The ground tiger lies down during the day and comes out at night. The larvae feed on the neck of beetroot, which leads to beet death. 1 year has two generations, and there are three kinds of ground tigers: yellow ground tigers, police ground tigers and eight-character ground tigers.
Prepare poison bait and sow it between rows or plants immediately after sowing. Preparation method of poison bait: ① Bean cake (wheat bran) poison bait: 20-25kg of bean cake (wheat bran), crushed, sieved into powder, stir-fried and evenly mixed with 0.5kg of 40% phoxim emulsifiable concentrate, the pesticide can be diluted with clear water, sprayed and stirred, and it is best to wet the bean cake (wheat bran) powder, and then spread around the seedlings according to the dosage of 4-5kg per mu. ② Poisonous grass bait: Chop the grass, add 0.3-0.5 kg pesticide every 50 kg, mix well, and spread it around the seedlings in small piles, with 20 kg poisonous grass per mu. Stir-fried oil residue, mixed with 90% trichlorfon and scattered around seedlings can trap and kill various underground pests such as cutworms and crickets.
Chemical control: in the larval stage of agrotis cutanea 1-3, 48% diclofenac EC 1500 times solution, 48% lesburn EC or 48% chlorpyrifos tianda 2000 times solution, 2.5% jinbiao EC 2000 times solution and 10% mibek EC/were used. 20% fenvalerate EC 1500 times, 20% Ma Ju EC 1500 times, 10% bromate EC 2000 times and so on.