CN112586266B - Pesticide application-reducing and efficiency-increasing method suitable for vineyard - Google Patents
Pesticide application-reducing and efficiency-increasing method suitable for vineyard Download PDFInfo
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- CN112586266B CN112586266B CN202011505029.7A CN202011505029A CN112586266B CN 112586266 B CN112586266 B CN 112586266B CN 202011505029 A CN202011505029 A CN 202011505029A CN 112586266 B CN112586266 B CN 112586266B
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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
- A01G17/02—Cultivation of hops or vines
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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
- A01G22/20—Cereals
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention discloses a pesticide application-reducing and efficiency-increasing method suitable for vineyards. The invention uses the intercropping barley in autumn and winter to trap overwintering pests, and the population quantity of the pests such as leafhoppers, aphids and the like can be effectively reduced by carrying out centralized prevention and control once in spring next year, so that the number of the pest population is reduced; in the growing season of the grapes, biological agents and chemical agents are utilized to carry out combined synergistic prevention and control in the key period of prevention and control of the grape diseases and insect pests, partial replacement of the chemical agents is realized on the basis of guaranteeing the prevention and control effect, 34.8-41.6% of chemical pesticide application reduction is realized, and meanwhile the risk of exceeding the standard of pesticide residues of the grape fruits is effectively reduced.
Description
Technical Field
The invention belongs to the technical field of plant disease and pest control, and particularly relates to a pesticide application-reducing and efficiency-increasing method suitable for a vineyard.
Background
Grape (grape vinifera L.) is a woody vine plant of Vitaceae, contains abundant sugar, vitamins and minerals, and has thin and thick fruit skin, sweet and succulent taste, so that the grape is deeply favored by people and is widely planted in all parts of the world. Because of the high economic benefit of the water treatment agent, in recent years, rapid development has been achieved in most areas of south provinces (cities) such as Hubei, hunan, jiangxi, anhui, jiangsu, shanghai and the like in China. The south producing area belongs to subtropical zone and tropical season wind moist climates, and the summer is high temperature and wet, and the rain and heat are the same in season, belonging to grape unsuitable or suboptimal areas, and the production is mostly in a facility cultivation mode.
The special climatic conditions in the southern cultivation area cause that the grape is easy to be damaged by various diseases and insect pests in growing season, such as gray mold, anthracnose, downy mildew, powdery mildew, anthracnose, brown spot, grape canker, green plant bug, leafhoppers, aphids, thrips, chafer, wax hoppers and other diseases and insect pests happen all the year round. In the control of grape diseases and insect pests, various chemical pesticides are applied during the control process. At present, the number of pesticide application times in the southern vineyard reaches 8-10 times, and the number of pesticide application times in partial orchards reaches even 15 times. The long-term use of chemical agents has a certain promotion effect on the development of the grape industry in the south, but also causes a plurality of negative problems of death of natural enemy insects in vineyards, increase of the frequency of drug resistance caused by diseases and insect pests, damage to the ecological environment of the orchards, exceeding of pesticide residues, environmental pollution and the like.
A set of green prevention and control technology system for grape diseases and insect pests is established to reduce the use times and the input amount of pesticides, save the cost and increase the benefit of fruit farmers, and is a trend of comprehensive prevention and control of grape diseases and insect pests in the future.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a pesticide application-reducing and efficiency-increasing method suitable for a vineyard of a south facility, which reduces the use frequency of pesticides, controls the harm of pests and pesticide residues, and achieves the purposes of reducing, controlling the pests, saving the cost and increasing the efficiency.
According to the field epidemic characteristics of grape diseases and insect pests in south facilities, the inventor invents a method for cooperatively preventing and controlling orchard grasses, biological agents and chemical agents in the grape diseases and insect pests prevention and control process, so that the application amount of chemical pesticides can be effectively reduced, the risk of exceeding the standard of pesticide residues is reduced, the generation of drug resistance is avoided, and the healthy production of grapes is effectively promoted.
The method for reducing application and enhancing the efficiency of pesticides in vineyards with south facilities comprises the steps of attracting overwintering pests by grasses in autumn and winter orchards, and performing medicament prevention and control in spring next year to reduce the number of insect population and reduce later prevention and control pressure; in the growing season of the grapes, the biological agent and the chemical agent are utilized to carry out combined synergistic prevention and control in the key period of prevention and control of the grape diseases and insect pests, and partial replacement of the chemical agent is realized on the basis of ensuring the prevention and control effect, so that the application amount of chemical pesticide is reduced, and the prevention and control efficiency is improved.
The invention discloses a pesticide application-reducing and efficiency-increasing method suitable for a vineyard, which comprises the following steps of:
a. sowing barley into vineyard in middle and late 9 months;
b. spraying thiamethoxam on barley and grape branches for one time in the middle and upper 3 months of the next year, then mowing the barley on the ground, and covering a grape vine tray with the mowed barley;
c. when more than 80% of grape tips in the vineyard have 2-4 leaves spread, polyoxin is sprayed once;
d. when more than 90% of inflorescences in the vineyard are in an inflorescence separation state, spirotetramat and iprodione are sprayed once;
e. when 1% -5% of flower buds are opened on grape inflorescences, spraying Shi Mu mould once;
f. spraying fludioxonil, flusilazole and thiamethoxam once 2-3 days after more than 80% of grape inflorescences in the vineyard are fallen flowers;
g. spraying boscalid and difenoconazole once 2-3 days before bagging the grape ears.
Preferably, the sowing of the barley into the vineyard of step a is specifically: adopts a shallow ditch drill sowing mode, and each planting belt is sown with 2-3 strips, the width between the strips is 30cm, the sowing depth is 1-2cm, and the sowing quantity of grass seeds is 2.5-3kg/667m 2 。
Preferably, the thiamethoxam spraying in the step b is to spray 25% thiamethoxam water dispersible granules (reaching crop protection Co., ltd.) in front of Switzerland for 4 g/mu.
Preferably, the spraying polyoxin in the step c is spraying 10% polyoxin wettable powder (Japanese scientific research Co., ltd.) with a weight of 110 g/mu.
Preferably, the spirotetramat and iprodione spraying in the step d is spraying 22.4% spirotetramat suspending agent (Bayer crop science, national company) 15 ml/mu and 50% iprodione wettable powder (Jiangxi He Yi chemical Co., ltd.) 75 g/mu.
Preferably, the spraying Shi Mu mould in the step e is applied at an amount of 200 g/mu of 2 hundred million spores/g of trichoderma wettable powder (Shanghai Mo Lihua Biotechnology Co., ltd.).
Preferably, the fludioxonil, the flusilazole and the thiamethoxam in the step f are sprayed with 20 ml/mu of 40% fludioxonil suspending agent (Shanxi North China green biotechnology Co., ltd.), 7 ml/mu of 40% flusilazole emulsifiable concentrate (Jiangsu Jian agricultural plant protection Co., ltd.) and 4 g/mu of 25% thiamethoxam water dispersible granule (Switzerland front reaching crop protection Co., ltd.).
Preferably, the boscalid and difenoconazole sprayed in the step g are sprayed with 50% boscalid water dispersible granule (Basfu corporation) of 75 g/mu and 10% difenoconazole suspending agent (Switzerland front reaches crop protection Co., ltd.) of 50 ml/mu.
In the method, thiamethoxam is sprayed in the step b for one time so as to kill overwintering pests and reduce the number of insect population; covering a grape vine tray with cut barley, and improving the organic matter content of soil and the soil fertility after the barley is rotten; in the step c, when more than 80% of grape tips in the vineyard have 2-4 leaves already unfolded, the 2 nd medicament prevention and control key node is adopted; in the step d, when more than 90% of inflorescences in the vineyard are in an inflorescence separation state, the 3 rd medicament prevention and control are carried out; in the step e, when 1% -5% of flower buds are opened on grape inflorescences, the 4 th prevention and control critical period is adopted; 2-3 days after 80% of grape inflorescences in the vineyard fall flowers in the step f are 5 th prevention and control critical periods; 2-3 days before bagging the grape ears in the step g are the 6 th prevention and control critical period.
The key of the method is that in the steps a, b, c, e, f and g, grape pests are attracted to the barley planted in a wrong season for overwintering through the step a; b, performing centralized prevention and control on the trapped pests for the first time, reducing the number of pest mouths of overwintering pests, and relieving later prevention and control pressure; through the step c, pathogenic bacteria of diseases such as grape gray mold, anthracnose, powdery mildew and the like of overwintering in the field can be effectively eliminated or reduced; through the step e, trichoderma quickly colonizes on the surface of the grape inflorescence and induces plants to generate resistance, and secondary metabolites can effectively inhibit the growth of botrytis cinerea, so that the method has double effects of treatment and protection on the grape inflorescence. Through the step f, gray mold, black spot, lygus lucorum, thrips and the like which are high in the grape in the south facility are prevented and controlled in a targeted manner; and (g) preventing the damage of gray mold and anthracnose after bagging the grapes.
Compared with the prior art, the invention has the following advantages and effects:
(1) Centralized prevention and control of overwintering pests trapped in the barley can obviously reduce the number of insect mouths of the orchard, achieve the effect of doubling the effort, and can also improve the organic matter content of soil and the soil fertility after the barley after mowing is rotten and returned to the field.
(2) Through the combined prevention and control of 2 secondary biological agents and 4 chemical agents, the application times are reduced by 2-4 times per year compared with the conventional orchard (8-10 times per year) under the condition of ensuring the prevention and control effect, so that the partial replacement of the chemical agents is realized, and the application of chemical pesticides is reduced by 34.8% -41.6%.
(3) Through alternate application of biological agents and chemical agents, the generation of drug resistance is effectively avoided, and the risk of exceeding the standard of pesticide residues on fruits is reduced.
(4) The operation scheme is simple and convenient, is convenient to popularize and has important application value.
Drawings
FIG. 1 shows the growth conditions of barley in vineyard at different periods (left: the growth state of barley in autumn when grape leaves fall; middle: the field growth state of barley after winter leaves fall; right: the state after early spring agent prevention and control and mowing);
FIG. 2 shows the field growth status of the grapes at the 2 nd medication;
FIG. 3 shows the field growth status of the grapes at the time of medication 3;
FIG. 4 shows the field growth status of the grapes at the time of the 4 th medication;
FIG. 5 shows the field growth status of the grapes at the 5 th medication;
FIG. 6 shows the field growth of grapes at 6 doses.
Detailed Description
The following examples are further illustrative of the invention and are not intended to be limiting thereof.
The experimental methods in the following examples are conventional methods unless otherwise specified. The quantitative experiments in the following experimental examples were all set up with three replicates and the results averaged.
Example 1
1. Prevention and control effect of autumn and winter grasses on vineyard pests
After harvesting the grapes in the south area, the winter period is long, the temperature is high, and the illumination is sufficient. Barley (Hordeum vulgare L.) is selected as a test grass seed for sowing, natural grass is used as a control, the prevention and control effect of overwintering pests in a grass garden is studied, and the influence of the grass in the garden on the pesticide application reduction and the soil improvement of the garden is explored.
1.1 materials and methods
Experiments were carried out in 2017-2019 in the river Xia Oujin sluice vineyard in Wuhan City of Hubei province, with flat park, medium soil fertility. The age of the 'summer black' grape is 5 years, the plant-row spacing is 1.5m multiplied by 2.5m, and the cultivation management is carried out according to the conventional method, so that the levels are consistent.
1.2 test treatments
In the middle of 9 th 2017, sowing barley into vineyard by shallow sowing in combination with autumn ploughing, wherein each planting belt is used for sowing 2-3 strips, the width between the strips is 30cm, the sowing depth is 1-2cm, and the sowing amount of grass seeds is 2.5-3kg/667m 2 . The natural grass growing area is used as a control. Survey and recording of barley grass growing area by adopting insect catching plateThe species and the number of grape pests in the natural grass growing area.
The total 2 treatments are set in the medicament prevention and control experiment of the grass growing area: (1) 25% thiamethoxam water dispersible granule (swiss zhengda crop protection limited) 4 g/mu (control area), (2) clear water control (control area). Each treatment was repeated 3 times, 20m per cell area 2 A total of 6 cells, randomly arranged.
1.3 investigation and determination
In the middle 3 days of 2018, concentrated chemical prevention and control is carried out on the grass growing area, the prevention and control effect is investigated after 7 days, and the prevention and control effect is calculated according to the following formula.
The calculation formula is as follows:
rate of reduction of insect population (%) = [ (number of live insects before medication-number of live insects after medication)/number of live insects before medication ] ×100%
Control effect (%) = [ (rate of reduction in insect population of treated group-rate of reduction in insect population of control group)/(rate of reduction in insect population of 100-control group) ], 100%1.4 results analysis
The investigation result shows that the trapping amount of the barley grass growing area planted in the wrong season to the grape pests is 474 per board, which is obviously higher than that of the natural grass growing area (63 per board). The leaf hoppers account for more than 60 percent of the barley grass growing area or the natural grass growing area; secondly, the proportion of aphids in the barley grass-growing area and the natural grass-growing area is 31.6 percent and 23.8 percent respectively, which shows that the two pests are main pests occurring in early spring of a local vineyard (table 1).
TABLE 1 trapping amount of grape pests in different treatment areas
In order to control the two main pests, the embodiment adopts the water dispersible granule of 25% thiamethoxam (the company of crop protection Co., ltd. In the Switzerland) for controlling the pesticide once in 4 g/mu, and the investigation result after 7 days shows that the control effect of thiamethoxam on leafhoppers and aphids is over 95 percent (table 2).
TABLE 2 control effect of thiamethoxam on main pests of grape trapped on barley
After the chemical prevention and control in the middle 3 days of 2018, the grass mower is used for mowing the ground once, and the tree plate is covered.
In 8 months 2019, samples were taken from the soil surface layers (0 to 20 cm) of different weed growing areas, and soil nutrient elements were measured. The soil nutrient measurement results show that the contents of soil organic matters, alkaline hydrolysis nitrogen, quick-acting phosphorus and quick-acting potassium in the barley grass growing area are obviously higher than those in the natural grass growing area of the control group (table 3).
TABLE 3 determination of soil nutrient elements for different test areas
Therefore, the barley used in the middle of the autumn vineyard has good trapping effect on grape pests such as leafhoppers, aphids and the like, and the pest population base number of overwintering pests can be obviously reduced by performing chemical prevention and control once in the early spring of the next year, so that the prevention and control pressure of later-period orchard pests is reduced; the grass seeds after mowing cover the tree plates, so that the organic matter content of soil can be effectively improved, the orchard environment is improved, and the soil fertility is improved, thereby realizing the effects of grass control, garden cultivation by grass and soil quality improvement.
Example 2
2. Orchard grass growing and chemical pesticide substitution technology for preventing and controlling grape diseases and insect pests
2.1 materials and methods
The test is carried out in a river Xia Oujin sluice vineyard in Wuhan City of Hubei province, the garden is flat, and the soil fertility is moderate. The tree age of the 'sunshine rose' grape is 5 years, the plant row spacing is 1.5m multiplied by 2.5m, and the cultivation management is carried out according to the conventional method, so that the levels are consistent.
2.2 design of experiments
2.2.1 conventional prevention and control mode (as a comparison):
(1) Spraying 250 g/mu of 45% lime sulfur crystals (Hebei Shuangji chemical Co., ltd.) in the germination period of the grapes;
(2) Spraying 10% high-efficiency cypermethrin aqueous emulsion (Shenzhen Nop Xin Agrochemical Co., ltd.) at leaf spreading period, wherein 10 ml/mu+12.5% diniconazole wettable powder (Jiangsu Jian brand Agrochemical Co., ltd.) is 25 g/mu;
(3) The preparation is applied three times in the flowering period, wherein 10 ml/mu of 10% flusilazole emulsifiable concentrate (Jiangsu Jian agricultural plant protection Co., ltd.) and 10% nitenpyram aqua (Shandong Jining City access chemical plant) are applied to 15 ml/mu, 75 g/mu of 50% procymidone wettable powder (Sumitomo chemical Co., ltd.), 20 ml/mu of 10% bifenthrin aqueous emulsion (Jiangsu Jian brand agricultural chemical Co., ltd.) and 30 ml/mu of 10% difenoconazole suspending agent (Switzerland forward crop protection Co., ltd.) are applied to the first time, and 50 ml/mu of 5% high chlorine emamectin benzoate microemulsion (Shenzhennong agricultural chemical Co., ltd.) are applied to the third time;
(4) Before bagging, 10% difenoconazole suspending agent (Switzerland is reaching crop protection Co., ltd.) 50 ml/mu, 20% imazalil aqueous emulsion (Jiangxi He Yi chemical Co., ltd.) 60 ml/mu;
(5) After bagging and before color conversion, 95 g/mu of 80% mancozeb wettable powder (reaching crop protection Co., ltd.);
(6) During the color transfer period, 50 ml/mu of 25% azoxystrobin suspending agent (Shenzhennuo Xin Cheng Co., ltd.) and 20 ml/mu of 10% bifenthrin aqueous emulsion (Jiangsu Jiang Gong Cheng Co., ltd.);
(7) After color conversion, 50% Pythium species wettable powder (Sumitomo chemical Co., ltd.) 75 g/mu and 50% thiophanate-methyl suspension (Shanghai, torula biological products Co., ltd.) 75 ml/mu.
2.2.2 reduced application mode of this embodiment:
(1) Sowing barley into vineyard in shallow-ditch drill mode in middle and late 9 months, sowing 2-3 plants per plant belt, with width between the plants of 30cm, sowing depth of 1-2cm, and grass seed sowing amount of 2.8kg/667m 2 (FIG. 1);
(2) In the middle of 3 months in the next year, 25% thiamethoxam water dispersible granule (reaching crop protection Co., ltd.) of 4 g/mu is sprayed once on barley and grape branches on the cultivation belt to kill overwintering pests and reduce the number of pest population. Then mowing the ground once by a mower, and covering a tree tray (figure 1);
(3) When more than 80% of grape tips in the vineyard have 2-4 leaves spread (figure 2), 10% polyoxin wettable powder (Japanese scientific research Co., ltd.) is sprayed once in the whole vineyard for 110 g/mu;
(4) When more than 90% of inflorescences in the vineyard are in an inflorescence separation state (figure 3), spraying 15 ml/mu of 22.4% spirotetramat suspending agent (Bayer crop science Chinese Co., ltd.) and 75 g/mu of 50% iprodione wettable powder (Jiangxi He Yi chemical Co., ltd.) once;
(5) When 1% -5% of flower buds are opened on grape inflorescences (figure 4), spraying Shi Mu mould (2 hundred megaspores/gram) wettable powder (Shanghai Mo Lihua Biotechnology Co., ltd.) 200 g/mu;
(6) 2-3 days after more than 80% of grape inflorescences in the vineyard fall flowers (figure 5), spraying chemical agent once: 20 ml/mu of 40% fludioxonil suspension (Shanxi nonghua green biotechnology Co., ltd.), 7 ml/mu of 40% flusilazole emulsifiable concentrate (Jiangsu Jian agricultural plant protection Co., ltd.), and 4 g/mu of 25% thiamethoxam water dispersible granule (Russian Xiangzhida crop protection Co., ltd.);
(7) 2-3 days before bagging grape ears (figure 6), 50% boscalid water dispersible granule (Basfu corporation) 75 g/mu and 10% difenoconazole suspending agent (Switzerland front reaches crop protection Co., ltd.) 50 ml/mu are sprayed once.
In 2018-2019, the treatment test is carried out in the river Xia Oujin water gate vineyard of Wuhan City, hubei province, and each treatment test area is 3 mu land. Before fruit harvesting, the occurrence of diseases and insect pests on the 'sunshine rose' grape leaves and fruits is investigated by adopting a conventional disease and insect pest investigation method, and the prevention and control effect is calculated.
Test results show that the control effect of the application reducing mode of the embodiment on three main grape pests including leafhoppers, aphids and lygus lucorum is obviously higher than that of the conventional control mode, and the control effect on gray mold, anthracnose and acid rot is equivalent to that of the conventional control mode (table 4). On the premise of ensuring the prevention and control effect, the application-reducing mode of the embodiment only needs to be used for 6 times a year, the annual average application amount is 0.56 kg (or liter)/mu, which is far lower than that of the conventional prevention and control mode (9 times, the annual average application amount is 0.91 kg (or liter)/mu), the pesticide application is reduced by 38.5%, and the prevention and control cost of the vineyard is effectively reduced. The application reduction mode of the embodiment realizes the cooperative prevention and control of main diseases and insect pests of the grape by alternately applying the biological agent and the chemical agent, reduces the probability of drug resistance of the agent and improves the prevention and control efficiency of the pesticide.
TABLE 4 comparison of control effects of different control modes on Main diseases and pests of grape
Claims (8)
1. A method for reducing application and enhancing efficiency of pesticides suitable for vineyards, which is characterized by comprising the following steps:
a. sowing barley into vineyard in middle and late 9 months;
b. spraying thiamethoxam on barley and grape branches for one time in the middle and upper 3 months of the next year, then mowing the barley on the ground, and covering a grape vine tray with the mowed barley;
c. when more than 80% of grape tips in the vineyard have 2-4 leaves spread, polyoxin is sprayed once;
d. when more than 90% of inflorescences in the vineyard are in an inflorescence separation state, spirotetramat and iprodione are sprayed once;
e. when 1% -5% of flower buds are opened on grape inflorescences, spraying Shi Mu mould once;
f. spraying fludioxonil, flusilazole and thiamethoxam once 2-3 days after more than 80% of grape inflorescences in the vineyard are fallen flowers;
g. spraying boscalid and difenoconazole once 2-3 days before bagging the grape ears.
2. The method according to claim 1, wherein the sowing of barley into the vineyard of step a is specifically: 2-3 strips are sown in each planting belt in a shallow ditch drill sowing mode, the width between the strips is 30cm, the sowing depth is 1-2cm, and the sowing amount of grass seeds is 2.5-3kg/667m 2 。
3. The method according to claim 1, wherein the thiamethoxam spraying in the step b is performed by spraying 25% thiamethoxam water dispersible granules 4 g/mu.
4. The method of claim 1, wherein said spraying polyoxin in step c is spraying 10% polyoxin wettable powder at 110 g/mu.
5. The method according to claim 1, wherein the spirotetramat and iprodione spraying in the step d is performed by spraying 15 ml/mu of 22.4% spirotetramat suspending agent and 75 g/mu of 50% iprodione wettable powder.
6. The method of claim 1, wherein the spraying Shi Mu mold in step e is applied at a rate of 200 g/mu of 2 hundred megaspores/g of trichoderma wettable powder.
7. The method according to claim 1, wherein the spraying of fludioxonil, flusilazole and thiamethoxam in step f is performed by spraying 40% fludioxonil suspension at 20 ml/mu, 40% flusilazole emulsifiable concentrate at 7 ml/mu and 25% thiamethoxam water dispersible granule at 4 g/mu.
8. The method according to claim 1, wherein the spraying of boscalid and difenoconazole in the step g is 50 ml/mu of 50% boscalid water dispersible granule and 10% difenoconazole suspending agent.
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