CN111034744B - Application of ethyl linoleate in prevention and treatment of pine wilt disease - Google Patents
Application of ethyl linoleate in prevention and treatment of pine wilt disease Download PDFInfo
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- A—HUMAN NECESSITIES
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- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
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- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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Abstract
The invention belongs to the technical field of agricultural pest control, and particularly relates to application of ethyl linoleate in prevention and control of pine wilt diseases. The scheme of the invention is based on the scheme of using ethyl linoleate to prevent and control the pine wilt disease in the prior art, and fluorite nano powder modified by juice of a selected succulent plant is further added into the ethyl linoleate, and the content of the fluorite nano powder can be 0.5-5 mu l/m3Under the condition of low dosage of ethyl linoleate of pine tree bodies, the diapause rate of the pine wood nematodes is further improved, so that a large number of pine wood nematodes stop breeding and form diffused pine wood nematodes (including diffused third-instar larvae (L))III) And spread type four instar larva (L)IV) To reduce the spread of the vector insect Monochamus alternatus in the emergence period of 1-5 months in the next year, and can effectively prevent and control the pine wilt disease.
Description
Technical Field
The invention belongs to the technical field of agricultural pest control, and particularly relates to application of ethyl linoleate in prevention and control of pine wilt diseases.
Background
Pine wood nematode disease, called cancer of pine, is the most dangerous forest disease in the world, is a destructive epidemic disease of Pinaceae plants, can die 2-3 months after host plants are infected with the disease, can destroy the whole pine forest in 3-5 years, and has extremely strong harmfulness. The destructive nature of the pine wilt disease hazard lies in: the pathogenicity is strong, and the death speed of the host is high; spread quickly and are often out of the way; once it occurs, the treatment difficulty is great. It not only causes huge loss to national economy, but also destroys natural landscape and ecological environment, and poses serious threat to China's rich pine forest resources. At present, pine wood nematode disease is mainly treated by removing all disease trees, but the effect is not obvious because of the specificity of the pathogenic life cycle. Therefore, it is urgent to find a suitable method for prevention and treatment based on the pathogenic mechanism.
The pathogeny of the pine wood nematode disease is the pine wood nematode, which is one of the most important foreign invasive species in China. The key factor for killing pine trees by the pine wood nematodes is the mass propagation of the pine wood nematodes in the tree bodies. And its propagation and diffusion among pine trees depends on vectorThe Chinese caterpillar fungus is carried by Monochamus alternatus. The life cycle of the pine wood nematode can be divided into two parts, namely a propagation cycle and a diffusion cycle. Every 6-10 months, the breeding type pine wood nematode parasitizes in the resin tract of the xylem of healthy pine trees, and breeds in large quantities at the speed of about 4d generation and gradually spreads all over the plant, and causes the damage and death of resin tract parenchyma cells and epithelial cells, so that the plant loses water, the transpiration is reduced, and the resin secretion is reduced and stopped sharply. The external symptoms of attack by pine wood nematodes are the trace of the pine needle longicorn eating the bark on the lateral branches; the needles gradually lose green color, turn yellow brown or even reddish brown, and wilted until the whole plant withers. The initial onset time of the woodland pine wood nematode disease is generally at the beginning of 6 months, the onset peak of the pine wood nematode disease is in 7 and 8 months, pine trees infected by the pine wood nematode are objects for spawning of monochamus alternatus hopes, and the pine wood nematode enters diapause after 1-5 months of the next year to form diffusion type pine wood nematode. Pine wood nematode first forms a diffuse type third instar larva (L) by moltingIII) And gather around the pupa chamber of Monochamus alternatus to form diffused four-instar larvae (L) in 6 monthsIV) And as xylem monochamus alternatus emerges from the exit hole, it is carried along to new healthy pine trees, beginning a new cycle of infestation. L isIVThe wounds caused on the bark of the monochamus alternatus either eating or laying eggs enter a resin channel, then molting forms imagoes, the female and male imagoes lay eggs after copulation, the eggs become reproductive pine wood nematodes after incubation and breed in large quantities, so that pine trees quickly wither and yellow to become targets for the monochamus alternatus to lay eggs, and the larvae of the hatched monochamus alternatus enter a pine wood nematode disease tree to eat a moth channel to form a pupa chamber. The two are coordinated and matched to provide the required conditions for the opposite party to complete the life history, and the self development is completed by utilizing the conditions created by the opposite party. In summary, the mass multiplication of pine wood nematodes is a direct cause of death in pine trees. And spread type third instar larva (L)III) And spread type four instar larva (L)IV) The matching of the formation time and the emergence time of monochamus alternatus is the key point of the carrying and spreading of the pine wood nematode. It can be seen how to effectively control the diffused type of third instar larvae (L) during the eclosion period of Monochamus alternatusIII) And spread type four instar larva (L)IV) The amount of (A) is (B) is (A) is (B) the prevention and treatment tool for the pine wood nematode diseaseHas positive significance.
Chinese patent CN101856023A discloses a method for preventing and treating pine wood nematode disease by placing ethyl linoleate in pine trees containing reproductive pine wood nematodes. Forest experiments show that in the period of 6 to 10 months every year, especially in the early 6 months of the initial disease, ethyl linoleate is applied to pine trees, so that the development of the pine wood nematodes in a breeding cycle can be stopped, the population density of the pine wood nematodes is reduced, the mortality of the pine trees is reduced, meanwhile, the pine wood nematodes enter a diffusion cycle 5 to 10 months ahead of time, and the pine wood nematodes die before the emergence of the morbus monochamus alternatus in the next 5 months, so that the aim of interfering the further propagation and diffusion of the morbus monochamus alternatus is fulfilled, the mortality of the pine trees in a pine wood nematode occurrence area is reduced, the prevention and control aim of further propagation and expansion in a forest area is fulfilled, and the problems of mass propagation and rapid diffusion of the pine wood nematodes in a pine nematode epidemic situation occurrence area can be effectively solved. However, the control efficiency of ethyl linoleate still needs to be improved.
Disclosure of Invention
Therefore, the invention aims to provide the application of the ethyl linoleate in the prevention and treatment of the pine wilt disease.
In order to solve the technical problems, the application of the ethyl linoleate in the prevention and treatment of the pine wilt disease is characterized in that succulent plant modified nano fluorite powder is also added into the ethyl linoleate.
Specifically, the succulent plant modified nano fluorite powder is fluorite powder subjected to succulent plant juice modification treatment.
Specifically, the succulent plant juice is juice obtained by physically squeezing succulent plants.
Specifically, the succulent plant comprises pinus pumila or pinus persiciformis.
Specifically, the addition amount of the succulent plant modified nano fluorite powder accounts for 1-10wt% of the amount of the ethyl linoleate.
Specifically, the succulent plant modified nano fluorite powder is modified according to the following steps: crushing fluorite, completely soaking the crushed fluorite in juice obtained by physically squeezing selected succulent plants, fully soaking, drying the fluorite at low temperature, and grinding the fluorite into nano powder to obtain the fluorite-containing succulent plant.
Specifically, the ethyl linoleate and the succulent plant modified nano fluorite powder are applied to pine trees of reproductive pine wood nematodes.
Specifically, the application amount of the ethyl linoleate is 0.5-5 mu l/m3Pine tree body.
Specifically, the application of the ethyl linoleate in the prevention and treatment of the pine wilt disease comprises the step of fully dispersing the succulent plant modified nano fluorite powder in the ethyl linoleate.
Specifically, the application of the ethyl linoleate in the prevention and treatment of the pine wilt disease comprises the steps of adsorbing the ethyl linoleate dispersed with the modified nano fluorite powder in a carrier with adsorbability and a slow-release effect, and placing the carrier in pine trees containing propagation type pine wilt nematodes.
The scheme of the invention is based on the scheme of using ethyl linoleate to prevent and control the pine wilt disease in the prior art, and fluorite nano powder modified by juice of a selected succulent plant is further added into the ethyl linoleate, and the content of the fluorite nano powder can be 0.5-5 mu l/m3Under the condition of low dosage of ethyl linoleate of pine tree bodies, the diapause rate of the pine wood nematodes is further improved, so that a large number of pine wood nematodes stop breeding and form diffused pine wood nematodes (including diffused third-instar larvae (L))III) And spread type four instar larva (L)IV) To reduce the spread of the vector insect Monochamus alternatus in the emergence period of 1-5 months in the next year, and can effectively prevent and control the pine wilt disease.
According to the scheme, during the 6-10 months per year, the ethyl linoleate dispersed with the fluorite nano powder subjected to modification treatment by the juice of the selected succulent plant is applied, so that the development of the pine wood nematodes in the breeding cycle can be stopped, the population density of the pine wood nematodes can be reduced, the mortality of pine trees can be reduced, meanwhile, the pine wood nematodes can enter the diffusion cycle 5-10 months in advance, the pine wood nematodes die before the eclosion of the medium insect Monochamus alternatus in the next 5 months, the further propagation and diffusion of the medium insect Monochamus alternatus can be interfered, the mortality of pine trees in a pine wood nematode occurrence area can be reduced, the prevention and control target of further propagation and expansion in a forest area can be achieved, and the problems of mass propagation and rapid diffusion of the pine wood nematodes in a pine nematode epidemic situation occurrence area can be solved.
Detailed Description
Example 1
Taking the succulent plant whole peaches and beauty plants, cleaning and naturally airing, and then collecting the juice of the peaches and beauty plants for later use by adopting a physical squeezing method. And crushing fluorite and sieving the crushed fluorite with a sieve of 100-plus-200 meshes to obtain the fluorite powder for later use.
And (2) completely soaking the fluorite powder in enough peach meiren plant juice (based on the fact that the fluorite powder can be completely soaked at the beginning of soaking and liquid juice still exists after soaking), fully soaking for 4-6h, drying the fluorite at low temperature (20-30 ℃) until the water content is lower than 5wt%, and grinding the fluorite powder to nano powder (50-200 nm) to obtain the finished product.
And adding the prepared modified fluorite nano powder into ethyl linoleate according to the addition amount of 1wt% to be fully dispersed, and performing prevention and treatment on the pine wood nematodes.
Example 2
Taking the whole succulent pinus sylvestris, cleaning and naturally airing, and then collecting pinus sylvestris plant juice for later use by adopting a physical squeezing method. And crushing fluorite and sieving the crushed fluorite with a sieve of 100-plus-200 meshes to obtain the fluorite powder for later use.
And (2) completely soaking the fluorite powder in enough pinus albus plant juice (based on the fact that the fluorite powder can be completely soaked at the beginning of soaking and liquid juice still exists after soaking), fully soaking for 4-6h, drying the fluorite at low temperature (20-30 ℃) until the water content is lower than 5wt%, and grinding the fluorite powder to nano powder (50-200 nm) to obtain the fluorite powder.
And adding the prepared modified fluorite nano powder into ethyl linoleate according to the addition amount of 1wt% to be fully dispersed, and performing prevention and treatment on the pine wood nematodes.
The scheme of the following application example of the invention is further researched on the basis of the method for preventing and treating the pine wood nematode disease by placing ethyl linoleate in pine trees containing reproductive pine wood nematodes disclosed in the prior art CN101856023A, and the setting and operation modes of the following application example refer to the scheme disclosed in the patent for effect verification and comparison.
Application example 1
In the 6 th last ten days of the year, in a pine planting region in Jilin city, Jilin province, 120 pinus massoniana containing reproductive pine wood nematodes are selected for effect verification, and the specific identification method is as follows: pine trees damaged by the pine wood nematodes do not flow fat after drilling, lateral branches have a Monochamus alternatus feeding trace, and part of pine needles lose green.
Selecting pine trees, using 20 trees as a first experimental group, 20 trees as a second experimental group, 20 trees as a third experimental group, 20 trees as a fourth experimental group, 20 trees as a control group and 20 trees as a blank group, and drilling holes with the diameter of 1cm and the depth of 2cm at different heights on the sunny side of the tree body by using electric drills.
The modified fluorite powder-containing ethyl linoleate prepared in example 1 was directly added dropwise to the wells of the pine tree of the first experimental group at a dose of 1. mu.l/well, controlling the ethyl linoleate dose at 3. mu.l/m3Pine bodies;
directly dripping 1 μ l/well of ethyl linoleate dispersed with Sucus Persicae in 1wt% into the wells of the second experimental group of pine trees, and controlling the dosage of ethyl linoleate to be 3 μ l/m3Pine bodies;
the modified fluorite powder-containing ethyl linoleate prepared in example 2 was added directly dropwise to the wells of the third experimental pine tree at a dose of 1. mu.l/well, controlling the ethyl linoleate dose at 3. mu.l/m3Pine bodies;
directly dripping 1 μ l/well of ethyl linoleate dispersed with white flower pinus koraiensis juice (1 wt%) into the wells of the pine tree of the fourth experimental group, wherein the dosage of the ethyl linoleate is controlled to be 3 μ l/m3Pine bodies;
directly dripping ethyl linoleate into control pine tree, wherein the dosage of ethyl linoleate is controlled to be 3 μ l/m3Pine bodies;
the blank pine tree is not added with any ethyl linoleate and modified fluorite powder.
After 10 days, the bursaphelenchus xylophilus isolated from Pinus massoniana by Bellman funnel method was observed under microscope. The number of the pine wood nematodes which stop breeding in each group of pine trees is respectively measured, the diapause rate of the pine wood nematodes is calculated, the existence condition of the diffused pine wood nematodes in each group of pine wood nematodes is observed, and the experimental results are recorded as shown in the following table 1.
TABLE 1 treatment of the groups of Bursaphelenchus xylophilus
Therefore, in the scheme of the embodiment, the fluorite nano powder modified by succus of succus mori is added into ethyl linoleate, so that the diapause rate of the pine wood nematodes can be further improved under the condition of low dosage of ethyl linoleate application amount, a large amount of pine wood nematodes stop breeding, and the diffused pine wood nematodes (including diffused third-instar larvae (L)III) And spread type four instar larva (L)IV) To reduce the spread of the vector insect monochamus alternatus during emergence in the next year, and can effectively prevent and control the pine wilt disease.
And then, further observing the growth conditions of the pine trees in the first experiment group, the second experiment group, the third experiment group and the fourth experiment group, wherein the proportion of pine tree infection to the pine wood nematode disease in the first experiment group, the second experiment group, the third experiment group and the fourth experiment group is less than 10%, the proportion of pine tree infection to the pine wood nematode disease in the control group is about 18%, and the blank group is more than 85%.
Application example 2
In the same operation manner as in application example 1, in the last 6 months of the year, in the pine planting region in Jilin city, Jilin province, 80 pinus massoniana containing reproductive pine wood nematodes are selected for effect verification, and the specific identification method is as follows: pine trees damaged by the pine wood nematodes do not flow fat after drilling, lateral branches have a Monochamus alternatus feeding trace, and part of pine needles lose green.
Selecting 20 of pine trees as a first experimental group, 20 of pine trees as a second experimental group, 20 of pine trees as a third experimental group and 20 of pine trees as a fourth experimental group, and drilling holes with the diameter of 1cm and the depth of 2cm on the sunny surface of the pine tree by using electric drills.
The dose of ethyl linoleate containing modified fluorite powder prepared in the above example 1 was directly dropped into the pores of the pine tree of the first experimental group at a rate of 1. mu.l/pore, and the amount of linoleic acid was controlledThe ethyl acetate dosage is 0.5 μ l/m3Pine bodies;
the modified fluorite powder-containing ethyl linoleate prepared in example 1 was directly added dropwise to the wells of the second experimental pine tree at a dose of 1. mu.l/well, controlling the ethyl linoleate dose at 5. mu.l/m3Pine bodies;
the modified fluorite powder-containing ethyl linoleate prepared in example 2 was added directly dropwise to the wells of the third experimental pine tree at a dose of 1. mu.l/well, controlling the ethyl linoleate dose at 0.5. mu.l/m3Pine bodies;
the modified fluorite powder-containing ethyl linoleate prepared in example 2 was added directly dropwise to the wells of the pine trees of the fourth experimental group at a dose of 1. mu.l/well, controlling the ethyl linoleate dose at 5. mu.l/m3Pine tree body.
After 10 days, the bursaphelenchus xylophilus isolated from Pinus massoniana by Bellman funnel method was observed under microscope. The number of the pine wood nematodes which stop breeding in each group of pine trees is respectively measured, the diapause rate of the pine wood nematodes is calculated, the existence condition of the diffused pine wood nematodes in each group of pine wood nematodes is observed, and the experimental results are recorded as shown in the following table 2.
TABLE 2 treatment of the groups of Bursaphelenchus xylophilus
It can be seen that the embodiment adds fluorite nano-powder modified by succus into ethyl linoleate at 0.5-5 μ l/m3The pine body has better prevention and treatment effects under the dosage of the pine body.
And the growth conditions of the pine trees in each group are further observed subsequently, the pine tree infection rate of the pine wood nematode disease in each experimental group is lower than 10 percent, and therefore, the method can effectively prevent and treat the pine wood nematode disease.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (5)
1. The application of ethyl linoleate in prevention and treatment of pine wilt diseases is characterized in that nano fluorite powder modified by succus is also added into the ethyl linoleate;
said succulent plant comprises pinus parviflora or pinus persiciformis;
the addition amount of the succulent plant modified nano fluorite powder accounts for 1wt% of the amount of the ethyl linoleate;
the application amount of the ethyl linoleate is 0.5-5 mu l/m3Pine tree body.
2. The use of ethyl linoleate in the control of pine wilt disease according to claim 1, wherein succus is juice obtained by physically squeezing succus plants.
3. The application of ethyl linoleate in prevention and treatment of pine wilt disease according to claim 2, wherein succulent plant modified nano fluorite powder is subjected to modification treatment according to the following steps: crushing fluorite, completely soaking the crushed fluorite in juice obtained by physically squeezing selected succulent plants, fully soaking, drying the fluorite at low temperature, and grinding the fluorite into nano powder to obtain the fluorite-containing succulent plant.
4. The use of ethyl linoleate for the control of pine wood nematode disease according to any one of claims 1 to 3, wherein the ethyl linoleate and the succulent plant-modified nanofilamentite powder are applied to pine trees which breed pine wood nematodes.
5. The use of ethyl linoleate in the control of pine wilt disease according to claim 4, comprising the step of fully dispersing the succulent plant-modified nano-fluorite powder in the ethyl linoleate.
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| JPS5581801A (en) * | 1978-12-13 | 1980-06-20 | Kazuo Nagai | Treatment of plant root by control agent |
| CN101849539A (en) * | 2010-06-11 | 2010-10-06 | 中国科学院动物研究所 | Application of ethyl palmitate in preventing and controlling pine wilt disease |
| CN101856022A (en) * | 2010-06-11 | 2010-10-13 | 中国科学院动物研究所 | Application of ethyl oleate in prevention and control of bursaphelenchus xylophilus |
| KR101641927B1 (en) * | 2015-11-25 | 2016-07-25 | 주식회사 그린 아그로텍 | Attracting agent composition for insect vector of pine wilt disease and method of controlling pine wilt disease using it |
| CN107912453A (en) * | 2017-10-19 | 2018-04-17 | 广西壮族自治区金秀瑶族自治县科学技术情报研究所 | A kind of control method of pine tree pine nematode |
| WO2019059600A2 (en) * | 2017-09-19 | 2019-03-28 | 전남대학교산학협력단 | Composition comprising methyl salicylate or derivative thereof as effective ingredient for controlling bursaphelenchus xylophilus disease and method for controlling bursaphelenchus xylophilus using same |
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2019
- 2019-12-25 CN CN201911360336.8A patent/CN111034744B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5581801A (en) * | 1978-12-13 | 1980-06-20 | Kazuo Nagai | Treatment of plant root by control agent |
| CN101849539A (en) * | 2010-06-11 | 2010-10-06 | 中国科学院动物研究所 | Application of ethyl palmitate in preventing and controlling pine wilt disease |
| CN101856022A (en) * | 2010-06-11 | 2010-10-13 | 中国科学院动物研究所 | Application of ethyl oleate in prevention and control of bursaphelenchus xylophilus |
| KR101641927B1 (en) * | 2015-11-25 | 2016-07-25 | 주식회사 그린 아그로텍 | Attracting agent composition for insect vector of pine wilt disease and method of controlling pine wilt disease using it |
| WO2019059600A2 (en) * | 2017-09-19 | 2019-03-28 | 전남대학교산학협력단 | Composition comprising methyl salicylate or derivative thereof as effective ingredient for controlling bursaphelenchus xylophilus disease and method for controlling bursaphelenchus xylophilus using same |
| CN107912453A (en) * | 2017-10-19 | 2018-04-17 | 广西壮族自治区金秀瑶族自治县科学技术情报研究所 | A kind of control method of pine tree pine nematode |
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