effect, and low efficiency.

[0004] As a new type of high molecular compound, tree penetration aid can force the bark pores to open, allowing the mixed pesticide to enter the sieve tube tissue, play a contact or stomach poisoning role during conduction, and thus achieve the purpose of killing stem borers. At the same time, tree penetration aid as an adjuvant can improve the efficacy of the pesticide, reduce the dosage, and improve the utilization rate of pesticides.

[0005] The Chinese patent application document with publication number CN118058279A discloses a tree penetration aid and its application. The tree penetration aid comprises fatty alcohol polyoxyethylene ether and perfluorooctyl polyether surfactants, the mass ratio of fatty alcohol polyoxyethylene ether and perfluorooctyl polyether surfactants is (3-4):1, and the weight average molecular weight of fatty alcohol polyoxyethylene ether is 300-500. The patent improves the wettability and permeability of the penetration aid by compounding a certain mass of fatty alcohol polyoxyethylene ether and perfluorooctyl polyether surfactants, has the characteristics of quickly opening the lenticels of the bark, carrying active ingredients into the sieve tube tissue and conducting up and down, can effectively improve the absorption rate of the tree to the drug, make the drug quickly enter the xylem of the tree, and conduct to other parts of the tree. However, the patent does not disclose the raw material composition and proportion of the thin-shell pecan tree penetration aid of the present invention. Summary of the invention

[0006] The technical problem to be solved by the present invention is how to provide a penetration aid for thin-shelled hickory trees to solve the problems of poor penetration ability of the agent, low utilization rate, poor effect and inability to effectively kill stem-boring pests during application.

[0007] The present invention solves the above technical problems through the following technical means:

[0008] The first aspect of the present invention provides a pecan wood penetration aid, comprising fatty acid methyl ester ethoxylate, polyether modified trisiloxane and sodium dodecylbenzene sulfonate, wherein the mass ratio of fatty acid methyl ester ethoxylate, polyether modified trisiloxane and sodium dodecylbenzene sulfonate is (1-2): (1-2): (1-2).

[0009] Preferably, the pecan wood penetration aid is composed of fatty acid methyl ester ethoxylate, polyether modified trisiloxane, sodium dodecylbenzene sulfonate and an organic solvent, and the mass fraction of the organic solvent is ≤70%.

[0010] Preferably, the organic solvent is selected from one or more of ethylene glycol, polyethylene glycol and propylene glycol.

[0011] Preferably, the mass ratio of the fatty acid methyl ester ethoxylate, the polyether-modified trisiloxane and sodium dodecylbenzene sulfonate is 1:2:1.

[0012] Preferably, the mass ratio of the fatty acid methyl ester ethoxylate, the polyether-modified trisiloxane and sodium dodecylbenzene sulfonate is 1:2:2.

[0013] Preferably, the pecan wood penetration aid is composed of 10-20% by mass of fatty acid methyl ester ethoxylate, 10-20% by mass of polyether modified trisiloxane, 10-20% by mass of sodium dodecylbenzene sulfonate and 40-70% by mass of ethylene glycol.

[0014] Preferably, the pecan wood penetration aid is composed of 10% by mass of fatty acid methyl ester ethoxylate, 20% of polyether modified trisiloxane, 10% of sodium dodecylbenzene sulfonate and 60% of ethylene glycol.

[0015] Preferably, the pecan wood penetration aid is composed of 20% by mass of fatty acid methyl ester ethoxylate, 20% of polyether modified trisiloxane, 20% of sodium dodecylbenzene sulfonate and 40% of ethylene glycol.

[0016] Preferably, the pecan wood penetration aid is composed of 20% by mass of fatty acid methyl ester ethoxylate, 10% of polyether modified trisiloxane, 20% of sodium dodecylbenzene sulfonate and 50% of ethylene glycol.

[0017] The second aspect of the present invention provides the use of the above-mentioned thin-shell pecan wood penetration aid, wherein the thin-shell pecan wood penetration aid is mixed with a wood medicine solution and then applied to a tree trunk.

[0018] The beneficial effects of the present invention are:

[0019] (1) The present invention provides a penetration aid for thin-shelled hickory trees, which can carry the agent quickly into the trunk and effectively kill trunk-boring pests. The penetration aid comprises three compounds, fatty acid methyl ester ethoxylate, polyether-modified trisiloxane and sodium dodecylbenzene sulfonate, which are compounded in a certain mass ratio. The plant surface wetting and spreading performance of the agent can be significantly enhanced; the thin-shelled hickory bark penetration ability of the agent is improved, so that the agent can quickly enter the tree body; the penetration ability of the agent in the xylem of the thin-shelled hickory trunk is enhanced, so that the agent can quickly diffuse in the tree body, and the insecticidal efficiency of the agent is improved.

[0020] (2) The adjuvant has strong penetration performance against thin-shelled hickory trees, high mortality rate of stem-boring pests, low cost, simple preparation, small amount of medicine, fast efficacy, small environmental impact and high safety, and is worthy of large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a comparison chart of the test results of the blade wetting experiment in Example 1 of the present invention.

[0022] Figure 2 This is a comparison chart of the test results of the thin-shell pecan bark penetration experiment in Example 1 of the present invention.

[0023] Figure 3 This is a comparison chart of the penetration test results of thin-shell hickory wood strips in Example 1 of the present invention.

[0024] Figure 4 This is a comparison chart of the penetration test results of the thin-shelled pecan wood strips with skin in Example 1 of the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Unless otherwise specified, the test materials and reagents used in the following examples can be obtained from commercial sources.

[0027] If no specific techniques or conditions are specified in the examples, they can be carried out according to the techniques or conditions described in the literature in the art or according to the product instructions.

[0028] The fatty acid methyl ester ethoxylate was purchased from Green Union (Jining) Chemical Technology Co., Ltd.; the polyether modified trisiloxane was purchased from Hubei Hengjingrui Chemical Co., Ltd.; the sodium dodecylbenzene sulfonate was purchased from Wuhan Jixin Yibang Biotechnology Co., Ltd.; the ethylene glycol was purchased from Shandong Xinxiangsheng Chemical Import and Export Co., Ltd.; and the imidacloprid was purchased from Shandong Bestway Crop Protection Co., Ltd.

[0029] Embodiment 1:

[0030] 1. Research on the raw material ratio of thin-shell pecan wood penetration aid

[0031] Table 1 Compound ratio (mass fraction) of the pecan wood penetration aid

[0032]

[0033] The composition of the thin-shelled hickory wood penetration aid of Example 1 is: 10% by mass of polyether-modified trisiloxane and 90% by mass of ethylene glycol; the rest are similar.

[0034] 2. Practical application research of thin-shell pecan wood penetration aid

[0035] From May to June 2022, during the peak period of damage by larval pecans, a practical application study of penetration aids was conducted at the Qinglongdian pecan base of Anhui Shuiqingmuhua Ecological Technology Co., Ltd. The pecan penetration aids with a ratio of 1 to 9 were diluted 50 times with water and mixed with a 200-fold dilution of 20% imidacloprid at a mass ratio of 1:1 (experimental group), and sprayed on the trunk area below 1 meter until water droplets hung on the bark.

[0036] From May to June 2024, during the peak period of larval damage in the walnuts, the penetration aid was applied at the walnut base of Anhui Changshan Agricultural Technology Co., Ltd. The application method was the same as above.

[0037] 3. Control group setting

[0038] Control group: The thin-shell pecan penetration aid was replaced with clean water, and the rest was the same as above.

[0039] IV. Experimental Results

[0040] 1. Leaf wetting test results

[0041] The leaf wetting test was conducted with water and Example 1 to 9. The leaves were hung and sprayed with 1 ml of the penetration aid. After 1 minute, the leaves were removed and the wetting condition of the leaves was checked. Figure 1 As shown, clean water has poor wettability on the leaves, while other penetration aids can completely wet the leaves.

[0042] 2. Results of thin-shell pecan bark penetration test

[0043] The thin-shell pecan bark penetration test was conducted on clean water and Example 1-9. The thin-shell pecan bark was placed flat with the outer layer facing upward and the inner layer close to the paper. 2 ml of penetration aid was added to the outer layer. After 30 minutes, the wetness of the paper was observed to determine the penetration effect of the aid. The results are as follows Figure 2 As shown, water can hardly penetrate the bark, while other penetration aids can penetrate the bark and soak the paper. Among them, Example 9 penetrates the bark in large quantities within 30 minutes, and the paper is completely soaked.

[0044] 3. Thin-shell hickory wood strip penetration test results

[0045] The thin-shell hickory wood strips were tested for penetration by using clean water and Example 1-9. One end of the thin-shell hickory wood strips was immersed in the penetration aid and a paper sheet was placed on the other end. After 4 hours, the wetness of the paper sheet was observed to determine the penetration effect of the aid. The results are shown in the figure. Figure 3 As shown, clean water, Example Ratios 1 and 2 were basically unable to penetrate and climb to the top of the wood strip within 4 hours, while other penetration aids were able to penetrate and climb to the top of the wood strip and soak the paper. Among them, Example Ratios 8 and 9 were able to penetrate and climb to the top of the wood strip in large quantities within 4 hours, and the penetration effect was good.

[0046] 4. Results of the penetration test of thin-shell pecan wood strips

[0047] The thin-shell pecan wood strips were tested for penetration by using clean water and Example 1-9. One end of the thin-shell pecan wood strips was immersed in the penetration aid. After 10 minutes, the climbing effect of the aid during penetration was observed to determine the climbing effect of the aid. The results are as follows: Figure 4 As shown, the penetration climbing effect of clean water and Example ratios 1 to 3 within 10 minutes is relatively poor, while the penetration climbing effect of Example ratios 8 and 9 is relatively good.

[0048] 5. Effect of penetrating aid on the control of stem borers in thin-shelled hickory trees

[0049] The control group and the experimental group (mixed with imidacloprid in a ratio of 1 to 9) were sprayed on thin-shelled pecans damaged by stem-boring pests to test the control effect of different adjuvants on stem-boring pests. The disease marks of thin-shelled pecans damaged by stem-boring pests were investigated and counted. Each hole with fresh insect feces was counted as one larva, and the insect feces in the holes were cleaned up after treatment. The holes of each treatment were checked 3d and 7d after the spraying of the agent. The holes of the longhorn beetle that did not produce new feces were counted as dead. The insect feces in the holes must be cleaned up after each inspection. The insect population reduction rate and control effect of each agent on the larvae of the star longhorn beetle were calculated.

[0050]

[0051]

[0052] Table 2 Control effect of different penetration aids on the stem borer of Hickory nut

[0053]

[0054] Note: “ / ” means no control effect.

[0055] As shown in Table 2, 3 days after application, the control effects of different penetration aids are better than those without the addition of penetration aids. Among them, the control effects of ratios 8 and 9 are better, both greater than 80%. 7 days after application, the control effects of ratios 3 to 9 can reach more than 78%, and the control effect of ratio 9 can reach more than 95%. Therefore, the thin-shell pecan wood penetration aid of the present invention has broad application prospects.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thin-shell pecan wood penetration aid, characterized in that The invention comprises fatty acid methyl ester ethoxylate, polyether modified trisiloxane and sodium dodecylbenzene sulfonate, wherein the mass ratio of the fatty acid methyl ester ethoxylate, polyether modified trisiloxane and sodium dodecylbenzene sulfonate is (1-2): (1-2): (1-2).

2. The thin-shell hickory wood penetration aid according to claim 1, characterized in that The thin-shell hickory wood penetration aid consists of fatty acid methyl ester ethoxylate, polyether modified trisiloxane, sodium dodecylbenzene sulfonate and an organic solvent, and the mass fraction of the organic solvent is less than or equal to 70%.

3. The thin-shell hickory wood penetration aid according to claim 2, characterized in that The organic solvent is selected from one or more of ethylene glycol, polyethylene glycol and propylene glycol.

4. The thin-shell hickory wood penetration aid according to claim 1, characterized in that The mass ratio of the fatty acid methyl ester ethoxylate, polyether-modified trisiloxane and sodium dodecylbenzene sulfonate is 1:2:

1.

5. The thin-shell hickory wood penetration aid according to claim 1, characterized in that The mass ratio of the fatty acid methyl ester ethoxylate, polyether-modified trisiloxane and sodium dodecylbenzene sulfonate is 1:2:

2.

6. The thin-shell hickory wood penetration aid according to claim 2, characterized in that The thin-shell hickory wood penetration aid consists of 10-20% by mass of fatty acid methyl ester ethoxylate, 10-20% by mass of polyether modified trisiloxane, 10-20% by mass of sodium dodecylbenzene sulfonate and 40-70% by mass of ethylene glycol.

7. The thin-shell hickory wood penetration aid according to claim 6, characterized in that The thin-shell hickory wood penetration aid consists of 10% by mass of fatty acid methyl ester ethoxylate, 20% by mass of polyether-modified trisiloxane, 10% by mass of sodium dodecylbenzene sulfonate and 60% by mass of ethylene glycol.

8. The thin-shelled hickory wood penetration aid according to claim 6, characterized in that The thin-shell hickory wood penetration aid consists of 20% by mass of fatty acid methyl ester ethoxylate, 20% of polyether-modified trisiloxane, 20% of sodium dodecylbenzene sulfonate and 40% of ethylene glycol.

9. The thin-shelled hickory wood penetration aid according to claim 6, characterized in that The thin-shell hickory wood penetration aid consists of 20% by mass of fatty acid methyl ester ethoxylate, 10% of polyether modified trisiloxane, 20% of sodium dodecylbenzene sulfonate and 50% of ethylene glycol.

10. A use of the thin-shelled hickory wood penetration aid according to any one of claims 1 to 9, characterized in that: The thin-shell pecan tree penetration aid and tree medicine solution are mixed and applied to the tree trunk.

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