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Second, irrigation water spray: If it occurs early, it should be sprayed with water immediately to wash the damaged plants. If it is a phytotoxicity caused by a systemic drug, the irrigation and lavage measures should be taken in time, that is, the flooding of the orchard surface should be carried out first, and then the horse water should be irrigated once.
Third, timely topdressing: After the fruit tree suffers from phytotoxicity, the growth is weak, and the foliar spray 0.3% urea solution plus 0.2% potassium dihydrogen phosphate solution, spray once every 15-17 days, even spray 2-3 times .
4. Loessing soil: It is necessary to carry out cultivating loose soil in the field in time, with a depth of 10-15 cm. The roots are artificially cultivated, and phosphorus and potassium fertilizers are added to promote root development and enhance the recovery ability and antiviral ability of the fruit trees.
Fifth, the right amount of pruning: cut off the dead branches, remove the dead leaves, reduce the occurrence of pests and diseases.
I. Neutralization treatment: If the phytotoxicity caused by copper sulfate ions in Bordeaux mixture, 400-500 times of rice vinegar can be sprayed. If the phytotoxicity caused by organophosphorus, pyrethroids, carbamate pesticides, etc. is misused or excessively used, 0.5-1% of lime water and washing powder solution may be sprayed for detoxification.
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