Many farmers reacted with Xiaobian, saying that vegetables in greenhouses, vegetables, whitefly, thrips and red spiders, the disease is more serious, and the effects of several drugs are generally used, how to solve it? Is it wrong to use medicine? The following small series is introduced in detail to everyone.
In fact, the feedback from farmers is very representative, and many vegetable farmers have similar questions. In fact, it is not that the medicine is not effective, but the method is wrong. The medicine should be based on the living rules of the pests.
Hummer prefers a warm, arid environment, and does not like glare; so the proper time to control Hummer is most appropriate when morning and afternoon light is not strong.
Red spiders prefer a hot and arid environment, and the time of administration is appropriate at times of strong light.
The control time of whitefly is most suitable in the morning and evening, because the whitefly is not easy to fly in these two times, and the effect is good. High temperature at noon, active insects, poor drug use.
In addition, in addition to medication, you can choose to hang the sticky board in the greenhouse, choose the blue board for the hummer, and choose the yellow board to attract the white powder.
Medication reference
Some medicines only kill adult insects and do not kill eggs, which leads to the continuous growth of eggs after hatching; some medicines only kill eggs without killing adults, causing adults to continue to lay eggs, and the eggs continue to hatch after hatching.
We usually use such agents, imidacloprid, acetamiprid, nitenpyram, pymetrozine, thiamethoxam, these agents are adult treatment, so after a large adult drug will die, but the other three Insect eggs, nymphs and mites do not work well. Therefore, there will be adult pests in some time.
Biological control
When the average adult of whitefly mites in the greenhouse has 0.5-1 heads per plant, the artificially propagated larvae are released, and each adult or cockroach 3 to 5 heads are placed once every 10 days for a total of 4 times. It can also artificially release grass ridges, and a grass ridge can prey on more than 170 larvae of whitefly larvae.
Chemical control
Bifenthrin aqueous emulsion (registered crop cucumber), beta-cypermethrin smoker (registered crop protected tomato), high chlorine and buprofezin emulsifiable concentrate (registered crop protected tomato).
Although pests are common, they need timely prevention and control, otherwise they will seriously affect the yield of vegetables. Therefore, the above method of how to eat vegetable pests, the farmers quickly hurry to collect it.
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