When there are fewer pests, you can scrape them directly. You'd better have a pair of good eyes. You can find pests when you are laying eggs, and clear them in time.
Deltamethrin emulsifiable concentrate or fenvalerate EC can be sprayed when the disease occurs.
Trichlorfon powder or insecticide powder can be selected for the disease of seedlings, which can be directly scattered in the bottom of seedlings and soil, with each plant of 10-15g.
The leafminer is stubborn. It can be sprayed with trichlorfon powder or fenitrothion powder once every 2-3 days until it is completely eliminated.
Of course, spray can also be used to dilute the enemy's pesticide into 1000 times of solution and spray around the plants and leaves.
Are you familiar with the common pests at this time? When the plant has withered leaves and rotten stems, this kind of pest comes for taste. Use fenitrothion or baizhitu powder to spray on the soil surface, and pay attention to the even distribution.
Spray with 50% methyl sulphur phosphorus emulsifiable solution, and more insects can spray directly against pests.
Select elm leaves with leaves, soak them in monocrotophos solution for 10 hours, and then insert them next to sunflower at 2:00 p.m., 2-3 for each plant. Insects naturally dare not approach.
The simplest way is to spray dichlorvos solution.
Making poison soil. When the methyl 1605 powder is mixed with wet soil and sprinkled around the plant, the pest will be poisoned when it is close to it.
Spray with methamidophos emulsifiable concentrate 500 times, spray evenly when spraying, and sprinkle on the back of the leaf.
Sprinkle insect control powder on the soil surface, 10-15g per plant.
