Nowadays, at the end of the year, with the increase of temperature, wheat grows at the same time, wheat underground pests also secretly breed, the relevant data show that the best time to eliminate wheat underground pests when the dead seedling rate reaches 3%, spray The application of pesticides is the best, so what are the methods to eliminate wheat underground pests?
Poisonous cakes:
Use 90% crystal trichlorfon 75g per acre, first use warm water to open it, then add water to 1.5kg to prepare a liquid spray and mix it on 10kg of sautéed sesame cake or colza cake, boring 4~6 Hours, that is, a poison cake. The cockroach is applied to the wheat field with cockroaches, and the insecticidal effect of the method can reach 95%.
Poison bait trap:
1, with 50% phoxim 1 kg mixed fine soil 200 ~ 240 kg, spread around the corn seedlings, can control a variety of underground pests.
2. When the larvae are 1 to 2 years old, spray 100 g of 100% trichlorfon crystals with 1 kg of water on the chopped leaves. Mix 100g of phoxim with 50g of chopped cabbage leaves per acre of larvae and apply the corn roots in the evening.
Spreading poisonous soil:
2 kg of 2% methylisophosphorus powder per acre is mixed with fine soil 30-40 kg. After mixing and ditching into the ridge, it can effectively prevent the damage of cockroach, golden worm and wheat larvae.
Spray killing:
For 1st and 2nd instar larvae, spray with 50% phoxim 800 times solution, or 2.5% deltamethrin, 20% fenvalerate 3000 times solution, and other pyrethroid insecticides; 2.5% The enemy killed 30 to 40 ml of emulsifiable concentrate and 75 kg of water and sprayed it after sunset. It should be sprayed with wet stems and leaves and sprayed 1 or 2 times to kill the tiger.
Sprinkling potion:
For the plots where the spotting is harmful, 40% methyl isoflavin or 50% phoxim 0.5 kg per acre plus 60-75 kg of water, sprayed with wheat roots along the wheat ridge, and has special effects on alfalfa and golden worms. .
The knowledge about wheat underground pest control is introduced here, more pesticide knowledge, please pay attention to China Pesticide Network
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