Spray water. After spraying the medicine by mistake or causing phytotoxicity, spray the water quickly and wash the surface liquid of the affected plant. The phytotoxicity caused by the alkaline agent can be added with proper amount of vinegar when spraying water; the phytotoxicity caused by the acidic agent can be added with 0.1% quicklime when spraying water, which can neutralize the agent and make it expire as soon as possible. At the same time, it is necessary to pay attention to the ventilation of the greenhouse, and to reduce the temperature and temperature to facilitate the discharge of harmful gases.
Remove the damaged branches and leaves. After the leaves are subjected to phytotoxicity, the leaves that have turned green and discolored should be removed in time to suppress the penetration of the pharmaceutical agent into the plants.
Watering in time. Watering the shed can increase the cell water in the plant, promote metabolism, and reduce the relative content of harmful substances. At the same time, watering can also dilute the harmful substances accumulated in the roots of the plants.
Balance fertilization. Appropriately apply quick-acting compound fertilizer or foliar spray full-nutrient leaf fertilizer to promote rejuvenation of seedlings and improve resistance to phytotoxicity.
Spray the reliever. For example, 0.5% of quicklime water can alleviate the phytotoxicity caused by copper preparations; 0.2% of soapy liquid can alleviate the phytotoxicity caused by organophosphorus pesticides.
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