Control methods for fast-growing poplar leaf eating pests:
1. Artificial physical control: when overwintering (overwintering), pupae of pests in underground fallen leaves or ploughed soil are collected manually to reduce the population base. Insecticides and Blacklight traps are used to reduce the population density of the next generation during the peak period of adult emergence. Based on the characteristics of the first instar larvae clustering in most varieties, manpower is arranged to remove the insect buds and egg masses, killing a large number of larvae. It is also possible to use the habit of larvae spinning and drooping after being startled to catch and kill fallen larvae through sensational tree trunks& Zwj;
2. Biological pest control: spray BT and virus at the early third instar of larvae. Spray on the ground, young and middle-aged forest with tree height below 12 meters, BT dosage 20 billion International unit/mu, or Avermectin dosage 6000-8000 times. 1% Avil oil fume agent is also selected for prevention and control. The release of Trichogramma during the egg stage is also a good control method. In the early stage of insect spawning, 50 bee releasing sites are set up per square kilometer, with a bee releasing capacity of 250000 to 1.5 million heads per hectare.
3、仿生等药剂防治：关于小龄幼虫，可选用20%泥杆 保定古筝 塑料增韧剂 拱形护坡模具 保定空调维修 托辊生产线
3. Biomimetic and other chemical prevention and control: For young larvae, 20% diflubenzuron III 25/mu, or 1.2% nicotine emulsifiable concentrates 1000-2000 times spray can be used for prevention and control. Alternatively, perforation injection can be used for prevention and control, using perforation injection to drill 3-4 holes in different directions at the breast diameter of the tree. 20% imidacloprid (Kangfuduo) soluble solution can be diluted 20-50 times or 5% imidacloprid EC can be diluted 10 times for prevention and control. 0.5% imidacloprid aqueous solution can also be used for direct perforation prevention and control. The dosage is 10 centimeters with a chest diameter of 4-6 millimeters. Pay attention to sealing the injection port after injection.