Remedies for Spraying Mistakes in Vegetables
2020-10-23 12:17:42
When vegetables are sprayed in greenhouses, phytotoxicity may occur due to inaccurate dosage and unsuitable time. When you find misuse or phytotoxicity symptoms, take the following measures quickly to remedy.
First, spray water: After the wrong spray of chemicals or the occurrence of phytotoxicity, spray water quickly, wash the surface of the affected plant liquid. Damage caused by alkaline chemicals, vinegar when spraying water; phytotoxicity caused by acidic pesticides, can be added when the water spray 0.1% quicklime, to neutralize the drug, so that as soon as possible decomposition failure. At the same time, attention should be paid to ventilation in the greenhouse, and the temperature should be reduced to facilitate the emission of harmful gases.
Second, removal of the damaged foliage: After the leaves are damaged by phytotoxicity, the discoloration of the foliage should be promptly removed in order to control the penetration of the pharmaceutical agent in the plant body.
Third, timely watering: watering vegetables can increase plant cell water, promote metabolism, reduce the relative content of harmful substances. Can also dilute the accumulation of harmful substances in the roots of plants.
IV. Balanced fertilization: Appropriate top-dressing quick-effective compound fertilizer or foliar spraying of full-nutrition leaf fertilizer to promote seedling rejuvenation and improve the resistance to phytotoxicity.
5. Spraying Relief Agents: For example, 0.5% lime water can relieve the phytotoxicity caused by copper preparations; 0.2% soap solution can relieve the phytotoxicity caused by organophosphorus pesticides.
First, spray water: After the wrong spray of chemicals or the occurrence of phytotoxicity, spray water quickly, wash the surface of the affected plant liquid. Damage caused by alkaline chemicals, vinegar when spraying water; phytotoxicity caused by acidic pesticides, can be added when the water spray 0.1% quicklime, to neutralize the drug, so that as soon as possible decomposition failure. At the same time, attention should be paid to ventilation in the greenhouse, and the temperature should be reduced to facilitate the emission of harmful gases.
Second, removal of the damaged foliage: After the leaves are damaged by phytotoxicity, the discoloration of the foliage should be promptly removed in order to control the penetration of the pharmaceutical agent in the plant body.
Third, timely watering: watering vegetables can increase plant cell water, promote metabolism, reduce the relative content of harmful substances. Can also dilute the accumulation of harmful substances in the roots of plants.
IV. Balanced fertilization: Appropriate top-dressing quick-effective compound fertilizer or foliar spraying of full-nutrition leaf fertilizer to promote seedling rejuvenation and improve the resistance to phytotoxicity.
5. Spraying Relief Agents: For example, 0.5% lime water can relieve the phytotoxicity caused by copper preparations; 0.2% soap solution can relieve the phytotoxicity caused by organophosphorus pesticides.
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