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Hazard: The cockroaches of the cockroaches and the cockroaches are all gathered on the back of the young tobacco leaves or sucked on the tender stems, often inducing the tobacco bituminous disease, causing the surface of the tobacco leaves to become black, resulting in a lack of luster after the roasted tobacco leaves are roasted, forming a variegated smoke. The chemical composition of tobacco leaves is badly changed, and the content of nicotine and potassium is decreased. At the same time, the use of high-toxic and high-residue pesticides to control soot is seriously affected, and the health of the tobacco is seriously affected, and the tobacco leaves have poor absorption and the resistance of the tobacco is enhanced.
Control methods: Tobacco has two red and green populations according to its body color. The resistance and drug resistance of red body color soot are higher than that of green body smoke, and the difficulty of prevention is also large. The occurrence area of ​​drug-resistant haze and the density of insect population have increased year by year. The majority of tobacco farmers are now facing the problem of how to choose to use new anti-mite agents. The following prevention methods are recommended:
1, control of soot: use 24% pirated anti-wet powder, 10 g / spray, 10% Excalibur 10 ml / spray, 24.5% green worm emulsifiable concentrate, 20 ml / sprayer; the above pesticides have significant systemic and contact The effect is that the water spray has a quick knockdown effect on the aphids, and can kill eggs, is resistant to rain, and has a long residual period and is safe for natural enemies and other beneficial organisms. It can replace pesticides that have developed resistance, such as: Emerald, enemy killing, etc.
2, prevention and control of tobacco mosaic disease: use 1.05% disease leaf poisoning 800-1000 times liquid; 3.95% virus Bick (tobacco-specific type) 20 g / sprayer, spray once every 10 days, have better control effect.
Control methods: Tobacco has two red and green populations according to its body color. The resistance and drug resistance of red body color soot are higher than that of green body smoke, and the difficulty of prevention is also large. The occurrence area of ​​drug-resistant haze and the density of insect population have increased year by year. The majority of tobacco farmers are now facing the problem of how to choose to use new anti-mite agents. The following prevention methods are recommended:
1, control of soot: use 24% pirated anti-wet powder, 10 g / spray, 10% Excalibur 10 ml / spray, 24.5% green worm emulsifiable concentrate, 20 ml / sprayer; the above pesticides have significant systemic and contact The effect is that the water spray has a quick knockdown effect on the aphids, and can kill eggs, is resistant to rain, and has a long residual period and is safe for natural enemies and other beneficial organisms. It can replace pesticides that have developed resistance, such as: Emerald, enemy killing, etc.
2, prevention and control of tobacco mosaic disease: use 1.05% disease leaf poisoning 800-1000 times liquid; 3.95% virus Bick (tobacco-specific type) 20 g / sprayer, spray once every 10 days, have better control effect.
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