CN110896773A - Pollution-free prevention and control method for diseases and pests of apple trees - Google Patents
Pollution-free prevention and control method for diseases and pests of apple trees 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
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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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
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/40—Fabaceae, e.g. beans or peas
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
- A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
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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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
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- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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- A—HUMAN NECESSITIES
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- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
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Abstract
The invention discloses a disease and pest pollution-free control method for apple trees, which comprises the following steps: (1) selecting land; preparing soil, reserving a planting belt for planting the alfalfa; mowing weeds; trimming; (2) after the apple trees are planted, spraying a first pest control spraying agent for the crown in a non-dormancy stage; spraying a second pest control spraying agent to the trunks and soil below the tree crowns in the non-dormancy stage; in the dormant period, spraying lime sulfur mixture once after leaves fall and before sprouts to whiten the trunk; the first spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components: nimbin, bamboo leaf flavone, BT emulsion, ferrous sulfate and water in balance; the second spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components: allicin, nimbin, lime, urea and the balance of water. The spraying agent for preventing and treating the diseases and the insect pests, which is used by the method, has low toxicity, small harm to the environment, apple fruits and planting personnel and good effect of preventing and treating various diseases and insect pests.
Description
Technical Field
The invention relates to the technical field of agricultural planting, in particular to a disease and pest pollution-free control method for apple trees.
Background
The apple is a plant of Malus of Maloideae of Rosaceae, and its tree is deciduous tree. The apple has high nutritive value, is rich in minerals and vitamins, has rich calcium content, is helpful for metabolizing excessive salt in vivo, and malic acid can metabolize heat to prevent obesity of lower body. Apple is a low calorie food that produces approximately 60 kcal per 100 grams. The apple has high solubility of nutrient components and is easy to be absorbed by human body, so it is called "running water". It is beneficial to dissolving sulfur element and making skin smooth and tender. Apples are deciduous trees, have strong polarity, usually grow vigorously, have high crowns, can reach 15 meters in height, and are generally about 3-5 meters in height under cultivation conditions. The trunk is grey brown, the old bark has irregular longitudinal cracks or flaky flaking, and the small branches are smooth.
In order to improve the apple consumption market in China, the planting of apple trees must be considered. At present, one of the main reasons influencing the planting benefit of apple trees is the problem of plant diseases and insect pests. Different prevention and control measures must be carried out according to different plant diseases and insect pests to improve the planting benefit of the apple trees.
The planting of apple trees depends on natural climate, environment and soil. Changes in natural temperature, precipitation and soil fertility may cause diseases and insect pests in apple trees. The damage of the pest to the apple tree is divided into 3 aspects: firstly, harm to apple tree trunks; secondly, the damage to the apple tree leaves; and thirdly, the damage to the apple tree fruits. 3 different diseases and insect pests have different symptoms and manifestations. Firstly, when the trunk of the apple tree is attacked by diseases and insect pests, the apple tree generally has strong infectivity, for example, in the process of generating rot disease of the apple tree, the apple tree which is attacked by the pests is not only stripped in bark and rotten, but also if the treatment is not timely and proper, even the fruit trees in the whole orchard are all suffered from the rot disease, so that the apple tree is apoptotic. Second, it is a common phenomenon that apple trees are infested with pests and diseases. In the process of insect attack on apple leaves, photosynthesis of apple trees is reduced, and the apple trees cannot grow healthily, blossom and bear fruits. Third, the fruit of the apple tree is subject to pests and diseases, a process that generally occurs during the apple ripening stage, and its spread is very rapid.
However, the natural conditions are hard to change by manpower, so that the change of the environment needs to be adapted to, and effective pest control measures need to be made, so that the planting benefit of the apple trees can be better improved.
Disclosure of Invention
The invention aims to provide a disease and insect pest-prevention pollution-free control method for apple trees, the used spraying agent for preventing and treating the disease and insect pests has low toxicity, small harm to the environment, apple fruits and planting personnel, and good effect of preventing and treating various disease and insect pests.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a pollution-free control method for diseases and pests of apple trees comprises the following steps:
(1) selecting plots with fertile soil and good drainage for apple planting, and thoroughly removing various weeds in the plots before planting; arranging ridges during soil preparation, planting apple trees on the ridges, and reserving planting belts with the width of 20-25cm at the two sides of the ridges for planting alfalfa; when the orchard is fertilized, the inorganic fertilizer and the organic fertilizer are mixed for fertilization, the organic fertilizer is thoroughly decomposed and subjected to harmless treatment; timely mowing weeds in the orchard, flatly paving the mowed weeds on ridges for planting apple trees, and removing weeds parasitized by larvae; pruning apple trees every year, and timely pruning apple tree leaves infected with diseases and insect pests;
(2) after the apple trees are planted, spraying a first pest control spraying agent every 12-16 days in a non-dormancy stage on crowns, and not spraying the first pest control spraying agent in a dormancy stage; spraying a second pest control spraying agent every 10-13 days in a non-dormancy stage for the tree trunks and soil below the tree crowns, and not spraying the second pest control spraying agent in a dormancy stage;
in the dormant period, spraying lime sulfur mixture once after leaves fall and before sprouts to whiten the trunk;
the first spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: 0.05-0.1% of azadirachtin, 0.002-0.005% of bamboo leaf flavone, 0.02-0.05% of BT emulsion, 0.1-0.3% of ferrous sulfate and the balance of water;
the second spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: 0.1 to 0.3 percent of allicin, 0.03 to 0.08 percent of azadirachtin, 0.02 to 0.05 percent of lime, 0.03 to 0.06 percent of urea and the balance of water.
Preferably, the alfalfa is mowed on site after it has grown and buried into the soil.
Preferably, before overwintering, the trunk is bound with a straw bundle, the residual larvae can be induced to cocoon in the straw bundle for overwintering, and the straws are taken off in early spring and burnt.
Preferably, the first spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: nimbin 0.08%, bamboo leaf flavone 0.003%, BT emulsion 0.03%, ferrous sulfate 0.2%, and water for the rest.
Preferably, the first spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: nimbin 0.05%, bamboo leaf flavone 0.002%, BT emulsion 0.03%, ferrous sulfate 0.2%, and water for the rest.
Preferably, the second spraying agent for controlling plant diseases and insect pests is prepared from the following components in percentage by weight: allicin 0.2%, nimbin 0.05%, lime 0.03%, urea 0.05% and water for the rest.
Preferably, the second spraying agent for controlling plant diseases and insect pests is prepared from the following components in percentage by weight: allicin 0.3%, nimbin 0.05%, lime 0.02%, urea 0.06% and water for the rest.
The invention has the beneficial effects that:
1. the invention adopts two pest control spraying agents for spraying, wherein the first pest control spraying agent is mainly used for controlling pests and diseases of branches and leaves of apple trees and is sprayed on the leaf surfaces of the apple trees, so that on one hand, pests can generate antifeedant effect on the leaves and interfere the growth process of the pests, thereby further leading the pests to die; on the other hand, the pests cannot molt at a specific time, and the like, so that the pests die; and secondly, the spraying agent for preventing and controlling the plant diseases and insect pests can kill the insect eggs in leaves and barks and the like and prevent the insect eggs from being converted into larvae. The spraying agent for preventing and treating plant diseases and insect pests has better effect on preventing and treating the spider mites, the hawthorn red spiders and the like. The spraying agent for preventing and treating plant diseases and insect pests is sprayed on the apple trees in the non-dormancy stage, so that the spraying agent has good prevention and treatment effects on powdery mildew and early defoliation. In the second spraying agent for preventing and treating plant diseases and insect pests, the allicin and the azadirachtin are matched with a proper amount of lime, so that the allicin and the azadirachtin are easier to permeate into bodies of diseases and pests, and can effectively kill insect eggs in trunks and soil and kill pests hidden in the soil; and has good control effect on rot disease when being matched with the spraying agent for controlling plant diseases and insect pests. And spraying lime sulfur mixture once after falling leaves and before sprouting in the dormant period to whiten the trunk, thereby effectively preventing the fruit trees from being infected by virus, bacteria and the like.
2. According to the invention, a proper amount of ferrous sulfate is added into the first pest control spraying agent, and a proper amount of urea is added into the second pest control spraying agent, so that specific elements can be continuously supplemented, the apple trees are more numerous and luxuriant, the resistance is enhanced, and the pest resistance capability of the apple trees is enhanced. And the first and second pest control sprays have low toxicity, and have small harm to the environment, apple fruits and planting personnel, thus being suitable for popularization and application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a pollution-free control method for diseases and pests of apple trees comprises the following steps:
(1) selecting plots with fertile soil and good drainage for apple planting, and thoroughly removing various weeds in the plots before planting; arranging ridges during soil preparation, planting apple trees on the ridges, reserving planting belts with the width of 20-25cm at two sides of the ridges for planting alfalfa, cutting the alfalfa on the spot after the alfalfa grows, and burying the alfalfa in soil; when the orchard is fertilized, the inorganic fertilizer and the organic fertilizer are mixed for fertilization, the organic fertilizer is thoroughly decomposed and subjected to harmless treatment; timely mowing weeds in the orchard, flatly paving the mowed weeds on ridges for planting apple trees, and removing weeds parasitized by larvae; pruning apple trees every year, and timely pruning apple tree leaves infected with diseases and insect pests;
in order to prevent incomplete pest killing, the trunk can be bound with a straw handle before overwintering, the straw handle can induce and collect the residual larvae in the straw handle to cocoon for overwintering, and the straw handle is taken off in early spring and burnt.
(2) After the apple trees are planted, spraying a first pest control spraying agent every 15 days in a non-dormancy stage on crowns, and not spraying the first pest control spraying agent in a dormancy stage; spraying a second pest control spraying agent every 12 days in a non-dormancy stage on the tree trunks and soil below the tree crowns, and not spraying the second pest control spraying agent in the dormancy stage;
in the dormant period, spraying lime sulfur mixture once after leaves fall and before sprouts to whiten the trunk.
The first spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: nimbin 0.08%, bamboo leaf flavone 0.003%, BT emulsion 0.03%, ferrous sulfate 0.2%, and water for the rest. The preparation method comprises the following steps: dispersing nimbin, bamboo leaf flavone, BT emulsion and ferrous sulfate in water in certain proportion and stirring to obtain the first pesticide for preventing and treating diseases and pests.
The second spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: allicin 0.2%, nimbin 0.05%, lime 0.03%, urea 0.05% and water for the rest. The preparation method comprises the following steps: and dispersing allicin, nimbin, lime and urea in water according to a formula ratio, and uniformly stirring to obtain a second pesticide for preventing and treating plant diseases and insect pests.
Example 2:
a pollution-free control method for diseases and pests of apple trees comprises the following steps:
(1) selecting plots with fertile soil and good drainage for apple planting, and thoroughly removing various weeds in the plots before planting; arranging ridges during soil preparation, planting apple trees on the ridges, reserving planting belts with the width of 20-25cm at two sides of the ridges for planting alfalfa, cutting the alfalfa on the spot after the alfalfa grows, and burying the alfalfa in soil; when the orchard is fertilized, the inorganic fertilizer and the organic fertilizer are mixed for fertilization, the organic fertilizer is thoroughly decomposed and subjected to harmless treatment; timely mowing weeds in the orchard, flatly paving the mowed weeds on ridges for planting apple trees, and removing weeds parasitized by larvae; pruning apple trees every year, and timely pruning apple tree leaves infected with diseases and insect pests;
in order to prevent incomplete pest killing, the trunk can be bound with a straw handle before overwintering, the straw handle can induce and collect the residual larvae in the straw handle to cocoon for overwintering, and the straw handle is taken off in early spring and burnt.
(2) After the apple trees are planted, spraying a first pest control spraying agent every 12 days in a non-dormancy stage on crowns, and not spraying the first pest control spraying agent in a dormancy stage; spraying a second pest control spraying agent every 12 days in a non-dormancy stage on the tree trunks and soil below the tree crowns, and not spraying the second pest control spraying agent in the dormancy stage;
in the dormant period, spraying lime sulfur mixture once after leaves fall and before sprouts to whiten the trunk.
The first spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: nimbin 0.05%, bamboo leaf flavone 0.002%, BT emulsion 0.03%, ferrous sulfate 0.2%, and water for the rest. The preparation method is the same as example 1.
The second spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: allicin 0.3%, nimbin 0.05%, lime 0.02%, urea 0.06% and water for the rest. The preparation method is the same as example 1.
Example 3:
a pollution-free control method for diseases and pests of apple trees comprises the following steps:
(1) selecting plots with fertile soil and good drainage for apple planting, and thoroughly removing various weeds in the plots before planting; arranging ridges during soil preparation, planting apple trees on the ridges, reserving planting belts with the width of 20-25cm at two sides of the ridges for planting alfalfa, cutting the alfalfa on the spot after the alfalfa grows, and burying the alfalfa in soil; when the orchard is fertilized, the inorganic fertilizer and the organic fertilizer are mixed for fertilization, the organic fertilizer is thoroughly decomposed and subjected to harmless treatment; timely mowing weeds in the orchard, flatly paving the mowed weeds on ridges for planting apple trees, and removing weeds parasitized by larvae; pruning apple trees every year, and timely pruning apple tree leaves infected with diseases and insect pests;
in order to prevent incomplete pest killing, the trunk can be bound with a straw handle before overwintering, the straw handle can induce and collect the residual larvae in the straw handle to cocoon for overwintering, and the straw handle is taken off in early spring and burnt.
(2) After the apple trees are planted, spraying a first pest control spraying agent every 16 days in a non-dormancy stage on crowns, and not spraying the first pest control spraying agent in a dormancy stage; spraying a second pest control spraying agent every 10 days in a non-dormancy stage on the tree trunks and soil below the tree crowns, and not spraying the second pest control spraying agent in the dormancy stage;
in the dormant period, spraying lime sulfur mixture once after leaves fall and before sprouts to whiten the trunk;
the first spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: nimbin 0.1%, bamboo leaf flavone 0.003%, BT emulsion 0.02%, ferrous sulfate 0.3%, and water for the rest. The preparation method is the same as example 1.
The second spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: allicin 0.1%, nimbin 0.03%, lime 0.05%, urea 0.05% and water for the rest. The preparation method is the same as example 1.
Example 4:
a pollution-free control method for diseases and pests of apple trees comprises the following steps:
(1) selecting plots with fertile soil and good drainage for apple planting, and thoroughly removing various weeds in the plots before planting; arranging ridges during soil preparation, planting apple trees on the ridges, reserving planting belts with the width of 20-25cm at two sides of the ridges for planting alfalfa, cutting the alfalfa on the spot after the alfalfa grows, and burying the alfalfa in soil; when the orchard is fertilized, the inorganic fertilizer and the organic fertilizer are mixed for fertilization, the organic fertilizer is thoroughly decomposed and subjected to harmless treatment; timely mowing weeds in the orchard, flatly paving the mowed weeds on ridges for planting apple trees, and removing weeds parasitized by larvae; pruning apple trees every year, and timely pruning apple tree leaves infected with diseases and insect pests;
in order to prevent incomplete pest killing, the trunk can be bound with a straw handle before overwintering, the straw handle can induce and collect the residual larvae in the straw handle to cocoon for overwintering, and the straw handle is taken off in early spring and burnt.
(2) After the apple trees are planted, spraying a first pest control spraying agent every 15 days in a non-dormancy stage on crowns, and not spraying the first pest control spraying agent in a dormancy stage; spraying a second pest control spraying agent every 13 days in a non-dormancy stage on the tree trunks and soil below the tree crowns, and not spraying the second pest control spraying agent in a dormancy stage;
in the dormant period, spraying lime sulfur mixture once after leaves fall and before sprouts to whiten the trunk.
The first spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: nimbin 0.08%, bamboo leaf flavone 0.005%, BT emulsion 0.05%, ferrous sulfate 0.1%, and water for the rest. The preparation method is the same as example 1.
The second spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: allicin 0.2%, nimbin 0.08%, lime 0.03%, urea 0.03%, and water in balance. The preparation method is the same as example 1.
Example 5:
the apple tree pest pollution-free control method is different from the embodiment 1 in that:
the first spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: nimbin 0.06%, bamboo leaf flavone 0.004%, BT emulsion 0.03%, ferrous sulfate 0.2%, and water for the rest.
The second spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: allicin 0.15%, nimbin 0.07%, lime 0.05%, urea 0.05% and water for the rest.
The remaining steps were identical to those of example 1.
Planting experiment:
in a certain apple planting base in Shandong province, one apple planting area is divided into five test areas (test areas 1-5) with approximately the same area, and the test areas 1-5 are used for apple tree planting and pest control according to the corresponding methods in the embodiments 1-5 of the invention respectively. Then the average incidence of apple tree canker and powdery mildew in three years is counted. Specific results are shown in table 1.
Table 1:
| incidence of rot disease | Incidence of powdery mildew | |
| Test zone 1 | 2.2％ | 2.8％ |
| Test zone 2 | 2.3％ | 3.0％ |
| Test zone 3 | 2.6％ | 3.5％ |
| Test zone 4 | 2.9％ | 3.5％ |
| Test zone 5 | 3.0％ | 3.8％ |
As can be seen from Table 1, the disease incidence of rottenness and powdery mildew of apple trees can be controlled within a very low range by the pollution-free control method of apple trees of examples 1 to 5 of the present invention.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A disease and pest pollution-free control method for apple trees is characterized by comprising the following steps:
(1) selecting plots with fertile soil and good drainage for apple planting, and thoroughly removing various weeds in the plots before planting; arranging ridges during soil preparation, planting apple trees on the ridges, and reserving planting belts with the width of 20-25cm at the two sides of the ridges for planting alfalfa; when the orchard is fertilized, the inorganic fertilizer and the organic fertilizer are mixed for fertilization, the organic fertilizer is thoroughly decomposed and subjected to harmless treatment; timely mowing weeds in the orchard, flatly paving the mowed weeds on ridges for planting apple trees, and removing weeds parasitized by larvae; pruning apple trees every year, and timely pruning apple tree leaves infected with diseases and insect pests;
(2) after the apple trees are planted, spraying a first pest control spraying agent every 12-16 days in a non-dormancy stage on crowns, and not spraying the first pest control spraying agent in a dormancy stage; spraying a second pest control spraying agent every 10-13 days in a non-dormancy stage for the tree trunks and soil below the tree crowns, and not spraying the second pest control spraying agent in a dormancy stage;
in the dormant period, spraying lime sulfur mixture once after leaves fall and before sprouts to whiten the trunk;
the first spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: 0.05-0.1% of azadirachtin, 0.002-0.005% of bamboo leaf flavone, 0.02-0.05% of BT emulsion, 0.1-0.3% of ferrous sulfate and the balance of water;
the second spraying agent for preventing and treating plant diseases and insect pests is prepared from the following components in percentage by weight: 0.1 to 0.3 percent of allicin, 0.03 to 0.08 percent of azadirachtin, 0.02 to 0.05 percent of lime, 0.03 to 0.06 percent of urea and the balance of water.
2. The method for pollution-free control of diseases and pests of apple trees according to claim 1, wherein alfalfa is mown on site after growing and buried in soil.
3. The method of claim 1, wherein a stem is tied with a straw before overwintering, and the remaining larvae are induced to cocoon in the straw for overwintering, and are taken off in early spring and burnt.
4. The apple tree pest-control pollution-free control method according to claim 1, wherein the pest control spraying agent is prepared from the following components in percentage by weight: nimbin 0.08%, bamboo leaf flavone 0.003%, BT emulsion 0.03%, ferrous sulfate 0.2%, and water for the rest.
5. The apple tree pest-control pollution-free control method according to claim 1, wherein the pest control spraying agent is prepared from the following components in percentage by weight: nimbin 0.05%, bamboo leaf flavone 0.002%, BT emulsion 0.03%, ferrous sulfate 0.2%, and water for the rest.
6. The apple tree pest-control pollution-free control method according to claim 1, wherein the pest control spraying agent II is prepared from the following components in percentage by weight: allicin 0.2%, nimbin 0.05%, lime 0.03%, urea 0.05% and water for the rest.
7. The apple tree pest-control pollution-free control method according to claim 1, wherein the pest control spraying agent II is prepared from the following components in percentage by weight: allicin 0.3%, nimbin 0.05%, lime 0.02%, urea 0.06% and water for the rest.
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