Rice pest control and use technology
I. Main insect pest control and use technologies for rice
(I) Brown planthopper
1, buprofezin. Recommended dosage: 112.5~187.5g active ingredient/ha; use technical points: Spraying at the peak of egg incubation of N. lugens to 1-2 instar nymphs, and keeping the water layer in the field when spraying; Cautions for use: This medicine is for the fly fleas. Adults have no effect, we must pay attention to medication period.
2, chlorpyrifos. Recommended dosage: 450-600 g active ingredient per hectare for young instar nymphs, 600-720 g active ingredient per hectare for senior instar nymphs and adults; use of technical points: spraying, spraying at the base of rice paddy; other matters: unusual occurrence When added, 25% buprofezin WP 150 to 300 g/hectare can be used together.
3, fipronil. Recommended dosage: 30~37.5g active ingredient/ha; Use technical points: Focus on spraying on the base of rice paddy; Note: The pesticide is highly toxic to crustaceans such as shrimp, crab, and bees, so as to prevent farm water from contaminating the culture pond during use. Rivers and sprays contaminate honey plants. Other matters: The pesticide has good control effect against the leaf roller, leaf borer, and rice stem borer, and can be preferentially selected when several insect pests occur at the same time.
4, Thiamethoxam. Recommended dosage: 7.5~15g active ingredient/ha, using technical points: Use the spray on the base of the rice paddy, and keep the water layer in the field when spraying.
5, isoprocarb. The recommended dosage is 450~600g active ingredient/ha; use technical points: Use the spray on the base of rice paddy.
6, pymetrozine. Recommended dosage: 60~75g active ingredient/ha; Use technical points: Use spray on the base of rice pad and spray evenly. Other matters: The mechanism of action of the drug is that the adult and nymphs have the effect of blocking the oral needles after they come in contact with the drug, stopping eating and causing hunger and death, so the drug has a slower effect and a longer effective period.
(b) White-backed flycatchers
1, imidacloprid. It is recommended to use a dose of 15-30 g/ha; use technical tips: Spray the spray and keep the water layer in the field.
2, buprofezin. The recommended dosage is 112.5~150g active ingredient per hectare; the use of technical points: Spraying from the peak of egg hatch of whitebacked planthoppers to 1-2 instar nymphs period, spraying water to keep the water layer in the field and spraying the base of the rice bundles. When applying pesticides, the water layer should be kept in the fields. Use cautions: The drug has no insecticidal effect on adult locusts and must pay attention to the period of medication.
3, chlorpyrifos. The recommended dosage is 360~600 g active ingredient/ha; use technical points: At the base of rice paddy.
4, isoprocarb. The recommended dosage is 450~600g active ingredient/ha; use technical points: Use the spray on the base of rice paddy.
(iii) Rice leaf roller
1, chlorpyrifos. The recommended dosage is 600-720 g active ingredient per hectare; the use of technical points: Spraying from the egg hatching height of the leaf roller to the second instar larvae (first roll leaf phase) or 2 days after the egg hatching peak, the spray must be used. Uniform.
2, fipronil. The recommended dosage is 30~37.5 g active ingredient per hectare; the use of technical points: spraying in the height of the leaf roller larvae hatching to the second instar larva before (first leaf rolling) or 2 days after the egg hatching peak, spray must be Uniform; Note: This agent is highly toxic to crustaceans such as shrimp, crabs, and bees. When used, it prevents the pollution of farm ponds, rivers, and the use of pesticides to contaminate honey plants.
3. Furanidide hydrazide. The recommended dosage is 150~180g active ingredient per hectare; the use of technical points: spraying in the vertical leaf carp eggs hatching period to the second instar larvae (first leaf rolling stage) or 2 days after the egg hatching peak, spray must be Uniform.
4. Profenofos. The recommended dosage is 600-720 g active ingredient per hectare; the use of technical points: Spraying from the egg hatching height of the leaf roller to the second instar larvae (first roll leaf phase) or 2 days after the egg hatching peak, the spray must be used. Uniform.
5, insecticide or insecticide double. The recommended dosage is 810~1080g active ingredient/ha; use technical points: spray in the height of egg larvae of the leaf roller till the second instar larvae (first roll leaf phase) or 2 days after the egg hatching peak, spray must be Uniform.
6, Bacillus thuringiensis. Recommended dosage: 8000IU/mg wettable powder 3750-4500g/ha (16000IU/mg wettable powder 1800-2250g/ha); using technical points: spraying in the incubating period of rice leaf roller. Note: (1) The application period is generally 2-3 days ahead of the use of chemical pesticides, the effect of the young larvae of pests is good. Above 30°C, the effect of pesticide application is best; (2) Can not be mixed with systemic organophosphorus insecticides or fungicides; (3) Bt WPs have high toxicity to silkworms and must be taken care of when using in sericulture areas. Contact with silkworm, sericulture area and application area must maintain a certain distance.
7, Bacillus thuringiensis and insecticide or insecticide dual use. Recommended dosage: 8000IU/mg wettable powder 3750-4500g/ha (16000IU/mg wettable powder 1800-2250g/ha), insecticidal or insecticidal double 675~945g active ingredient/ha; use technical points : It is sprayed on the incubating stage of rice leaf roller.
8, chlorpyrifos, triazophos (25% EC). Recommended dosage: 300~450g active ingredient/ha; use technical points: spray in the height of egg larvae of the leaf roller till the second instar larvae (first roll leaf stage) or 2 days after the egg hatching peak, spray must be Uniform.
(4) II.
1, triazophos. The recommended dosage is 300-450 g active ingredient per hectare; the use of technical points: prevention and control at the time of delivery, prevention and control in the general year, spraying after 5 to 6 days (before 2nd instar larvae) after the peak of egg hatching, major prevention and control of the year 2 Second, the first time before the hatching peak 1 to 2 days, every 6 to 7 days to prevent the second time; booting control should be sprayed at the beginning of egg hatching.
2, fipronil. The recommended dosage is 30~37.5 g active ingredient per hectare; the use of technical points: prevention and control during the delivery period, prevention and control once in general years, spraying after 5 to 6 days (before 2nd instar larvae) after egg hatching peak, prevention and treatment of major outbreaks 2 Second, the first time before the hatching peak 1 to 2 days, every 6 to 7 days to prevent the second time; booting control should be sprayed at the beginning of egg hatching.
3, chlorpyrifos. The recommended dosage is 450~600g active ingredient/ha; use technical points: prevention and control in the childbirth period, prevention and control once in general year, spraying after 5~6 days (before 2nd instar larvae) after egg hatching peak, prevention and treatment of major outbreak 2 Second, the first time before the hatching peak 1 to 2 days, every 6 to 7 days to prevent the second time; booting control should be sprayed at the beginning of egg hatching.
4, insecticide or insecticide double. Recommended dosage: 675~945g active ingredient/hectare; Technical points of use: prevention and control during the delivery period, prevention and control once in general year, spraying after 5~6 days (before 2nd instar larvae) after peak of egg hatching, major annual control 2 Second, the first time before the hatching peak 1 to 2 days, every 6 to 7 days to prevent the second time; booting control should be sprayed at the beginning of egg hatching.
(v) Sanhuayu
1, triazophos. The recommended dosage is 300~450g active ingredient/ha; use technical points: Spraying at the beginning of the egg hatching period.
2, killing Dan. A recommended dose of 600-750 g ai/ha is used. Use technical tips: Spray on the beginning of the incubation period.
3, insecticide or insecticide double. Recommended dosage: 675-945 active ingredients per hectare of insecticides; he uses technical points: spraying in the beginning of the incubation period.
4, fipronil. The recommended dosage is 30~37.5 g active ingredient/ha; use technical points: Spraying at the beginning of the egg incubation period.
II. Main diseases and control agents and use technology of rice
(I) Rice blast
1, tricyclazole. Recommended Dosage: 225-300g/ha; Use technical points: It is a systemic fungicide that must be sprayed before the bacteria invade or 5-7 days before the onset of disease. The number of sprays depends on the weather and the condition of the disease. In general, severe disease fields need to be sprayed 2-3 times, with an interval of 7-10 days.
2, rice straw spirit. Recommended dosage: 600-800 g/ha; Use technical points: The therapeutic therapeutic fungicide can be used before and after the invading bacteria, but it must be used before the onset of disease to have a good control effect. The sooner the effect is better, the number of sprays will be determined depending on the weather and the condition of the disease. Generally, the sick field needs to be sprayed 2-3 times, and the interval is 7-10 days. Pay attention to the use of other fungicides with different mechanisms of action or use them in combination to prevent drug resistance.
3, different rice nets. Recommended dosage: 900-1200g/ha; Use technical points: The therapeutic therapeutic fungicide can be used before and after the bacteria invade, but it must be used before the onset of the disease to have a good control effect. Before incursion to the onset stage, medication should be used. The sooner the effect is better, the number of sprays will be determined depending on the weather and the condition of the disease. Generally, the sick field needs to be sprayed 2-3 times with an interval of 7-10 days. Pay attention to the use of other fungicides with different mechanisms of action or use them in combination to prevent drug resistance.
4, kasugamycin. The recommended dosage is 30-45 g/ha; use technical points: The therapeutic therapeutic fungicide can be used before and after the bacteria invade, but it must be used before the onset of disease to have a better control effect. As early as possible, the better, depending on the development of the weather and the condition determines the number of sprays, the general sick fields need to spray 2-3 times, the interval is 7-10 days. Pay attention to the use of other fungicides with different mechanisms of action or use them in combination to prevent drug resistance.
(b) Sheath blight
1. Jinggangmycin. The recommended dosage is 150-187.5 g/ha; Use technical points: Non-endocrine protective fungicides must be sprayed before the bacteria invade. When the spray is applied, it is necessary to pay attention to the lower part of the rice where the disease is being sprayed. It is necessary to spray continuously from the end of the tiller to the wax ripening interval of about 10 days in order to maintain better results.
2, triazole fungicide - 300 g / l difenoconazole, propiconazole EC. Recommended dosage: 67.5-90g/ha; use technical points: spraying at the beginning of the disease, evenly spray the middle and lower part of the rice plant, keep the shallow water layer in the field for 2-3 days while spraying, and the natural water in the field will fall 3-4 After a few days, it will be back on the shallow water layer. This works well. Depending on the weather and the condition of the disease, the number of sprays is decided. Usually, the sick field needs to be sprayed 2-3 times, with an interval of 7-10 days.
(III) Bacterial bacterial blight and streak disease in rice
1, Yezizole. The recommended dosage is 300-375 g/ha; the technical point of use: The drug has systemic absorption, but it mainly plays a protective role. It has poor treatment effect on the pathogen after infection, and it is used before onset. Pay attention to the rotation with other fungicides to avoid drug resistance.
2, Thousand Copper. The recommended dose is 300-375 g/ha; use technical points: use before onset. Pay attention to the rotation with other fungicides to avoid drug resistance.
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