What is a ground tiger? How to prevent and control the ground tiger?

What is a ground tiger? How to prevent and control the ground tiger? Also ask netizens with prevention and control experience to help introduce the land tiger and call the silkworm, the ground silkworm, the root-cutting worm. Common land tigers are small land tigers, earth tigers and yellow tigers. Therefore, the farming network has sorted out the details of the land tiger, which is listed below for netizens' reference. The difference between the earth tiger, the small land tiger and the yellow land tiger: 1, the general earth tiger, the adult body length is 20mm 23mm, wingspan 52mm 62mm, dark brown. Antennae filamentous for females and feathery for males. Larvae, mature larvae 40-60 mm long, dark brown body, two sub-topline dark grayish yellow. The epidermis is wrinkled and the particles are not obvious. The pupa, 23-29 mm long, is similar in size on both sides of the dorsal side. Egg, hemispherical, light yellow at first birth, gradually yellowish brown, grayish brown before hatching. 2. The adult of the small land tiger is 17023mm long, the wingspan is 40mm 50mm, and the body is dark brown. There is a "one" pattern in the outer central part of the kidney-shaped pattern of the forewing. The antennae are filiform in females and feathery in front of males. The body length of the mature larva is 37mm to 44mm, the body color is yellowish, and the epidermis is covered with large and small particles. Pupa, 18-24 mm long, marked on the back of the fifth to seventh ventral segments, larger than the side. Egg, hemispherical, milky white at first birth, gradually turning yellow, and blackening at the top before hatching. 3. The adult of the yellow tiger is 15-18 mm long, with a wingspan of 40 mm and a yellowish-brown body. The antennae are filamentous in female and feathery in front 2 and 3 in males. Larvae, mature larvae, body length 33-43 mm, body yellow, subtopline black; the larvae are wrinkled and the epidermis particles are not obvious. The pupa is 16-19 mm long, and there is a row of valves under the fifth to seventh abdominal throats. Egg, hemispherical, milky white at first birth, beige after birth, gray before hatching. The occurrence time of the ground tiger: 1. The overwintering larvae of the earth tiger began to endanger in April. The old mature worms built soil chambers 3-5 cm under the soil in June for diapause over the summer and feathered into adults in autumn. 2. The small land tiger generally moves around the beginning of March, and it is the peak period of the adults from late March to the first and middle of April. The adults of the small land tiger have phototaxis and chemotaxis, and they like to lay eggs in the low-lying and moist land where there are many weeds in the dicotyledons. The larvae are 6th instar, and the 1st instar larvae eat tender leaves day and night, spread after 3rd instar, and lurk under the topsoil near peanut lake seedlings during the day, causing harm at night. 3. The yellow tigers have 2-4 generations a year, with the larvae overwintering in the soil, pupating in spring in the M year, and the overwintering adults are in full bloom from late April to early May. In all the three kinds of land tigers, the larvae bite off the tender stems of peanuts, resulting in lack of seedlings and broken ridges of crops. The control methods of the ground tiger: method 1. Weeds are the main places for the ground tigers to lay eggs in early spring and the bridge for the larvae to migrate to crops. Spring ploughing and fine raking before spring sowing can kill the eggs and the 2nd instar larvae. Method 2. Using black light and sugar and vinegar solution to trap and kill adults. Method 3. 50% phoxim wettable powder is used to make poisonous soil and granules, which are scattered among crop rows in the crop seedling stage, and a better control effect can be obtained. Method 4. Spray 90% trichlorfon crystal, or 50% phoxim EC1000~1500 times or 1500 times pyrethroid pesticides before digging up the fields after crops. Method 5. Use 0.25 kg trichlorfon crystal to mix chopped fresh grass or broad bean stem and leaf 30-50 kg, poison bait 5 kg per mu, poisonous grass 15-20 kg, sprinkle among crop rows in the evening. What's the use of carbofuran? What is DuPont Kang Kuan?