CN111903692A - Method for preventing and treating japonica rice diseases - Google Patents
Method for preventing and treating japonica rice diseases Download PDFInfo
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- CN111903692A CN111903692A CN202010621043.7A CN202010621043A CN111903692A CN 111903692 A CN111903692 A CN 111903692A CN 202010621043 A CN202010621043 A CN 202010621043A CN 111903692 A CN111903692 A CN 111903692A
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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
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/647—Triazoles; Hydrogenated triazoles
- A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
-
- 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
- A01G22/22—Rice
-
- 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
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
- A01N37/50—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids the nitrogen atom being doubly bound to the carbon skeleton
-
- 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
-
- 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
- A01N43/22—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 rings with more than six members
-
- 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
- A01N47/40—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 a double or triple bond to nitrogen, e.g. cyanates, cyanamides
- A01N47/42—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 a double or triple bond to nitrogen, e.g. cyanates, cyanamides containing —N=CX2 groups, e.g. isothiourea
- A01N47/44—Guanidine; Derivatives thereof
Abstract
The invention discloses a method for preventing and treating japonica rice diseases, which comprises the following steps: (1) applying tebuconazole solution 7-10 days before the opening of the japonica rice, wherein the application amount is 80-90 mL/mu; (2) 2-3 days before the opening of the japonica rice, applying a first mixed pesticide of trifloxystrobin, propiconazole and difenoconazole with the application amount of 30-60 mL/mu; (3) and applying a second mixed pesticide of validamycin and brassinolide 15 days after the finish-heading of the japonica rice, wherein the application amount is 10-50 mL/mu. The invention adopts a plurality of pesticides to be combined for use, and brassinolide is added into validamycin as an additive, so that the method can prevent and treat the false smut and other diseases simultaneously.
Description
Technical Field
The invention relates to the technical field of rice field disease control, in particular to a method for controlling japonica rice diseases.
Background
The japonica rice has diseases in the growth process, such as false smut, sheath blight and rice blast, and part of the japonica rice also has black streaked dwarf disease, so that the japonica rice needs to be controlled.
The japonica rice has the highest probability of rice false smut, and in actual production, the rice false smut needs to be mainly prevented and controlled, and other diseases are concerned. In the prevention and treatment, one of validamycin, eimeria, hexaconazole and tebuconazole is generally selected and applied before the laceration and after the ziphus, respectively.
The existing japonica rice disease control mostly adopts single pesticide, has poor control effect, and particularly controls diseases except false smut.
Disclosure of Invention
The invention aims to provide a method for preventing and treating japonica rice diseases, which can prevent and treat multiple diseases.
A method for preventing and controlling japonica rice diseases comprises the following steps:
(1) applying tebuconazole solution 7-10 days before the opening of the japonica rice, wherein the application amount is 80-90 mL/mu;
(2) 2-3 days before the opening of the japonica rice, applying a first mixed pesticide of trifloxystrobin, propiconazole and difenoconazole with the application amount of 30-60 mL/mu;
(3) and applying a second mixed pesticide of validamycin and brassinolide 15 days after the finish-heading of the japonica rice, wherein the application amount is 10-50 mL/mu.
The invention has the beneficial effects that: the method adopts a plurality of pesticides to be combined for use, and adds brassinolide as an additive in validamycin, so that the method can prevent and treat the false smut and other diseases simultaneously.
In addition, the method for preventing and controlling the japonica rice diseases provided by the invention can also have the following additional technical characteristics:
further, the mass fraction of the tebuconazole solution in the step (1) is 5-10%.
Further, the mass fraction of the first mixed pesticide in the step (2) is 5-8%, and the mass ratio of trifloxystrobin to propiconazole to difenoconazole is 3:2: 2-5.
Further, the mass fraction of the second mixed pesticide in the step (3) is 10-15%, and the mass ratio of validamycin to brassinolide is 5: 1-3.
Further, after the second mixed pesticide is applied in the step (3), the weather condition is continuously observed, and if it rains within 12 hours after the application, the second mixed pesticide is applied after the rain is stopped.
Further, the application amount of the second mixed pesticide before raining is V1, and the application amount after raining satisfies the following formula:
wherein V2 is the application amount of the second mixed pesticide after raining, and P is the precipitation amount within 12 hours after application, mm.
Further, the first application and the second application are required to meet the requirement that the air humidity of the field is 20-40%.
Further, the method further comprises:
and continuously observing the japonica rice in the tillering stage of the japonica rice, and if the black-streaked dwarf disease occurs, applying a third mixed pesticide for multiple times, wherein the mass fraction of the third mixed pesticide is 10-20%, the third mixed pesticide is a mixture of moroxydine and ribavirin, and the mass ratio of the moroxydine to the ribavirin is 20: 1-3.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
In order to make the objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with examples are described in detail below. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Example 1
A method for preventing and controlling japonica rice diseases comprises the following steps:
(1) applying tebuconazole solution 7 days before the opening of the japonica rice, wherein the mass fraction of the tebuconazole solution is 5%, and the application amount is 85 mL/mu;
(2) applying a first mixed pesticide of trifloxystrobin, propiconazole and difenoconazole 3 days before the opening of the japonica rice, wherein the mass fraction of the first mixed pesticide is 5%, the mass ratio of the trifloxystrobin to the propiconazole to the difenoconazole is 3:2:2, and the application amount is 45 mL/mu;
(3) 15 days after the ears of the japonica rice are leveled, a second mixed pesticide of validamycin and brassinolide is applied, the mass fraction of the second mixed pesticide is 10%, the mass ratio of the validamycin to the brassinolide is 5:1, and the application amount is 30 mL/mu.
The invention has the advantages that a plurality of pesticides are combined for use, and the brassinolide is added into the validamycin as an additive, so that the method can prevent and treat the false smut and other diseases.
For better control, after the second mixed pesticide is applied in the step (3), the weather condition is continuously observed, and if it rains within 12 hours after the application, the second mixed pesticide is applied after the rain is stopped.
Specifically, the application amount of the second mixed pesticide before raining is V1, and the application amount after raining satisfies the following formula:
wherein V2 is the application amount of the second mixed pesticide after raining, and P is the precipitation amount within 12 hours after application, mm.
In addition, the first application and the second application are required to satisfy a field air humidity of 30%.
In addition, the method further comprises:
continuously observing the japonica rice in the tillering stage of the japonica rice, and if the black-streaked dwarf disease occurs, applying a third mixed pesticide for multiple times, wherein the mass fraction of the third mixed pesticide is 15%, the third mixed pesticide is a mixture of moroxydine and ribavirin, and the mass ratio of the moroxydine to the ribavirin is 20: 2.
Example 2
This embodiment is substantially the same as embodiment 1 except for the following.
A method for preventing and controlling japonica rice diseases comprises the following steps:
(1) applying tebuconazole solution 10% by mass and 85 mL/mu 10 days before opening the japonica rice;
(2) applying a first mixed pesticide of trifloxystrobin, propiconazole and difenoconazole 3 days before the opening of the japonica rice, wherein the mass fraction of the first mixed pesticide is 8%, the mass ratio of the trifloxystrobin to the propiconazole to the difenoconazole is 3:2:5, and the application amount is 45 mL/mu;
(3) 15 days after the ears of the japonica rice are leveled, a second mixed pesticide of validamycin and brassinolide is applied, the mass fraction of the second mixed pesticide is 15%, the mass ratio of the validamycin to the brassinolide is 5:3, and the application amount is 30 mL/mu.
Example 3
This embodiment is substantially the same as embodiment 1 except for the following.
A method for preventing and controlling japonica rice diseases comprises the following steps:
(1) applying tebuconazole solution 7 days before the opening of the japonica rice, wherein the mass fraction of the tebuconazole solution is 8 percent, and the application amount is 85 mL/mu;
(2) applying a first mixed pesticide of trifloxystrobin, propiconazole and difenoconazole 3 days before the opening of the japonica rice, wherein the mass fraction of the first mixed pesticide is 8%, the mass ratio of the trifloxystrobin to the propiconazole to the difenoconazole is 3:2:3, and the application amount is 45 mL/mu;
(3) 15 days after the ears of the japonica rice are leveled, a second mixed pesticide of validamycin and brassinolide is applied, the mass fraction of the second mixed pesticide is 12%, the mass ratio of the validamycin to the brassinolide is 5:1, and the application amount is 30 mL/mu.
Comparative example 1
This comparative example is substantially the same as example 3 except that:
the first mixed pesticide and the second mixed pesticide are replaced by validamycin, the concentration of the validamycin is 10%, and the field air humidity is 10-20%.
Comparative example 2
This comparative example is substantially the same as example 3 except that:
the first mixed pesticide and the second mixed pesticide are replaced by tebuconazole, the concentration of the tebuconazole is 10%, and the field air humidity is 10-20%.
Comparative example 3
This comparative example is substantially the same as example 3 except that:
when it rains, the using amount of the second mixed pesticide V2 ═ V1/2.
Comparative example 4
This comparative example is substantially the same as example 3 except that:
and replacing the third mixed pesticide by moroxydine, wherein the mass fraction is 15%.
In order to better illustrate the invention, the method of the embodiment and the comparative example is adopted to test Yongyou No. 1538 in a certain area of Fuzhou city in Jiangxi province, the total raining frequency is 86 times in the growth process of japonica rice, the daily precipitation is 36.8mm, the disease control effect of each embodiment and the comparative example is counted, and the result is shown in Table 1.
TABLE 1
| Grouping | False smut (%) | Sheath blight (%) | Blast (%) | Black streaked dwarf disease (%) |
| Example 1 | 71.2 | 68.3 | 76.1 | 72 |
| Example 2 | 80.4 | 69.7 | 75.4 | 74.8 |
| Example 3 | 75.3 | 71.2 | 75.6 | 76.9 |
| Comparative example 1 | 52.6 | 48.1 | 46.2 | 63.4 |
| Comparative example 2 | 55.8 | 44.5 | 43.9 | 65.2 |
| Comparative example 3 | 75.6 | 69.4 | 77.2 | 74.5 |
| Comparative example 4 | 74.4 | 70.2 | 76.1 | 53.8 |
Referring to table 1, it can be seen from examples 1 to 3 that the methods of the present invention all achieve good control effects, wherein the control effect of example 3 is optimal;
as can be seen from comparative examples 1 and 2, when a single pesticide is used, the control effect is significantly lower than that of the examples of the present invention, particularly the control of sheath blight and rice blast;
although the control effect of the comparative example 3 is close to that of the example 3, the daily average precipitation of japonica rice in the growth period is 36.8mm, and the dosage of the second mixed pesticide of the comparative example 3, namely V2 is V1/2, which is inevitably greater than that of the example 3, so that the example 3 achieves a better control effect by using a small amount of pesticide;
comparative example 4 the prevention and treatment of the black-streaked dwarf disease by using a single pesticide is obviously lower than that of example 3, which shows that the prevention and treatment effect of the invention by using the combined pesticide is better.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A method for preventing and treating japonica rice diseases is characterized by comprising the following steps:
(1) applying tebuconazole solution 7-10 days before the opening of the japonica rice, wherein the application amount is 80-90 mL/mu;
(2) 2-3 days before the opening of the japonica rice, applying a first mixed pesticide of trifloxystrobin, propiconazole and difenoconazole with the application amount of 30-60 mL/mu;
(3) and applying a second mixed pesticide of validamycin and brassinolide 15 days after the finish-heading of the japonica rice, wherein the application amount is 10-50 mL/mu.
2. The japonica rice disease control method according to claim 1, wherein the tebuconazole solution in the step (1) is 5-10% by mass.
3. The japonica rice disease control method according to claim 1, wherein the first mixed pesticide in the step (2) is 5-8% by mass, and the mass ratio of trifloxystrobin, propiconazole and difenoconazole is 3:2: 2-5.
4. The method for controlling japonica rice diseases according to claim 1, wherein the second mixed pesticide in step (3) is contained in an amount of 10 to 15% by mass, and the ratio of validamycin to brassinolide is 5:1 to 3 by mass.
5. The japonica rice disease control method according to claim 1 or 4, wherein the weather conditions are continuously observed after the second mixed pesticide is applied in step (3), and if it rains within 12 hours after the application, the second mixed pesticide is applied after the rain stops.
6. The japonica rice disease control method according to claim 5, wherein the application amount of the second mixed pesticide before raining is V1, and the application amount after raining satisfies the following formula:
wherein V2 is the application amount of the second mixed pesticide after raining, and P is the precipitation amount within 12 hours after application, mm.
7. The method for controlling japonica rice diseases according to claim 6, wherein the first application and the second application are required to satisfy a field air humidity of 20-40%.
8. The japonica rice disease control method according to claim 1, characterized by further comprising:
and continuously observing the japonica rice in the tillering stage of the japonica rice, and if the black-streaked dwarf disease occurs, applying a third mixed pesticide for multiple times, wherein the mass fraction of the third mixed pesticide is 10-20%, the third mixed pesticide is a mixture of moroxydine and ribavirin, and the mass ratio of the moroxydine to the ribavirin is 20: 1-3.
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Application publication date: 20201110 |