How to prevent root disease? Root control measures
Roots are the collective name for the larvae of the fly. Most like to harm onions, garlic, leeks, celery, cabbage and other vegetables, seriously affecting the economic benefits of vegetables. Let's take a look at how to prevent it.
Root control measures:
1. Conduct a reasonable rotation
The plots with severe roots must be rotated to avoid rotation with onions, garlic and leeks; in addition, seeds should be sown as much as possible or transplanted with unharmed seedlings.
2, reduce the source of insects
(Winter time) Take the dead leaves, diseased leaves, and diseased plants scattered in the field out of the garden, and use them for deep burial, burning, or enzymes. When the free plots are planted in the coming year, remember to deepen the soil. , disinfect the soil.
(After harvest) After collecting vegetables such as onions, garlic, cabbage, celery, etc., it is necessary to deeply turn the soil layer, dry the soil, and disinfect the soil; for the harvested leek, you can sprinkle the appropriate amount of grass ash in the armpits, between rows or around. Effectively prevent adult worms from spawning, while also treating snails and mites.
3, pay attention to the use of fertilizer
The base fertilizer is applied with fully decomposed organic fertilizer to prevent the adult from spawning; the top dressing avoids the peak of the pest activity; watering and rainfall can affect the number of larvae.
4, liquid medicine watering
Grasp the key prevention and control period: when the field plant hazard rate is 10% (when the seedling tip is yellow, soft and gradually falls to the ground, it is determined as the root damage). After it has been identified as a root hazard, it can be treated with biphenyl thiabendamine (Zhubaofu), beta-cypermethrin, cyhalothrin, or dinotefuran, thiamethoxam and other nicotine pesticides.
5, spraying drugs to kill adults
Grasp the key prevention and control period: the peak period of adult activity, the adult spawning period.
Spraying control agents (such as avermectin, lambda-cyhalothrin, etc.) on garlic, onion, leeks, and field manure piles to kill adults to reduce the number of eggs and larvae.
6, sticky insect board traps adult
At the peak of adult activity, the sticky worm board is placed in the field, and 6 pieces per acre can not only induce adult worms, but also monitor the activity of adults.
7, sweet and sour liquid traps adult
With sweet and sour liquid, the ratio is 3 parts of sugar, 3 parts of vinegar, 1 part of wine, 10 parts of water, plus 0.6 parts of insecticide, put a pot every 30 square meters, change once every 5-7 days, every Add vinegar 1 time every other day.
The above is the prevention and control measures of the roots. The prevention and control of overwintering insect sources should not be neglected in the prevention and control of root mites.
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