Ground tigers are common pests in corn fields. There are many species. The most harmful to crops are small tigers, yellow tigers, earth tigers, white tigers and police tigers. Land tigers appear in corn fields and are prone to corn. Desperate, lack of seedlings and ridges, and serious damage will result in the destruction of the tigers. Therefore, how to effectively control the tigers? How to effectively prevent them? Let's take a look at them.
1. Aphid source and sterilized egg
Before planting, you can kill the eggs and larvae in the soil by clearing the soil, clear the weeds in the field, reduce the habitat of larvae and the spawning point of adults, and effectively control the occurrence of the tiger.
2. Chemical prevention and treatment
Direct use of pesticides: This method is commonly used to eliminate pre-3rd instar larvae. The selected agents should be mainly pyrethroid insecticides and organophosphate insecticides. 2.5% deltamethrin EC 2000 times or 20% cyanide can be used. The valerate EC is 2000-3000 times liquid, which can be directly sprayed or irrigated. For the larvae after 3 years of age, the method of trapping and poisoning the soil with bait is generally better.
3, poison bait trap
It can be sprayed on chopped green vegetables or wheat bran and oil residue with 50% phoxim 0.1 kg and water 2.0 to 2.5 kg, and placed in the field in the evening to lure the tiger to eat and poison.
4, toxic soil
20% pyrethrin emulsifiable concentrate or 50% phoxim emulsifiable concentrate and fine sand are mixed into 1:50 toxic soil, and applied to the rows of corn along the ridge. Whether it is poison bait or poisonous soil, it is best to operate in the evening, because the 3rd instar larvae mainly move at night, so in the evening, the drug effect can be better preserved, so that the control effect is better.
Land tigers do a good job in these prevention and control, so it can effectively reduce the high incidence of tigers. You can choose effective prevention methods according to local planting conditions. Corn cultivation, high yield is everyone's pursuit, so the prevention and control of the tiger is imperative. What else do you have to add to the prevention and control of the tiger?
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