What kind of medicine can be used to kill tobacco green insects?

The main host plants of tobacco green insects are tobacco and pepper, and others include tomato, pumpkin, mandala, belladonna, acid pulp, Solanum nigrum and other plants of Solanaceae and Cucurbitaceae, which are very harmful, so what medicine can be used to kill tobacco green insects?

What kind of medicine can be used to kill tobacco green worms?

On the basis of accurate prediction, we should focus on the prevention and control from flower bud to young fruit stage. According to the control index (2% of insect plants), the control should be applied in time at the stage of 1st and 2nd instar larvae, that is, when the larvae have not been eaten into the fruit, and the larvae will be killed before fruit decay. You can choose 2.5% deltamethrin EC 2000 times, 2.5% cyhalothrin EC 2000 times, 4.5% cypermethrin EC 1500 times, 5% cypermethrin EC 2000 times, 35% Nongmont EC 2000 times, 10% chrysanthemum and horse EC 1500 times, 48% loxobenzene EC 1500 times, 21% germicidal EC 4000 times, etc., sprayed in the evening, each drug can only be used twice a season, rotating drugs to slow down the resistance of pests.

II. Agricultural prevention and control

Tillage and cultivation to reduce the source of insects. Winter ploughing and irrigation in the open field kills the pupae in the soil. In early spring, a row of early corn was planted on the edge of the green pepper field in the northwest. After the greenhouse model was removed, the adults flew to the corn plant to lay eggs, then removed the eggs and reduced the number of insects. Carry out crop rotation. Promote the use of early-maturing varieties to avoid harmful periods. Strengthen the field management, clean the countryside in time, remove the leaves with eggs in the full egg period, reduce the number of eggs, remove the insect fruit, and depress the insect population.

III. Physical prevention and control

1. Poplar branch moth trapping method: cut 0.6 meters long poplar branches with leaves, tie them to a stick every 10, and insert them in the field (slightly higher than the top of chili pepper), 10 for every 667 square meters, and replaced every 5 days, usually starting from the first and middle of April for 15 consecutive days. Every morning when the dew is not dry, use plastic bags on the handle to catch and kill adults.

two。 Black light trapping method: install a black light (220 volts, 40 watts) every 3.5 hectares, put a plastic basin under the lamp, and put a small amount of washing powder in the basin, which can kill a large number of moths from the early and middle of April when you start to see moths in the field in the evening to the next morning.

3. Electronic moth killing lamp traps and kills adults: that is, in unsheltered vegetable fields, one lamp (220 volts, 15 watts) is installed every 7 hectares, and a wooden stake is erected and buried deeply to avoid swaying by strong wind. The lamps are installed on the wooden stakes, and the bottom is more than 0.2 meters above the top of the plant. There are eye-catching warning signs or safety fences around the stakes, do not touch the power grid with your hands after electrification, to avoid electric shock, pay attention to line maintenance, so as to avoid electricity leakage. If the power grid is covered with pest remains, it must be cleared after a power outage and then take good care of the lamps and lanterns after they are used up this year and reused the following year. It can kill phototaxis pests such as vegetables, rice, cotton and fruit trees, and most of them are trapped before spawning.

The larval control of tobacco green insects should be relatively early, and adults will be more difficult to prevent, so it must be as early as possible.