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2. Take acid-base neutralization method to spray neutralizing agents to reduce phytotoxicity. For example, Bordeaux mixture or other copper preparations can be sprayed with 0.5 to 1% aqueous solution of lime due to the susceptibility of copper ions. If the organic phosphorus or pyrethroid pesticide is used in a wrong way or in excess, it can be sprayed with 0.5 to 1% lime water, washing powder, soapy water, etc., and then sprayed with alkaline fertilizer such as ammonium bicarbonate. It can not only neutralize phytotoxicity, but also play a role in topdressing.
3. Fertilizer water and foliar spray fertilizer. No matter what kind of pesticide poisoning, foliar spray fertilizer should be used, 0.3% urea plus 0.2% potassium dihydrogen phosphate or plant power-2003.100 times liquid spray, half a month, even spray 2 to 3 times can alleviate the phytotoxicity.
4. Cultivate hoes and turn the tree tray. The affected fruit trees shall be ploughed in time to turn the loose soil and turn the tree tray, and appropriate application of phosphorus and potassium fertilizer to improve soil permeability, promote root development and enhance tree resistance. In addition, timely pruning, cutting off dead branches, removing dead leaves, preventing some of the dead parts from being infected by pathogenic bacteria and causing new diseases.
How to remedy the orchard
1. Spray water on the tree in time. When the fruit tree is found to be phytotoxic, spray it on the tree immediately to dilute and wash off the pesticide attached to the foliage and branches, and reduce the amount of pesticide on the tree.
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