Prevention and control points:
A. Focus on the prevention and control of crop seedlings and before flowering, crop leaves appear as harmful tunnels and immediately use drugs.
B. Add an appropriate amount of sweet potato juice or sugar to the liquid to enhance the effect of trapping adult insects.
C. Choose a strong infiltration, high fumigation effect of the agent. At present, the better drugs are avermectin, chlorpyrifos, chlorpyrifos, etc., such as: Lesben emulsion, 25% insecticide double water, 1.5% abadin (Avi) emulsion, 5% antitabol (styrodialoprone) emulsion, 5% cascutine (fiproamide) emulsion
A. Aphids like to hide in the shadows such as the back of the heart leaf, and attention should be paid to spraying important parts such as young leaves, young stems and growth points.
B, melon and bean crops are sensitive to a variety of pesticides, should choose efficient and safe control agents, generally effective agents to imidacloprid, acetyl immonia, antidovir, kung fu mainly.
A. Select the starting period of nymphs and start the application when the population base of the insect is not large.
B. When spraying, pay attention to spraying the middle and upper part of the plant and the back of the leaves. If you need to control the hazard for a long time, you need to spray 2 times every 3-5 days, and the surrounding weeds also need to be uniformly controlled. Spraying time should be selected on sunny days and windy evenings.
C. Adult insects have a strong tendency to yellow, and adults can be trapped by yellow plates and coated with sticky shellac to kill adults, but they cannot kill eggs and are prone to recurrence.
D, it is best to choose insecticides with strong systemicity, such as: 24.5% aldhiolaline, acetamiprid, akta (thiamethoxine), alenopterazine, chrysanthemum emulsion, arverosol, kung fu permethrin or Uranus.
A: Agricultural control: weeding and pest control;
Booby-trapping of adult insects: combined with armyworms to trap adult insects with sugar, vinegar, wine booby-trap liquid or sweet potato, carrot and other fermentation solutions;
Trap larvae: Trap larvae with paulownia or lettuce leaves and go to the field early in the morning to catch them.
B: Chemical control
For larvae of different ages, different methods of administration should be used. Larvae are controlled before 3 years of age with spray, powder or poisonous soil;
After 3 years of age, there are broken seedlings in the field, which can be booby-trapped by poisonous bait or poisonous weeds.
Octathion, cypermethrin emulsion, 40% methyl isotylphosphate emulsion, 90% crystalline dimethoate, chlorpyrifos emulsion or microcapsule suspension
【Statement】For reference only, the actual operation must be based on the local climate, soil and consult local experienced agricultural experts! This article is from the Internet, not responsible for its authenticity, if there is infringement please contact Xiaobian (zzny12580).