Cotton pest comprehensive control technology

First, cotton aphid prevention and control technology
1. The method of smearing stems: 40% omethoate or 50% monocrotophos EC is used for seedlings of seedlings in the seedling stage, and 1 to 5 times of the water is added to the liquid to smear the red and green cotton stems. Side, smear length 2-5 cm, not ring coating.
2, snack law: the use of omethoate or monocrotophos, dubbed 1:200-fold liquid in the growth point of each cotton seedling drops 2-3 drops of liquid. Method: Remove the rotary knob of the backpack type hand pressure sprayer, wrap 3 layers with gauze, and unscrew the switch by one third after adding the medicine solution. The medicine droplets can flow out.
When the cotton vine damages the leaf rolling rate by 5%, it is controlled by the stem-stalking method and the drop-center method.
3, urine washing mixture: use urea, washing powder (neutral), water according to the ratio of 1:1:100 preparation, stir and spray. The cotton leaves must be sprayed evenly and thoroughly on both sides.
4. Picking and treatment of pharmaceuticals: cotton aphid is a serious hazard, and 40% omethoate or 50% long-acting EC can be sprayed 1500-2000 times to prevent pesticides from being sprayed on a large area to protect natural enemies. It is strictly prohibited to abuse or abuse pesticides. , Forbid injection of carbofuran, 3911 and other highly toxic pesticides, pay attention to the safe use of drugs to prevent human and animal poisoning.
5. Yellow plate inducement: Using the yellowishness of cotton aphids, yellow plates were trapped to trap the winged pupae on the outside of the cotton field. Method: Use a 5030 cm yellow cardboard jacket with transparent plastic and butter the surface.
6. Concealed application of pesticides: Heavily growing cotton fields occur in cottonseed meal. Before pouring the head water, 3% carbofuran can be applied to 2-3 kg/mu, or 15% iron extinguished grams (Aldicarb) 350 g/mu. It is required that the ditch be 10-15 cm away from the cotton plant, and the ditch depth should be 10 cm. After the application, the soil should be covered with water.
7, poisonous soil fumigation: cotton growth in the middle and late, rolling leaf strain rate reached 10-15%, 80% dichlorvos emulsifiable concentrate EC 200 ml, diluted 4 kg of water, then add 20 kg of fine sand mixed, early in the morning, The evening ditch was thrown into the cotton field.

Second, cotton bollworm control technology
1, corn traps with chemical control: every morning beat the heart leaf moth or put in carp mouth carbofuran or phoxim, monocrotophos spray control.
2. Poplar branch to attract moths: use two-year-old, more than 10-15 branches of poplar leaves, about 65-70 centimeters in length, wilting bunched into a bundle (tight under pine), slightly tied down on the wooden strip Insert soil, vertical between cotton rows, height 15-30 centimeters beyond the cotton plant, insert 6-8 per acre, pack moth every day at dawn, or use a sprayer (with water) to spray wet sprigs, shake off The moth disappears. Change every 5-10 days.
3. Sex attractant moths: One per acre of cotton fields. Method: The cotton bollworm sex attractant is put on with fine iron wire, hang on the water basin, the lure is 1-1.5 centimeters away from the water surface (more than 200 meters is invalid), use the old urea bag to stand up to the field, the water basin is put Soil urea bags, 20-30 cm above the cotton plant (with the growth of cotton plants, the bags continue to increase the soil along with it). During the day, the water basin can be covered with hard paper shells to reduce the evaporation of water and enhance the quality of sex attractants. When water volume decreases, water is added to the water level in the evening. Change the lure every 10-15 days.
Sex attractant trapping and killing control, to achieve concentrated application of a large area in order to receive good results.
4, black light trapping. Black light traps were placed inside the cotton fields.
5. Chemical control: The main pesticides include phoxim, monocrotophos, methamidophos, and endosulfan. 100 cases of cotton aphids that reach 20 eggs or have a rate of 5% or more of the strains are treated with peach. When the egg aphid larvae hatched to the third instar larvae before the best period of chemical control, color back-support machine sprayer, and strive to get through evenly through the cotton plant.
(1) 50% phoxim EC 50 ml/mu, add water 50 kg, spray at 8-9 pm in the evening. Or 50% of monocrotophos EC 50 ml/mu, or 50% methamidophos EC 50 ml/mu, watered 40-50 kg evenly sprayed on cotton fields.
(2) 35% endosulfan (Saidan) EC, dosage 100-130 ml/mu, watered 45-60 kg spray.
(3) 2.5% kung fu emulsified pyrethroid pesticides such as 40-50 ml/mu and 45-60 kg watered. Heavy cotton fields occur in cotton leafhoppers, and the use of Kung-fu and other ester pesticides is prohibited.
(4) More than 44% of Insecticide and other complex preparations of 60 ml / mu, watered 45-60 kg spray.
The above-mentioned several pesticides are used alternately to prevent the resistance of Helicoverpa armigera.
6, to strengthen field management: timely control, prevent cotton plant leggy, increase phosphorus, potash fertilizer, control the cotton field irrigation late, can reduce the spawning of cotton bollworm. Early pruning topping, laying the top, took out deep outside the field, can take away the source of insects, reduce the amount of cotton bollworm.

Third, the control of cotton leafhopper (Red spider):
Hazardous cotton fields are selected from 1500-2000 times of special acaricides such as chlorpheniramine, bismuth sulphate, diphenhydramine, dicofol and so on, which can be controlled by spotting or controlling all fields.

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