CN115053736A - Novel aphid control method for goldenrain tree by micropore drying injection - Google Patents
Novel aphid control method for goldenrain tree by micropore drying injection Download PDFInfo
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/30—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N51/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N53/00—Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P7/00—Arthropodicides
- A01P7/04—Insecticides
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Abstract
The invention belongs to the field of garden plant protection, and discloses a novel method for preventing and controlling goldenrain tree aphids through micropore injection, aiming at pests such as aphids of goldenrain tree, the invention firstly determines the optimal prevention and control time, then micropore injection is carried out, and injection-drying liquid medicine is prepared, wherein the injection-drying liquid medicine is prepared by adding water into 4.5% high-efficiency cypermethrin emulsion in water, 20% imidacloprid aqueous solution in water, MA24P lauryl phosphate and Tween-80 compounded surfactant and diethylaminoethanol caproate for dilution, and has synergistic effect on aphids prevention and control; the invention adopts the micropore stem injection technology at proper time, utilizes the transpiration of the tree body to deliver the prepared control medicament to each branch and leaf of the tree body, and the aphids die after eating the plant juice containing the liquid medicament, thus the control is comprehensive and the efficiency is high. Effectively reduces the occurrence and harm of the aphid of the goldenrain tree, and has great theoretical and practical value in the aspect of the aphid control of the goldenrain tree.
Description
Technical Field
The invention belongs to the field of garden plant protection, and provides a novel method for preventing and controlling pests such as aphids and the like aiming at a street tree.
Background
Koelreuteria paniculata (Koelreuteria paniculata) Sapindaceae family Koelreuteria genus deciduous tree. Pleased with light and resistant to half-shade; cold resistance, salt and alkali resistance, drought resistance and barren resistance, and strong environmental adaptability; deep rooted nature, resisting smoke. The tree form is tall and straight, branches and leaves are luxuriant and beautiful, the trees are full of yellow flowers in summer, and the fruits are bright red in autumn, which are common species of the trees in the shade.
Goldenrain polymorphic aphid (Periphyllus koelreuteriae) is an important pest of garden plants such as goldenrain tree, ailanthus altissima, horse chestnut and the like, and the pest severity degree is increasing in recent years. Goldenrain polymorphic aphis goldens takes adult aphids and nymph as host plant budlets, particularly prefers to be harmful to young trees, tillers and young branch leaves generated after pruning, and is harmful to collectively stabbing and absorbing on the leaf back. When the aphid amount is less, the leaves slightly curl to the back; when the density of insect population is higher, the leaves are rewound, internodes are shortened, new leaves are germinated and deformed or curled and contracted, and branches are withered to die in serious cases. Honeydew secreted by aphids forms a layer of oily jelly which covers the surfaces of branches and leaves and is very easy to be infected with sooty mould to influence the photosynthesis and respiration of goldenrain trees; the oil is dripped on the road surface to form oil stain, which influences the passing of pedestrians. The simplified life history of aphids is five generations of aphids, and eggs live through the winter at bud cracks, bark cracks, scars and the like. After incubation of overwintering eggs in late March, along with sprouting of new sprouts and sprouting of new leaves, the dry mother is transferred to the new leaves of the new sprouts to be harmful. The dry mother embryo in late April produces wingless parthenogenetic female aphids. In late Aphis formosanus, a great amount of winged aphids appear, and the migratory flight diffusion is carried out, so that the wormhole is greatly increased, which is the serious damage period of the Koelreuteria paniculata. In the last ten days of May, various aphids such as wingless parthenogenetic female aphid and winged parthenogenetic female aphid can be seen, and diapause aphid begins to appear. After June, the wingless parthenogenetic aphids and winged parthenogenetic aphids on the goldenrain tree are reduced. And (3) returning the diapause aphids to activities in Nomber to Nomber, producing sexual aphids in the last ten days of Nomber, mating and laying eggs, wherein the full period of laying eggs is from the last Nomber to the last December, and the eggs are overwintering.
A traditional prevention and control method of goldenrain aphids comprises the following steps: (1) and (4) spraying prevention and control. In the high aphid development period, chemical agents are adopted for spray control, such as 10% imidacloprid, 50% pymetrozine or other agents. The method has great environmental pollution and unsatisfactory prevention and treatment effect. Koelreuteria paniculata is used as a tree species of urban sidewalks, the height is generally more than 20 meters, the range of a conventional high-pressure spraying machine is less than 20 meters, and the top tip liquid medicine cannot cover the Koelreuteria paniculata, so that Koelreuteria paniculata and Koelreuteria paniculata are easy to recur. (2) And (4) biological control. The method mainly introduces the harmonia axyridis egg card or puts encarsia formosa to prevent and control the goldenrain polymorphic aphid. Although the method is environment-friendly, the control technology has higher requirements, such as the time for releasing natural enemy insects, the environmental influence is larger, and the control effect is not stable. (3) And (4) physical prevention and control. The method utilizes the characteristic that goldenrain polymorphic trichomonas vinelaphus is hatched just and the dry mother is wingless and is harmful along the tree on the trunk, and adopts yellow armyworm adhesive tape to surround the trunk and block the approach of aphid on the tree. The method has control effect on aphids below the barrier, but does not play any role on the aphids scattered at twigs and axilla buds. For example, CN201910776739.4 is a method for controlling Koelreuteria paniculata polymorphic aphids of Koelreuteria paniculata, CN202111176080.2 is a method for controlling Koelreuteria paniculata overwintering aphids, CN202010336814.8 is a method for controlling Koelreuteria paniculata aphids, and the like, still adopt the traditional control method, so that the control period is long, the cost is high, the program is complicated, the control effect is difficult to greatly improve, the influence of the natural aphid quantity variation law of the Koelreuteria paniculata aphids on the control effect is not concerned, the practical application lacks guidance, and the method is difficult to be applied to the practical situation in a combined manner.
At present, the trunk medicine injection technology is to introduce systemic medicine into a specific part of a trunk by using an artificial or mechanical method, and the systemic medicine is transferred to each organ of a tree by means of transpiration pulling force of the tree body so as to kill diseases and pests and achieve the purpose of controlling plant diseases and insect pests. The pesticide is prevented from directly contacting the environment, thereby avoiding the harm of the pesticide to human, livestock and natural enemies, and being an environment-friendly control method. At present, trunk pesticide injection technology has some application researches in the aspect of tree pest control, for example, pesticide injection dosage, method and time are screened in ' nuisanceless pesticide screening for preventing and controlling Korean pine cone pests ' by trunk pesticide injection technology ', and finally, the prevention and control method for the Korean pine cone pests is obtained. However, no related report research exists on a medicament drying prevention and control method for aphids of goldenrain trees. The prevention and control time of the aphids of the goldenrain trees and the selection of medicaments play an important role in the prevention and control effect, and other insect pest methods of other trees are difficult to adopt.
The invention aims to solve the problem of high-efficiency and pollution-free prevention and control of goldenrain tree aphids thoroughly, researches the application of the agent for drying on the prevention and control of goldenrain tree aphids according to the growth characteristics of goldenrain tree species and the natural aphid quantity variation law of goldenrain polymorphic gloriodes in combination with daily maintenance management measures of goldenrain tree goldenrain trees, well solves the defects of the traditional chemical prevention and control, overcomes the defects of low prevention and control effects of physical prevention and biological prevention, effectively reduces the occurrence and harm of goldenrain tree aphids, and has important theoretical and practical value on the control of goldenrain tree aphids.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a novel aphid prevention and control method for goldenrain trees by micropore injection, the method selects the optimal prevention and control time, then combines the micropore injection technology, utilizes the transpiration of trees, conveys the prepared prevention and control medicament to each branch and leaf of the trees, and the aphids die after eating the plant juice containing the liquid medicine, so that the prevention and control are comprehensive and high in efficiency.
In order to realize the purpose, the technical scheme is as follows:
(1) determining the prevention and treatment period
Selecting a goldenrain tree trunk, removing dead bark and warped bark by a scraper, and winding the trunk for a circle by using a two-sided armyworm adhesive tape to ensure that the adhesive tape and the bark have no gap. Observing whether the pest-sticking adhesive tape has an initial hatched dry mother and observing the condition of new budding of the goldenrain tree; when the increase speed of the number of the dry mothers hatched initially on the pest-sticking adhesive tape is observed to be slowed down, namely the number of the dry mothers hatched initially on the pest-sticking adhesive tape reaches a high peak value, and part of the new sprouts of the goldenrain tree germinates (about 30-40% of the number), the optimal period for prevention and treatment is obtained.
The determination of the optimal prevention and control period plays a key role in preventing and controlling aphid of the goldenrain tree, the expected prevention and control effect can be achieved only in the optimal prevention and control period by combining a subsequent stem injection method, the goldenrain tree is prevented and controlled prematurely, recurred subsequently and is difficult to be effectively controlled for a long time, and after the prevention and control period is delayed, the growth vigor of the goldenrain tree is weakened, and the damage to leaves is large.
(2) Dry injection method
Selecting a relatively flat area at the junction of a trunk of the tree and a primary branch point, scraping a 5cm multiplied by 5cm trunk injection area by using a bark special scraper, and scraping dead bark and tilted bark of the bark until healthy tissues of the bark are obtained. The method adopts the following components in concentration of 1: the potassium permanganate disinfectant solution with the volume of 2000 times is used for cleaning the surface of the injection dry area for later use.
And drilling with an electric drill (the drill bit is a 5mm woodwork three-point drill) at an angle of 30 degrees with the horizontal in the trunk injection area to the xylem of the tree with the depth of about 3cm-5 cm.
Thirdly, preparing a dry injection liquid: weighing and mixing the high-efficiency cypermethrin aqueous emulsion with the mass concentration of 4.5% and the imidacloprid aqueous solution with the mass concentration of 20% to obtain mixed liquid medicine, adding the compounded surfactant and the diethylaminoethanol caproate into the mixed liquid medicine, adding water for diluting to obtain injection-dried liquid medicine, and filling the injection-dried liquid medicine into a hanging liquid bag for later use;
further, the volume ratio of the high-efficiency cypermethrin aqueous emulsion to the imidacloprid aqueous solution is 1-2: 1-2;
the surfactant is prepared by mixing lauryl phosphate MA24P, tween-80 and the mixed liquor according to the mass ratio of 2-4: 1, the mass-volume ratio of the surfactant to the mixed liquor is 0.5-2.5 g/100mL, the mass-volume ratio of the caproic acid diethylaminoethanol ester to the mixed liquor is 0.01-0.8 g/100mL, and the volume of the surfactant after dilution with water is 10-13 times of the volume of the mixed liquor. According to the situation, a defoaming agent, such as glycerol polyoxypropylene ether GP-330 or organic silicon FAG-470 and the like, can be added, and the adding amount is 3-8 ppm of the injection-dried liquid medicine. This is the optimum dosage range of the present invention after screening, and it is difficult to achieve the desired effect beyond this range.
According to the invention, a large number of experiments show that different surfactants have different influences on goldenrain plants, and the lauryl phosphate MA24P and the tween-80 surfactants are screened out finally and compounded according to a specific proportion, so that after the compounded surfactant is used, the pesticide effect of the pesticide for injecting the dry pesticide liquid can be increased, the using amount of the pesticide can be reduced, the pesticide for injecting the dry pesticide liquid can enter the interior of leaves more easily, and the synergistic effect on aphid prevention and control can be realized. In the invention, the diethylaminoethanol caproate is also added into the liquid medicine for drying, which can be used as a plant nutrient, and in the invention, the diethylaminoethanol caproate can further promote the drug effect of the liquid medicine for drying and can also ensure that the liquid medicine for drying is kept in the plants for a longer time for prevention and treatment.
And fourthly, connecting the transfusion bottle for preparing the liquid medicine with the special transfusion tube for the fruit tree, adjusting the flow regulator, controlling the dropping speed to be 4-6 seconds per drop, inserting the needle head into the drilling position, and preferably tightly inserting the needle head so as not to loosen and prevent the liquid medicine from flowing out.
And fifthly, sealing the periphery of the trunk injection hole by using sealing cement, observing whether the liquid medicine flows out continuously for about 10-15 minutes, pulling out the needle head after the liquid medicine is completely input, uniformly smearing the liquid medicine at the orifice by using a wound healing agent, and observing the prevention and treatment effect subsequently. Compared with the prior art, the invention has the beneficial effects that:
1. the invention fully utilizes the biological habits of pests and the transpiration principle of plants, adopts the prevention and treatment technologies of pest sticking adhesive tapes, micropore injection drying and the like, and has strong target pertinence and high prevention and treatment efficiency.
2. The goldenrain tree after being prevented and controlled by the invention has normal growth vigor of leaves, aphids on branches and leaves are basically removed, a large number of aphids and eggs are effectively eliminated, and harm is restrained. The novel goldenrain tree aphid ecological micro-treatment method is environment-friendly, causes little pollution, is more suitable for urban landscape roads with dense crowds, and has important theoretical and practical value in the aspect of treatment of goldenrain tree aphids in order to reduce the occurrence and harm of goldenrain tree aphids.
Drawings
FIG. 1 shows the dry mother hatched just below the armyworm adhesive tape;
FIG. 2 shows the dry mother hatched just above the armyworm adhesive tape;
FIG. 3 is aphid status on the leaves before control in example 1;
FIG. 4 shows aphids on the leaves after control in example 1.
Detailed Description
Summary of the test:
the experimental site is located in the Henjiangxi road in the New North region of Hezhou, and the road street trees are goldenrain trees (the diameter of the trees is more than 30 cm; the height is about 30 m). Goldenrain paniculatus is overweight throughout the year, goldenrain paniculatus is damaged by goldenrain paniculatus in 4-6 months and 9-10 months every year, nymphs are full of leaf tips, and the nutrition of a tree body is absorbed, so that the leaf curling and the branch tips are bent, the growth of the tree is slowed down or stopped, and the smut is very easy to induce. The 20% imidacloprid aqua selected in the test is produced by Anhui Jiu Yingyu Limited; the high-efficiency cypermethrin aqueous emulsion with the concentration of 4.5 percent is prepared by Shanghai Nongle biological products, Inc. The liquid medicine can be transmitted up and down in two directions in the plant body, so that the root, trunk, branch and leaf of the plant body all contain the medicine.
The blank control solution for injection of water is 250ml of purified water.
Example 1
(1) Determining control timing
In the middle and last ten days of March (date 3.20), 1.2M of 10 koelreuteria paniculata trunks selected from the West of Hanjiang are firstly cleaned by a scraper to remove dead bark and tilted bark, and then a double-sided yellow armyworm adhesive tape is wound on the trunks for a circle to ensure that no gap is formed between the adhesive tape and the bark. And observing whether the yellow armyworm adhesive tape has an initial hatched mother tree every week, and observing the condition that the goldenrain tree sprouts slightly. About 4 months and 20 days, the increasing speed of the initially hatched dry mother on the armyworm adhesive tape reaches the maximum value (as shown in figure 1-2), and a part (about 30-33%) of new sprouts of the goldenrain tree are germinated, namely the optimal period of control.
(2) Dry injection method
Selecting a relatively flat area at the junction of a trunk of the tree and a primary branch point, scraping a 5cm multiplied by 5cm trunk injection area by using a bark special scraper, and scraping dead bark and tilted bark of the bark until healthy tissues of the bark are obtained. The method adopts the following components in concentration of 1: the potassium permanganate disinfectant solution with the volume of 2000 times of the solution is used for cleaning the surface of the trunk injection area for standby.
And secondly, drilling to the xylem of the tree by using an electric drill (the drill bit is a 5mm woodwork three-pointed drill) in the trunk injection area, wherein the angle between the drill bit and the horizontal line is 30 degrees, and the depth is about 5 cm.
Thirdly, preparing dry medicine injection; weighing 10mL of high-efficiency cypermethrin aqueous emulsion with the mass concentration of 4.5% and 10mL of imidacloprid aqueous solution with the mass concentration of 20% to be mixed to obtain mixed liquid medicine, firstly adding 0.3g of lauryl phosphate MA24P, 0.1g of Tween-80 compounded surfactant and 0.14g of diethylaminoethanol caproate, adding 250mL of diluted water to obtain injection-drying liquid medicine, and filling the injection-drying liquid medicine into a suspending liquid bag for later use;
fourthly, a transfusion bottle which is configured with 250mL of liquid medicine is connected with a special transfusion tube for the fruit tree, a flow regulator is adjusted, and the dropping speed is controlled to be 1 drop in 5 seconds. The needle head is inserted into the drilling position, and the needle head is tightly inserted so as not to loosen and prevent the liquid medicine from flowing outwards.
Sealing the periphery of the injection hole with sealing cement, and observing whether the liquid medicine flows out for about 15 minutes. The prepared medicament has systemic activity and can be transported in the xylem and phloem of the plant body. The liquid medicine should be measured accurately. The absorption condition of the liquid medicine needs to be checked in time 15 minutes after the needle is applied, if the liquid medicine is not absorbed smoothly, the reason needs to be found in time, and the micropore is injected again. And after all the liquid medicine is input, the medicine tube is timely collected, the wound is smeared with a wound healing agent, the healing of the orifice is promoted, and the prevention and treatment effects are observed subsequently.
(3) Data investigation
Before the application, the branches of the goldenrain tree with the length of more than 50cm are randomly tested, and the nymph base of the goldenrain aphid is investigated. Repeat 5 times. The number of remaining live insects of the aphid goldensone marked on the branch of 10 goldenrain tree trees in the treated and control groups was investigated 20 days after the application and was repeated 5 times.
The calculation formula of the population reduction rate and the correction control effect is as follows:
the reduction rate (%) of population (number of pre-drug population-number of post-drug population)/number of pre-drug population × 100;
the control effect (%) was corrected to [1- (number of live insects before drug administration in CK area × number of live insects after drug administration in treatment area)/(number of live insects after drug administration in CK area × number of live insects before drug administration in treatment area) ] × 100.
Example 2
(1) Determining control timing
In the middle and last ten days of March (date 3.20), 1.2M of 10 koelreuteria paniculata trunks selected from the West of Hanjiang are firstly cleaned by a scraper to remove dead bark and tilted bark, and then a double-sided yellow armyworm adhesive tape is wound on the trunks for a circle to ensure that no gap is formed between the adhesive tape and the bark. And observing whether the yellow armyworm adhesive tape has an initial hatched mother tree every week, and observing the condition that the goldenrain tree sprouts slightly. Around 4 months and 20 days, the increasing speed of the initially hatched dry mother on the armyworm adhesive tape reaches the maximum value (as shown in figure 1-2), and part of the new sprout of the goldenrain tree is germinated, namely the optimal period of control.
(2) Dry injection method
Selecting a relatively flat area at the junction of a trunk of the tree and a primary branch point, scraping a 5cm multiplied by 5cm trunk injection area by using a bark special scraper, and scraping dead bark and tilted bark of the bark until healthy tissues of the bark are obtained. The method adopts the following components in concentration of 1: the potassium permanganate disinfectant solution with the volume of 2000 times is used for cleaning the surface of the injection dry area for later use.
And secondly, drilling to the xylem of the tree by using an electric drill (the drill bit is a 5mm woodworking three-pointed drill) in the trunk injection area, wherein the depth of the electric drill is about 4cm, and the angle is 30 degrees from the horizontal downwards.
And thirdly, preparing the dry injection liquid medicine. Weighing 12mL of high-efficiency cypermethrin aqueous emulsion with the mass concentration of 4.5% and 8mL of imidacloprid aqueous solution with the mass concentration of 20% to be mixed to obtain mixed liquid medicine, adding 0.2g of lauryl phosphate MA24P, 0.15g of tween-80 and 0.12g of diethylaminoethanol caproate into the mixed liquid medicine, adding 250mL of water for dilution to obtain injection-drying liquid medicine, and filling the injection-drying liquid medicine into a suspending liquid bag for later use;
fourthly, a transfusion bottle with 250mL of liquid medicine is connected with a special fruit tree transfusion tube, a flow regulator is adjusted, and the dropping speed is controlled to be 1 drop in 5 seconds. The needle head is inserted into the drilling position, and the needle head is tightly inserted so as not to loosen and prevent the liquid medicine from flowing outwards.
Sealing the periphery of the injection hole with sealing cement, and observing whether the liquid medicine flows out for about 15 minutes. The prepared medicament has systemic activity and can be transported in the xylem and phloem of the plant body. The liquid medicine should be measured accurately. The absorption condition of the liquid medicine needs to be checked in time 15 minutes after the needle is applied, if the liquid medicine is not absorbed smoothly, the reason needs to be found in time, and the micropore is injected again. And after all the liquid medicine is completely input, timely collecting the medicine tube, smearing a wound healing agent on the wound, promoting the healing of the orifice, and observing the prevention and treatment effect subsequently.
(3) The data were investigated as in example 1.
Comparative example 1
Control experiment 1: preparing a dry injection liquid: the preparation method is characterized in that 10ml of high-efficiency cypermethrin aqueous emulsion with the mass concentration of 4.5 percent and 10ml of imidacloprid aqueous solution with the mass concentration of 20 percent are added with purified water to be diluted to 250ml, and other operations are the same as the operation of example 1.
Comparative example 2
Control experiment 2: in the configuration of the dry injection solution, the same mass of the lauryl phosphate MA24P of the comparative example 1 was replaced by Tween-80, and the other operations were the same as in example 1.
Comparative example 3
Control experiment 3: in the configuration of the dry injection solution, the lauryl phosphate MA24 in comparative example 1 was replaced by sodium dodecylbenzenesulfonate, and the other operations were the same as in example 1.
Comparative example 4
Control experiment 4: in the configuration of the dry injection solution, diethylaminoethanol caproate in comparative example 1 was removed, and the other operations were the same as in example 1.
Comparative example 5
Control experiment 5: in the formulation of the dry injection solution, diethylaminoethanol caproate in comparative example 1 was replaced with potassium humate, and the other operations were the same as in example 1.
Comparative example 6
The prevention of stem injection was carried out by observing that a small amount of the young hatched dry mother (No. 4/05) appeared on the armyworm adhesive tape, and the germination of the new sprout of the goldenrain tree was very small (about 10% in number), and the other operations were the same as in example 1.
The test results are shown in Table 1
TABLE 1 aphid control analysis of Koelreuteria paniculata with micropore drying
Note: the average number of live insects is to select a plurality of tender branches (4-6) with the length of 2cm, count the number of aphids on the tender branches, and calculate the average number.
Through the above experimental analysis and comparison, the following conclusions can be obtained: in the embodiment 1-2, lauryl phosphate MA24P, tween-80 surfactant and diethylaminoethanol caproate are added into the pesticide for injecting the dry liquid medicine for compounding, so that the control effect of the dry liquid medicine on aphids can be remarkably improved, the control effect can be kept well 60 days after the pesticide is applied, and the plant growth vigor is good. The comparative example 1 only contains the insecticidal component, and the component can hardly enter the leaf to fully exert the effect, so that the insecticidal effect is not as good as that of the examples 1-2; while comparative example 2 only contains one surfactant tween-80, if only contains lauryl phosphate MA24P (the wormhole reduction rate is 86.4% in 20 days and 88.4% in 60 days), the two single surfactants have no influence on the goldenrain tree as the effect of the two surfactants after the two surfactants are compounded, which shows that the two surfactants have synergistic interaction between molecules. Comparative example 3 sodium dodecylbenzenesulfonate was substituted for lauryl phosphate MA24, but some other surface activity was attempted, which was not as effective as examples 1-2, and it was likely that the responses of goldenrain plants to different surfactants were significantly different. Comparative example 4 removal of diethylaminoethanol caproate showed little difference in controlling effect after 20 days, and also achieved excellent controlling effect, but the controlling effect after 60 days was different. In contrast, in comparative example 5, diethylaminoethanol caproate was replaced with potassium humate, and both the control effect and the control stability were reduced, and it is likely that the alkalinity of potassium humate inhibited the exertion of the drug effect of the dry injection solution. In the comparative example 6, the best control time is not selected, so that the biological habit of the pests is not sufficiently controlled, the subsequent relapse risk still exists, and the comprehensive and efficient control is difficult.
Claims (5)
1. A novel aphid control method for goldenrain trees by micropore drying injection is characterized by comprising the following steps:
(one) determining the prevention period
Selecting a goldenrain tree trunk, fixing the goldenrain tree trunk on the trunk by using a double-faced armyworm adhesive tape, observing the initially hatched dry mother on the armyworm adhesive tape, observing the condition that the goldenrain tree is newly germinated, and waiting for the observation that the number of the initially hatched dry mother on the armyworm adhesive tape is slowly increased and part of the newly hatched bud of the goldenrain tree is germinated, wherein the prevention period is a prevention period;
(II) micropore injection drying
1) Selecting a relatively flat area at the junction of the trunk of the tree and the primary branch point, scraping out the trunk injection area by using a special bark scraper, scraping bark dead skin and bark warping until the bark healthy tissue is reached, and cleaning the surface of the trunk injection area by using a disinfectant for later use; drilling downwards in the trunk injection area to the xylem of the tree by using an electric drill with the depth of about 3cm-5 cm;
2) and (5) preparing a dry injection liquid medicine. Weighing and mixing a high-efficiency cypermethrin aqueous emulsion with the mass concentration of 4.5% and an imidacloprid aqueous solution with the mass concentration of 20% to obtain a mixed liquid medicine, adding a compound surfactant and diethylaminoethanol caproate, adding water for dilution to obtain a liquid medicine for injection drying, and filling the liquid medicine into a hanging bag for later use; the surfactant is prepared by mixing lauryl phosphate MA24P, tween-80 and the mixture according to the mass ratio of 2-4: 1;
3) connecting a transfusion bottle for preparing liquid medicine with a transfusion tube, adjusting a flow regulator, inserting a needle head into the position of a drilling hole, sealing the periphery of the injection hole by using sealing cement, observing whether the liquid medicine flows outwards, pulling out the needle head after the liquid medicine is completely input, uniformly coating the needle head at the orifice by using a wound healing agent, and preventing and treating the aphids of the goldenrain tree.
2. An aphid prevention and control new method for goldenrain trees, which is injected dry through micropores, according to claim 1, wherein the volume ratio of the high-efficiency cypermethrin aqueous emulsion to the imidacloprid aqueous solution is 1-2: 1-2.
3. A novel aphid control method for goldenrain tree injected with micropores according to claim 1, wherein the ratio of the surfactant to the mixed liquid medicine by mass volume is 0.5-2.5 g/100mL, and the ratio of the diethylaminoethanol caproate to the mixed liquid medicine by mass volume is 0.01-0.8 g/100 mL.
4. An aphid control method for goldenrain tree injected into micropores according to claim 1, wherein the volume of the diluted goldenrain tree is 10-13 times of the volume of the mixed liquid medicine.
5. An aphid control method for goldenrain tree injected in a micropore according to claim 1, wherein the flow regulator is adjusted to control the dropping speed to 4-6 seconds per drop.
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