Sunflower pest control methods

Sunflower pest control methods

1. Physical control: If a diseased strain is found, it should be immediately pulled out and destroyed to prevent spread.

2. Pharmaceutical prevention and treatment

(1) Spray the lower part of the plant and the back of the flower disc 1 to 2 times with 40% striated kuli 800 to 1000 times of liquid before the sunflower buds or during the full flowering period.

(2) Spray 1000 times with 50% tolbuzin wettable powder before sunflower buds or during the full flowering period.

(3) Spray with 50% sokyline 500 to 1000 times liquid, spray at the seedling stage or flowering stage, and the control effect can reach more than 80%.

(4) When the temperature reaches 18 ~ 20 °C, 0 ~ 5 cm deep topsoil water content of more than 11%, ascomycete plate began to emerge, is the best period for ground spraying, per hectare can be 70% pentachloronitrobenzene 30 ~ 45 kg, humidified fine soil 150 ~ 225 kg, mixed evenly and sprinkled in the field, can inhibit the germination of sclerotia and kill the newly germinated young bud tube, the bacteriostatic rate can reach 91.3%, the control effect of more than 78.5%.

3. Drip irrigation prevention

(1) Use drip irrigation to control water volume. The use of submembrane drip irrigation to adjust the water supply, avoid the phenomenon of low-lying water accumulation, control the humidity of the field, and thus reduce the occurrence of sunflower sclerotia.

(2) Use drip irrigation for fertilization with water. Sub-membrane drip irrigation improves the ability of crops to resist diseases, and can also be done in a timely and appropriate amount, which can save about 20% of fertilizer. Submembrane drip irrigation saves 50% of water, reduces deep leakage, and can better prevent soil secondary salinization. Drip irrigation is applied with water fertilization and medicine, which not only saves chemical fertilizers and pesticides, but also reduces the pollution of the soil and the environment.

4. Grassland borer control method:

(1) Per hectare of farmland with 2.50% cypermethrin emulsion 200-375 ml or 20% permethrin emulsion 300-450 ml, add 450-600 kg of water after dilution and spray;

(2) Spray seedlings with 2.50% dichlorvos powder or 0.04% insecticidal sperm powder, and use 20-25 kg of medicine per hectare;

(3) Spray with 50% octylthion emulsion or 50% borer pine emulsion 500-1000 times liquid.

5. Leafminer fly control methods:

(1) Spray with 2.50% insecticide powder or 2% borer pine powder;

(2) Spray with 90% dimethoate emulsion 1000 times liquid.

6. Control method of black velvet golden turtle insect beetle:

(1) Spray with 2% borage pine or 2% Baizhi butcher powder, 15-23 kg per hectare;

(2) Spray with 35% or 50% methylthiophosphorus emulsion 500-800 times liquid;

(3) Cut the leafy branches of the elm tree into 60 cm long, immerse in 40% monocrotophos or 50% methamidophos 50 times liquid for 10 hours, insert into the sunflower field after 2 p.m., and insert 200-300 branches per hectare.

7. Mongolian gray weevil beetle control method:

(1) Use 1.50% methyl 1605 powder, 15-23 kg per hectare, and make poisonous soil from 230-300 kg of fine fluvo-aquic soil, mix evenly and sprinkle around the seedlings;

(2) Spray with 80% dichlorvos emulsion 1200 times liquid.

8. Methods of prevention and control of mesh sand diving:

(1) Control with 1.50% methyl 1605 or 0.04% insecticidal sperm powder, 30 kg per hectare of drug;

(2) Spray with 50% methamophos emulsion 500-1000 times liquid.

9. Control method of yellow-bellied lamp moth:

(1) Spray 2.50% dichlorvene powder or 5% ceivine powder, 30 kg per hectare of medicine;

(2) Spray with 90% crystalline dimethods 1000-1500 times liquid, and use 300-400 kg of medicinal solution per hectare.