How to control underground pests by planting sunflowers?

How to control underground pests when growing sunflowers? The main underground pests of sunflower are mole cricket, grub, ground tiger, golden needle worm and other underground pests. The control measures are as follows. (1) Agricultural prevention and control. Before sunflower emergence or the peak period of 1st and 2nd instar larvae of ground tiger, ① can root out weeds in the field in time, bury weeds deeply or transport them out of the field to rett manure, and eliminate spawning hosts. ② irrigation is used to kill insects. In areas with favorable conditions, irrigation in time after the occurrence of ground tigers can achieve certain results. (2) physical control. The adults of beetles and ground tigers have a strong tendency to black light, which can be trapped and killed by black light in the peak period of adults. (3) chemical control. ① seed treatment: 20% carbosulfan EC 1 000 × 1 500 times, 50% phoxim EC 1 000 × 1 500 times. ② burying medicinal soil: 50% phoxim EC 50 kg per mu, mixed with fine sand or fine soil 30 kg, open a shallow ditch beside the sunflower root to spread burying soil, and then cover the soil. Or combined with the application of medicine and soil in loess land, a variety of underground pests can be controlled. ③ poison bait: 90% trichlorfon 0  5 kg mixed with 50 kg fried wheat bran as poison bait, evenly sprinkled on the seedbed in the evening, or 1 ∶ 3 ∶ 6 ∶ 9 ∶ 1 according to liquor, brown sugar, vinegar, water and 90% trichlorfon crystal, 1 plate per 200m 2 land. ④ poisonous weeds trapping: cut up fresh grass or vegetables, use 50% phoxim 0.1kg plus water 22.5kg, spray on 100kg grass, put them in small piles in the evening and trap tigers. ⑤ was sprayed with 90% trichlorfon and 50% phoxim EC 1 000 × 1 500 times. See more sunflower planting techniques