CN108207977B - Composition for preventing and treating climatic spots as well as preparation and application thereof - Google Patents
Composition for preventing and treating climatic spots as well as preparation and application thereof Download PDFInfo
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- CN108207977B CN108207977B CN201611192547.1A CN201611192547A CN108207977B CN 108207977 B CN108207977 B CN 108207977B CN 201611192547 A CN201611192547 A CN 201611192547A CN 108207977 B CN108207977 B CN 108207977B
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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
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
- A01N47/12—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing a —O—CO—N< group, or a thio analogue thereof, neither directly attached to a ring nor the nitrogen atom being a member of a heterocyclic ring
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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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- 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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/50—1,3-Diazoles; Hydrogenated 1,3-diazoles
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Abstract
The invention provides a composition for controlling climatic spots, which comprises the following components: ethylene urea and polyoxin. The composition for preventing and treating the climate spots can effectively prevent the occurrence of the climate spots of field tobacco, inhibit the morbidity of the climate spots of the tobacco, avoid the adverse effects of ozone in the air on chlorophyll-rich plant tissues such as the tobacco and the like, such as the generation of point marks, spots or spots on leaf tips, the damage of chloroplasts and the like, and further ensure the tobacco quality in the tobacco planting process. And simultaneously, other tobacco bacterial diseases caused by climate spots are prevented and treated.
Description
Technical Field
The invention relates to the technical field of pesticides, and particularly relates to a composition for preventing and treating climate spots, and a preparation and application thereof.
Background
Tobacco is an important economic crop in China, and the tobacco industry belongs to the industry with huge income in China and pays huge amount of tax money for the country every year. Along with the improvement of the living standard of people, the quality demand of the cigarette industry for raw materials is continuously improved. The high-quality raw materials require the external quality and the internal quality of the flue-cured tobacco leaves to be coordinated and unified so as to be convenient for industrial processing and use.
Along with the increasing environmental pollution, the air pollution and the ozone emission are increasing. Ozone is a strong oxidant, can stimulate plant respiration, and can inhibit photosynthesis, and when the air hole is opened, the ozone can be passed through the air hole and fed into air cavity, and can produce toxic hazard to make plant leaf necrosis, fall-off, long-floating white spot and growth be inhibited so as to reduce yield of crops. Tobacco is a plant which is very sensitive to air pollution, and tobacco climate spots are mainly caused by that when the concentration of ozone in air reaches 0.03-0.05mg/kg, the ozone can have adverse effects on chlorophyll-rich plant tissues such as tobacco and the like, so that spots, spots or spots are generated on the leaf tips, and then chloroplasts are damaged. Ozone concentration is therefore a major factor in the development of climatic plaques. Tobacco climatic spot disease is seriously damaged in most tobacco areas in China, particularly in mountain tobacco areas, and becomes a new disease which cannot be ignored. The climate spots cause the leaf tips to generate the spots, the spots or the spots, which not only affect the judgment of the purchasing grade of the flue-cured tobacco and reduce the income of tobacco growers, but also cause the change of the internal chemical components of the flue-cured tobacco, and cause the non-uniformity of the appearance quality and the internal quality of the flue-cured tobacco, thereby affecting the reasonable use of the raw materials by the cigarette industry.
At present, the research on the preventing and treating agent for the climate spots is still very little, and Longyou Hua of Bijie company of Zhengzhou tobacco institute Wang and Guizhou tobacco company has developed the preventing and treating agent for the climate spots of the tobacco and the resistance inducing agent for the climate spots of the tobacco, but all have the defects of production practice, complex manufacture, complex formula and unobvious preventing and treating effect.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a composition for preventing and treating climate spots, and a preparation and an application thereof, wherein the prepared composition for preventing and treating climate spots has a good effect of preventing and treating the climate spots of tobacco.
The invention provides a composition for controlling climatic spots, which comprises the following components: ethylene urea and polyoxins
In certain embodiments of the invention, the mass ratio of ethylene urea to polyoxin is 1: (0.1 to 10); in some other embodiments of the present invention, the mass ratio of ethylene urea to polyoxin is 1: (1-3); in other embodiments of the invention, the mass ratio of ethylene urea to polyoxin is specifically 1:1.3 or 1: 1.5.
In certain embodiments of the present invention, the weathering spot control composition further comprises tween.
The Tween serving as an oil-in-water emulsion can enable the ethylene urea and the polyoxin to be uniformly dispersed in the solution, so that the bacteriostatic activity of the composition for preventing and treating the climatic spots is further improved.
The mass ratio of the tween to the ethylene urea is (0.01-0.1): 1. in other embodiments of the present invention, the mass ratio of tween to ethyleneurea is (0.03-0.06): 1; in other embodiments of the invention, the mass ratio of ethylene urea to polyoxin is specifically 0.04:1 or 0.05: 1.
In certain embodiments of the present invention, the weather stain control composition further comprises water. Namely, the weather stain control composition is an aqueous solution. Wherein the concentration of the ethylene urea is preferably 1.5-15 g/L, more preferably 1.5-9 g/L, more preferably 3-6 g/L, and in some embodiments of the present invention, the concentration of the ethylene urea is 9g/L, 4.5g/L, or 3 g/L.
The concentration of the polyoxin is 1.5-15 g/L, preferably 3-12 g/L, more preferably 4.5-9 g/L, and in some embodiments of the invention, the concentration of the polyoxin is 12g/L, 6g/L, or 4.5 g/L.
The concentration of tween is 0.1-0.5 g/L, preferably 0.1-0.4 g/L, more preferably 0.15-0.2 g/L, in some embodiments of the invention, the concentration of tween is 0.4g/L, 0.2g/L or 0.15 g/L.
As the best embodiment of the invention, the concentration of the ethylene urea is 4.5g/L, the concentration of the polyoxin is 6g/L, and the concentration of the Tween is 0.2 g/L.
The aqueous solution of the climate spot control composition prepared according to the proportion not only can ensure that all raw materials are dispersed most uniformly in the preparation process, but also has the optimal control effect, can avoid the retransmission of infected tobacco, can also effectively form a compact oxide film layer on the surface of tobacco leaves, and effectively prevents the new occurrence of climate spots of flue-cured tobacco.
The method for preparing the above-mentioned composition for controlling climate spots is not particularly limited, and may be a method well known to those skilled in the art, and in some embodiments of the present invention, the above-mentioned aqueous solution of the composition for controlling climate spots is prepared according to the following method:
A) mixing an ethylene urea aqueous solution and a polyoxin aqueous solution to obtain a mixed solution;
B) and mixing the mixed solution with tween to obtain the weather spot control agent.
Specifically, the method comprises the following steps:
firstly, weighing ethylene urea, dissolving the ethylene urea in water, and stirring the ethylene urea until the ethylene urea is completely dissolved to prepare a solution a;
weighing polyoxin, dissolving in water, stirring until the polyoxin is completely dissolved, and preparing into a solution b;
then mixing the solution a and the solution b, and stirring uniformly to prepare solution c;
and mixing the Tween and the solution c, and stirring fully and uniformly in the same direction to obtain the solution of the climate spot control agent.
The stirring may be a stirring method known to those skilled in the art, and the present invention is not limited thereto, and the rotation speed is preferably 80 to 120 r/min.
The invention also provides application of the composition for preventing and treating the tobacco climate spots. The application of the composition for preventing and treating the climatic spots is not limited to the climatic spots of the tobacco, and the composition can also be applied to the prevention and treatment of the climatic spots of other crops and also has better technical effect.
The aqueous solution of the composition for preventing and treating the tobacco climatic spots can reduce the morbidity of the climatic spots in the growth and development process of the tobacco and has a certain inhibiting effect on the disease condition of the climatic spots of the tobacco.
When the composition is applied to tobacco climate spots, taking the aqueous solution of the climate spot control composition as an example, the application method is preferably as follows:
the spraying period of the agent is preferably in the vigorous growth middle period (about 50 days of transplantation) after the flue-cured tobacco is transplanted to a field;
the spraying amount and the spraying frequency of the agent are preferably 40-50 kg of the flue-cured tobacco climate spot control agent solution per mu; the density of the tobacco plants is 1100-1200 plants/mu;
the spraying method is preferably to spray the tobacco leaves from bottom to top and from top to bottom by using an atomizing sprayer so that the front and back surfaces of the tobacco leaves are uniformly covered by the tobacco climate spot control agent;
the spraying weather condition is preferably carried out at about 7 o' clock in the morning on cloudy days or sunny days, the wind speed is not too high, and the spraying needs to be supplemented once in time if rain occurs.
The spraying method is not particularly limited, and may be a general method of spraying a pesticide, and preferably, the spraying is performed using a device capable of atomizing a solution, and in some embodiments of the present invention, the solution is atomized using an atomization system of a manually pressurized gongnon-16 type knapsack sprayer or an electrically pressurized gongnon-36 type motorized sprayer.
In some embodiments of the present invention, the aqueous solution of the composition for controlling weather spots is diluted 25 to 35 times.
The invention also provides a weather stain control agent which comprises the weather stain control composition.
In certain embodiments of the present invention, the weather spot control agent further comprises: an auxiliary material acceptable for pesticide.
The above-mentioned agriculturally acceptable auxiliary material may be any one of or a combination of two or more of a solid carrier, a liquid diluent and a surfactant, and the present invention is not particularly limited thereto. The solid carrier, the liquid diluent and the surfactant are not particularly limited in the present invention, and may be those suitable for use in pesticide preparations, which are well known to those skilled in the art.
In some embodiments of the present invention, the formulation of the weather spot control agent is water suspension, oil suspension, emulsifiable concentrate, microemulsion, water dispersible granule, wettable powder, granule, soluble powder, colloidal agent, seed coating agent, oil, sustained release agent, smoke agent or capsule.
The invention provides a composition for controlling climatic spots, which comprises the following components: ethylene urea and polyoxin.
The invention adopts ethylene urea as an ozone reactant, combines with ozone in the air, and generates a chemical reaction to form an oxidation protective film on the surface of tobacco leaves, thereby preventing the ozone from continuously entering the tobacco leaves through air holes, reducing the concentration of the ozone around the leaves and preventing the disease from deteriorating.
The polyoxin serving as an antibiotic bactericide can interfere the biosynthesis of chitin on cell walls of germs, so that the cell walls of the germs cannot be biosynthesized to cause the death of the germs. After the germ tube and hyphae contact the medicament, the local part expands, breaks and overflows the cell contents, and the cell contents can not normally develop, so that the cell is dead, and the germ spore production and the lesion enlargement can be inhibited. Therefore, the polyoxin can prevent other bacterial diseases caused by tobacco climate spots.
The composition for preventing and treating the climate spots can effectively prevent the occurrence of the climate spots of field tobacco, inhibit the morbidity of the climate spots of the tobacco, avoid the adverse effects of ozone in the air on chlorophyll-rich plant tissues such as the tobacco and the like, such as the generation of point marks, spots or spots on leaf tips, the damage of chloroplasts and the like, and further ensure the tobacco quality in the tobacco planting process. And simultaneously, other tobacco bacterial diseases caused by climate spots are prevented and treated.
Detailed Description
To further illustrate the present invention, the weather stain control composition provided by the present invention, and its formulation and use are described in detail below with reference to examples.
Example 1
Preparing a flue-cured tobacco climate spot control agent solution, wherein the solution is prepared from the following components in proportion, and a carrier is water:
9g/L of ethylene urea, 0.4g/L of Tween and 12g/L of polyoxin.
The preparation method comprises the following steps:
A. weighing 9g of ethylene urea, dissolving in water, stirring until the ethylene urea is completely dissolved, and preparing into a solution a;
B. weighing 12g of polyoxin, dissolving in water, stirring until the polyoxin is completely dissolved, and preparing a solution b;
C. mixing the solution a and the solution b, and stirring uniformly to prepare solution c;
D. and (3) mixing 0.4g of Tween with the solution c, and stirring fully and uniformly in the same direction to obtain the flue-cured tobacco climate spot control agent solution.
The flue-cured tobacco climate spot control agent solution is sprayed, and the using method comprises the following steps:
spraying a flue-cured tobacco climate spot control agent solution before and after 50 days of tobacco leaf transplantation and in the middle of vigorous growing period.
The method is carried out at about 7 am in cloudy days or sunny days, and the wind speed is not too high. If it is raining, the water is required to be sprayed again in time.
Spraying with atomizing sprayer from bottom to top and from top to bottom to make both sides of the leaf be uniformly covered with the agent for preventing and treating tobacco climate spots.
The dosage of the agent for preventing and treating the tobacco climate spots is 40kg to 50kg per mu.
And diluting the cured tobacco climate spot control agent solution by 25-35 times during spraying.
Example 2
Preparing a flue-cured tobacco climate spot control agent solution, wherein the solution is prepared from the following components in proportion, and a carrier is water:
3g/L of ethylene urea, 0.15g/L of Tween and 4.5g/L of polyoxin
The preparation method comprises the following steps:
A. weighing 3g of ethylene urea, dissolving in water, stirring until the ethylene urea is completely dissolved, and preparing into a solution a;
B. weighing 4.5g of polyoxin, dissolving in water, stirring until the polyoxin is completely dissolved, and preparing a solution b;
C. mixing the solution a and the solution b, and stirring uniformly to prepare solution c;
D. and (3) mixing 0.15g of Tween with the solution c, and stirring fully and uniformly in the same direction to obtain the flue-cured tobacco climate spot control agent solution.
The flue-cured tobacco climate spot control agent solution is sprayed, and the using method comprises the following steps:
spraying a flue-cured tobacco climate spot control agent solution before and after 50 days of tobacco leaf transplantation and in the middle of vigorous growing period.
The method is carried out at about 7 am in cloudy days or sunny days, and the wind speed is not too high. If it is raining, the water is required to be sprayed again in time.
Spraying with atomizing sprayer from bottom to top and from top to bottom to make both sides of the leaf be uniformly covered with the agent for preventing and treating tobacco climate spots.
The dosage of the agent for preventing and treating the tobacco climate spots is 40kg to 50kg per mu.
And diluting the cured tobacco climate spot control agent solution by 25-35 times during spraying.
Example 3
Preparing a flue-cured tobacco climate spot control agent solution, wherein the solution is prepared from the following components in proportion, and a carrier is water:
4.5g/L of ethylene urea, 0.2/L of Tween and 6g/L of polyoxin
The preparation method comprises the following steps:
A. weighing 4.5g of ethylene urea, dissolving in water, stirring until the ethylene urea is completely dissolved, and preparing into a solution a;
B. weighing 6g of polyoxin, dissolving in water, stirring until the polyoxin is completely dissolved, and preparing a solution b;
C. mixing the solution a and the solution b, and stirring uniformly to prepare solution c;
D. and (3) mixing 0.2g of Tween with the solution c, and stirring fully and uniformly in the same direction to obtain the flue-cured tobacco climate spot control agent solution.
The flue-cured tobacco climate spot control agent solution is sprayed, and the using method comprises the following steps:
spraying a flue-cured tobacco climate spot control agent solution before and after 50 days of tobacco leaf transplantation and in the middle of vigorous growing period.
The method is carried out at about 7 am in cloudy days or sunny days, and the wind speed is not too high. If it is raining, the water is required to be sprayed again in time.
Spraying with atomizing sprayer from bottom to top and from top to bottom to make both sides of the leaf be uniformly covered with the agent for preventing and treating tobacco climate spots.
The dosage of the agent for preventing and treating the tobacco climate spots is 40kg to 50kg per mu.
And diluting the cured tobacco climate spot control agent solution by 25-35 times during spraying.
Example 4
After the tobacco leaves are sprayed by the method in the embodiment 1, 5 points are respectively taken and marked, and the disease incidence and disease index of the climatic spots are investigated and marked as a sample 1 (the climatic spot control agent).
By adopting the method of the embodiment 1, the same amount of the flue-cured tobacco climate spot control agent solution is changed into clear water, and the incidence rate and disease index of the climate spots are investigated and recorded as a sample 2 (clear water).
By adopting the method of example 1, the same amount of flue-cured tobacco climate spot control agent solution is changed into 1L water containing ethylene urea without tween and polyoxin, the concentration of ethylene urea is the same as that of example 1, the tobacco is sprayed, and the incidence rate and disease index of the climate spots are investigated and are recorded as sample 3 (ethylene urea).
By adopting the method of example 1, the flue-cured tobacco climate spot control agent solution with the same amount is changed into 1L water which does not contain ethylene urea, does not contain Tween and contains polyoxin (the concentration is the same as that in example 1), and the tobacco is sprayed to investigate the incidence rate and disease index of the climate spots, and the sample is marked as sample 4 (polyoxin).
By adopting the method of example 1, the same amount of flue-cured tobacco climate spot control agent solution is changed into 1L of water containing ethylene urea, no tween, and containing polyoxin, and the concentrations of ethylene urea and polyoxin are the same as in example 1, the tobacco is sprayed, and the incidence rate and disease index of the climate spots are investigated and are recorded as sample 5 (no tween).
And (3) counting the morbidity and disease index of the tobacco leaves after spraying for 5 days, 10 days and 20 days respectively, and counting the appearance quality of the original tobacco of the lower leaves, the middle leaves and the upper leaves of the flue-cured tobacco leaves. The tests were carried out in 2014 in Pingyuan county, Mei county and Roping county, Yunan Qujing City, wherein the varieties to be tested are Yue-Yan 97, Yun-Yan 87 and K326 respectively. The results are shown in tables 1.1, 1.2 and 1.3, wherein table 1.1 shows the occurrence of climate spots of samples in Pingyuan prefecture of Meizhou, table 1.2 shows the occurrence of climate spots of samples in Meizhou prefecture of Meizhou, and table 1.3 shows the occurrence of climate spots of samples in Roping prefecture of Yunnan.
TABLE 1.1 occurrence of climate spots in Pingyuan county, Meizhou
TABLE 1.2 pathological macula onset in Meizhou Mei county
TABLE 1.3 pathological condition of each treatment in Roping county, Yunnan province
As can be seen from tables 1.1, 1.2 and 1.3, the incidence of disease was reduced in the case of the three places of meizhou ping yuan and mei county and yunnan luoping after 5 days and 10 days after spraying of only ethylene urea, but the disease index was increased compared to the case of spraying of the weather spot control agent. The morbidity of Meizhou Pingyuan and Meixian and Yunnan Luopingsandi is reduced by only spraying polyoxin for 5 days and 10 days compared with the morbidity of spraying clear water, the effect is not very obvious, but the disease index is obviously reduced. When the solution containing the ethylene urea and the polyoxin and not containing the Tween is sprayed, the morbidity and the disease index of the climatic spots are reduced compared with clear water, but the morbidity and the disease index are larger than those of the sample 1 (the flue-cured tobacco climatic spot control agent) compared with the flue-cured tobacco climatic spot control agent solution, so that the ethylene urea solution with the concentration has a prevention effect on the morbidity of the tobacco climatic spots, the polyoxin solution has an inhibition and slowing effect on the disease of the tobacco climatic spots, and the Tween is added to help the solution to be emulsified and covers the tobacco leaves. After the flue-cured tobacco climate spot control agent is sprayed for 5 days, compared with the method of spraying clear water, the morbidity of the Pingyuan tobacco, the Meixian tobacco and the Yunnan Luopingsu tobacco is respectively reduced by 13.27 percent, 12.61 percent and 12.51 percent, and the disease index is respectively reduced by 6.03 percent, 5.57 percent and 5.62 percent. After the flue-cured tobacco climate spot control agent is sprayed for 10 days, compared with the method of spraying clear water, the morbidity of Pingyuan in Meizhou, Meixian county and Luopingsanlusan is reduced by 21.74 percent, 18.45 percent and 23.09 percent respectively, and the disease index is reduced by 8.4 percent, 7.09 percent and 9.06 percent respectively. The flue-cured tobacco climate spot control agent solution prepared in the example 1 is sprayed, so that the morbidity of the flue-cured tobacco climate spots can be remarkably reduced, the disease index of the flue-cured tobacco climate spots can be reduced, and the further deterioration of the disease condition of diseased plants can be prevented.
Example 5
After the tobacco leaves are sprayed by the method in the embodiment 2, 5 points are respectively taken and marked, and the disease incidence and disease index of the climatic spots are investigated and marked as a sample 1 (the climatic spot control agent).
By adopting the method of the embodiment 2, the same amount of the flue-cured tobacco climate spot control agent solution is changed into clear water, and the incidence rate and disease index of the climate spots are investigated and recorded as the sample 2 (clear water).
By adopting the method of the embodiment 2, the same amount of the flue-cured tobacco climate spot control agent solution is changed into 1L of water containing ethylene urea, which does not contain tween and polyoxin, the concentration of the ethylene urea is the same as that of the embodiment 2, the tobacco is sprayed, and the incidence rate and disease index of the climate spots are investigated and are marked as a sample 3 (ethylene urea).
By adopting the method of example 2, the same amount of flue-cured tobacco climate spot control agent solution is changed into 1L of water which does not contain ethylene urea, does not contain tween and contains polyoxin (the concentration is the same as that of example 2), and the tobacco is sprayed to investigate the incidence rate and disease index of the climate spots, and the sample is marked as sample 4 (polyoxin).
By adopting the method of the embodiment 2, the same amount of the flue-cured tobacco climate spot control agent solution is changed into 1L of water containing the ethylene urea, the water containing no tween and the polyoxin, and the concentrations of the ethylene urea and the polyoxin are the same as the embodiment 2, the tobacco is sprayed, and the incidence rate and the disease index of the climate spots are investigated and are marked as a sample 5 (containing no tween).
And (3) counting the morbidity and disease index of the tobacco leaves after spraying for 5 days, 10 days and 20 days respectively, and counting the appearance quality of the original tobacco of the lower leaves, the middle leaves and the upper leaves of the flue-cured tobacco leaves. The tests were carried out in 2014 in Pingyuan county, Mei county and Roping county, Yunan Qujing City, wherein the varieties to be tested are Yue-Yan 97, Yun-Yan 87 and K326 respectively. The results are shown in tables 2.1, 2.2 and 2.3, wherein Table 2.1 shows the occurrence of climate spots of samples in Pingyuan prefecture of Meizhou, Table 2.2 shows the occurrence of climate spots of samples in Pingyuan prefecture of Meizhou, and Table 2.3 shows the occurrence of climate spots of samples in Roping prefecture of Yunnan prefecture.
TABLE 2.1 treatment of climatic mottle in Pingyuan county, Meizhou
TABLE 2.2 pathological macula onset in Meizhou Mei county
TABLE 2.3 pathological condition of each treatment in Roping county, Yunnan province
As can be seen from tables 2.1, 2.2 and 2.3, the incidence of disease was reduced in the case of the three places of meizhou ping yuan and mei county and yunnan luoping after 5 days and 10 days after spraying of only ethylene urea, but the disease index was increased compared to the case of spraying of the weather spot control agent. The morbidity of Meizhou Pingyuan and Meixian and Yunnan Luopingsandi is reduced by only spraying polyoxin for 5 days and 10 days compared with the morbidity of spraying clear water, the effect is not very obvious, but the disease index is obviously reduced. When the solution containing the ethylene urea and the polyoxin and not containing the Tween is sprayed, the morbidity and the disease index of the climatic spots are reduced compared with clear water, but the morbidity and the disease index are larger than those of the sample 1 (the flue-cured tobacco climatic spot control agent) compared with the flue-cured tobacco climatic spot control agent solution, so that the ethylene urea solution with the concentration has a prevention effect on the morbidity of the tobacco climatic spots, the polyoxin solution has an inhibition and slowing effect on the disease of the tobacco climatic spots, and the Tween is added to help the solution to be emulsified and covers the tobacco leaves. After the flue-cured tobacco climate spot control agent is sprayed for 5 days, compared with the method of spraying clear water, the morbidity of Pingyuan tobacco, Mei county and Yunnan Luopingsu is respectively reduced by 15.09, 14.01 and 14.59 percent, and the disease index is reduced by 4.94, 5.35 and 5.12. After the flue-cured tobacco climate spot control agent is sprayed for 10 days, compared with the method of spraying clear water, the morbidity of Pingyuan tobacco, Mei county and Yunnan Luopingsu is respectively reduced by 24.08 percent, 21.45 percent and 25.09 percent, and the disease indexes are respectively reduced by 9.16 percent, 8.11 percent and 8.66 percent. After the flue-cured tobacco climate spot control agent is sprayed for 20 days, compared with the method of spraying clear water, the morbidity of Pingyuan, Mei county and Yunnan Luopingsu areas in Meizhou province, Mei county and Yunnan Luopingsu province is respectively reduced by 9.31, 10.93 and 10.89 percent, and the disease index is respectively reduced by 5.09, 4.58 and 6.27. The flue-cured tobacco climate spot control agent solution prepared in the spraying example 2 can obviously reduce the incidence of the flue-cured tobacco climate spots, reduce the disease index of the flue-cured tobacco climate spots and prevent the further deterioration of the disease condition of diseased plants.
Example 6
After the tobacco leaves are sprayed by the method in the embodiment 3, 5 points are respectively taken and marked, and the disease incidence and disease index of the climatic spots are investigated and marked as a sample 1 (the climatic spot control agent).
By adopting the method of the embodiment 3, the same amount of the flue-cured tobacco climate spot control agent solution is changed into clear water, and the incidence rate and disease index of the climate spots are investigated and recorded as the sample 2 (clear water).
By adopting the method of example 3, the same amount of flue-cured tobacco climate spot control agent solution is changed into 1L water containing ethylene urea without tween and polyoxin, the concentration of ethylene urea is the same as that of example 3, the tobacco is sprayed, and the incidence rate and disease index of the climate spots are investigated and are recorded as sample 3 (ethylene urea).
By adopting the method of example 3, the same amount of flue-cured tobacco climate spot control agent solution is changed into 1L of water which does not contain ethylene urea, does not contain tween and contains polyoxin (the concentration is the same as that in example 3), and the tobacco is sprayed to investigate the incidence rate and disease index of the climate spots, and the sample is marked as sample 4 (polyoxin).
By adopting the method of example 3, the same amount of flue-cured tobacco climate spot control agent solution is changed into 1L of water containing ethylene urea, no tween, and containing polyoxin, and the concentrations of ethylene urea and polyoxin are the same as in example 3, and the tobacco is sprayed, and the incidence rate and disease index of the climate spots are investigated and recorded as sample 5 (no tween).
And (3) counting the morbidity and disease index of the tobacco leaves after spraying for 5 days, 10 days and 20 days respectively, and counting the appearance quality of the original tobacco of the lower leaves, the middle leaves and the upper leaves of the flue-cured tobacco leaves. The tests were carried out in 2014 in Pingyuan county, Mei county and Roping county, Yunan Qujing City, wherein the varieties to be tested are Yue-Yan 97, Yun-Yan 87 and K326 respectively. The results are shown in tables 3.1, 3.2 and 3.3, where Table 3.1 shows the occurrence of climate spots of samples in Pingyuan prefecture, Table 3.2 shows the occurrence of climate spots of samples in Meizhou prefecture, and Table 3.3 shows the occurrence of climate spots of samples in Roping prefecture, Yunnan.
TABLE 3.1 treatment of climatic mottle in Pingyuan county, Meizhou
TABLE 3.2 pathological macula onset in Meizhou Mei county
TABLE 3.3 pathological condition of each treatment in Roping county, Yunnan
As can be seen from tables 3.1, 3.2 and 3.3, after only spraying ethylene urea for 5 days and 10 days, the morbidity of the hinoko in meizhou, mei county and yunnan luoping san is reduced compared with that of spraying clear water, but the disease index is increased compared with that of spraying the weather spot control agent. After only spraying polyoxin for 5 days and 10 days, the morbidity of Pingyuan in Meizhou, Meixian county and Yunnan Luopingsu is reduced compared with that of spraying clear water, the effect is not very obvious, but the disease index is obviously reduced. When the solution containing the ethylene urea and the polyoxin and not containing the Tween is sprayed, the morbidity and the disease index of the climatic spots are reduced compared with clear water, but the morbidity and the disease index are larger than those of the sample 1 (the flue-cured tobacco climatic spot control agent) compared with the flue-cured tobacco climatic spot control agent solution, so that the ethylene urea solution with the concentration has a prevention effect on the morbidity of the tobacco climatic spots, the polyoxin solution has an inhibition and slowing effect on the disease of the tobacco climatic spots, and the Tween is added to help the solution to be emulsified and covers the tobacco leaves. After the flue-cured tobacco climate spot control agent is sprayed for 5 days, compared with the method of spraying clear water, the morbidity of Pingyuan tobacco, Mei county and Yunnan Luopingsu is respectively reduced by 16.13 percent, 15.13 percent and 17.68 percent, and the disease index is reduced by 7.04 percent, 6.35 percent and 6.29 percent. After the flue-cured tobacco climate spot control agent is sprayed for 10 days, compared with the method of spraying clear water, the morbidity of Pingyuan tobacco, Mei county and Yunnan Luopingsu is respectively reduced by 25.94 percent, 22.58 percent and 28.32 percent, and the disease index is respectively reduced by 9.2 percent, 8.99 percent and 9.72 percent. After the flue-cured tobacco climate spot control agent is sprayed for 20 days, compared with the method of spraying clear water, the morbidity of Pingyuan tobacco, Mei county and Yunnan Luopingsu is respectively reduced by 9.75 percent, 10.78 percent and 13.89 percent, and the disease index is respectively reduced by 5.87 percent, 5.42 percent and 7.25 percent. The flue-cured tobacco climate spot control agent solution prepared in the spraying example 3 can obviously reduce the incidence of the flue-cured tobacco climate spots, reduce the disease index of the flue-cured tobacco climate spots and prevent the further deterioration of the disease condition of the diseased plants.
The embodiment proves that the flue-cured tobacco climate spot control agent solution provided by the invention can reduce the morbidity of the climate spots in the growth and development process of tobacco and has a certain inhibiting effect on the disease conditions of the tobacco climate spots.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. A weather stain control composition, comprising: ethylene urea, polyoxin and tween.
2. The weather stain control composition as claimed in claim 1, wherein the mass ratio of ethylene urea to polyoxin is 1: (0.1-10).
3. The composition for controlling climatic spots according to claim 1, wherein the mass ratio of the tween to the ethylene urea is (0.01 to 0.1): 1.
4. the composition for controlling the climate spots according to claim 1, further comprising water, wherein the concentration of the ethylene urea is 1.5 to 15g/L, the concentration of the polyoxin is 1.5 to 15g/L, and the concentration of the tween is 0.1 to 0.5 g/L.
5. The weather stain control composition of claim 4, prepared according to the following process:
A) mixing an ethylene urea aqueous solution and a polyoxin aqueous solution to obtain a mixed solution;
B) and mixing the mixed solution with tween to obtain the weather spot control agent.
6. Use of the composition for controlling climatic spots according to any one of claims 1 to 5 for controlling tobacco climatic spots.
7. A weather stain-controlling agent comprising the weather stain-controlling composition according to any one of claims 1 to 5.
8. The agent for controlling weather spots according to claim 7, further comprising a pesticidally acceptable auxiliary.
9. The weather spot-controlling agent according to claim 7 or 8, wherein the formulation of the weather spot-controlling agent is an aqueous suspension, an oil suspension, an emulsifiable concentrate, a microemulsion, a water dispersible granule, a wettable powder, a dust, a granule, a soluble powder, a colloidal agent, a seed coating agent, an oil agent, a sustained-release agent, a smoke agent, or a capsule.
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| CN101766190A (en) * | 2008-12-26 | 2010-07-07 | 湖北中烟工业有限责任公司 | Housefly larvae chitooligosaccharide preparation for preventing and controlling tobacco leaf diseases and application thereof |
| CN103814891A (en) * | 2014-01-23 | 2014-05-28 | 乳山韩威生物科技有限公司 | Polyoxins water dispersible granule as well as preparation method and application thereof |
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| CN101766190A (en) * | 2008-12-26 | 2010-07-07 | 湖北中烟工业有限责任公司 | Housefly larvae chitooligosaccharide preparation for preventing and controlling tobacco leaf diseases and application thereof |
| WO2014086856A1 (en) * | 2012-12-04 | 2014-06-12 | Basf Agro B.V., Arnhem (Nl) | Compositions comprising a quillay extract and a biopesticide |
| CN103814891A (en) * | 2014-01-23 | 2014-05-28 | 乳山韩威生物科技有限公司 | Polyoxins water dispersible granule as well as preparation method and application thereof |
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