Based on years of practical experience, a combination of chemical prevention and physical control should be adopted.
First of all, the choice of drugs requires egg-killing. The vegetable grower can use 240g/L spirotetramat (Muwant) suspension agent 1500 times and 50% diafenthiuron suspension agent 1500 times, spray 5~7 days, continuous spraying 2~3 times .
Second, the spray needs to be comprehensive. Due to the tenderness of the aphid, it is important to spray the growth point of the new leaf on the back and tender flowers, young fruit and other parts; and the aphids will be netted, the spray must spray; in addition, the aphid with the shaking of the plant easy Rolling off the ground, spraying the ground will also need to spray.
Finally, the high-temperature stuffy house inhibits reproduction. The suitable temperature for the growth and reproduction of aphids is 16°C～23°C. The high temperature will shorten the lifespan of larvae, while the temperature in the greenhouse is easy to raise. The temperature of cucumber and eggplant is high after watering. Therefore, after the watering of the greenhouse, the temperature of the greenhouse can be raised to 40°C, and the greenhouse can be shed for two hours, which can effectively inhibit the growth of the aphid.
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