The pea leafminer is also known as pea leafless fly, rape leaf leaf fly, pea leafminer, commonly known as leafworm, arch leafworm, leafhopper, and streptococci, belonging to the family Diptera, Liriomyza, due to its larval potential. The name of the food crop is leaf. Peas and cruciferous vegetables such as peas, broad beans, rapeseeds, cabbages, cabbages, radishes, etc. are heavier. In general, the damage rate of the leaves is 50%-60%. The damage rate of the preserved species of Artemisia halodendron is as high as 100% and the leaf damage rate is 90%. Some areas have changed from minor pests to major pests. The insects invade the epidermis of the host leaves through the larvae, passing through the curve and feeding on the leaves, resulting in an irregular gray-white linear tunnel, both visible on the front and back. In severe cases, the leaves are covered with insects, especially in the base leaves of the plants. The leaves often have several to several tens of larvae. The leaves are all eaten, leaving only two layers of epidermis. , impede scarring and even cause the plants to wither and die. After hatching, the larvae feed from the leaf margin inward, through the flexible membrane tissue, reach the shed tissue, and feed on the mesophyll. Adult insects suck vegetative juice and cause small white spots to be sucked, which seriously affect crop product, quality and food value. Specific prevention methods: 1. Agricultural control of clean gardens to eliminate overwintering insects and reduce the number of insects. Early spring can focus on controlling a generation of insects. Peas, lettuce, and vegetables are the main hosts of the pea leaf miner, and the population density is the largest. Prevention and control should be based on the above three types of hosts. 2. Biological control can be controlled with 0.3% alizarin EC 1000 times or 1.8% avermectin EC 2000 times, and 0.6% Ginkgolides 1000 times. 3. Chemical prevention and control of adult worms can be used 2,000 times fluorinated chloramphenicol 2000 times. For the control of larvae, at the beginning of young instar larvae, before the 2nd instar larvae stage, use 50% of Lithospermum WP 2000-3000 times or 75% of ciprofloxacin WP 5000-8000 times, 2% of A. Ammonectin benzoate 4,000 times, 5% chlorfluazuron 1500 times, 10% imidacloprid WP 4000 times, 40% aflevide 1000-1500 times, 10% cypermethrin Emulsion 2000 times, 50% phoxim EC 1000 times, 25% quinoline EC 1000 times and other spray control. The use of pesticides should be repeated or updated to prevent insects from developing resistance. It is advisable to use the dew when dried in the morning from 8:00 to 11:00, and spray it from the top to the bottom to prevent the adults from escaping. Pay particular attention to spraying the liquid to the front of the blade. Plastic Spot Welding Machine, mainly suitable for automotive sound insulation cotton, mask ear straps, plastic parts and other products that need spot welding, its principle is that the generator generates pressure, and the transducer produces the same frequency of alternating current, converted from piezoelectric ceramics into mechanical vibration, and mechanical vibration produces thermal friction. Friction melts the contact point between the two parts, allowing the part to bond quickly. Plastic Spot Welding Machine ,Ultrasonic Plastic Spot Welding Machine,Handheld Ultrasonic Plastic Spot Welder Wuxi DIZO Ultrasonic Technology Company , https://www.dizosonic.com