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How to save the damage of fruit trees
Improper use of fruit trees, prone to injury, resulting in leaves (fruit) spots, yellow, chlorosis, withering, leaf curling, deciduous fruit, such as shrinking clusters. Chronic phytotoxicity leads to the weakening of photosynthesis of fruit trees, delay of flower bud formation and fruit ripening, small size, deformity, and deterioration of flavor. The following measures should be taken to rescue them. 1, spray potassium permanganate. It is a strong oxidant and has an oxidative decomposition effect on many chemical substances. Spray 6000 times potassium permanganate solution, can effectively alleviate the injury. 2, rinse with water. Most chemical agents are not resistant to water erosion. If the application concentration is too high to cause phytotoxicity, sprayers should be used to fill the clean water and spray repeatedly to the leaves of the fruit trees to flush out the residual agent on the surface of the leaves. 3, disable similar drugs. Before the phytotoxicity has not been completely relieved, reduce the use of pesticides as much as possible, especially to stop the use of pesticides of the same type, so as not to aggravate the phytotoxicity. 4, more fertilizer water. After the occurrence of phytotoxicity in fruit trees, some quick-acting fertilizers should be added in combination with watering, and then cultivating loose soil can promote the normal growth and development of fruit trees as soon as possible. At the same time, spraying 0.3-0.5% urea, 0.2-0.3% potassium dihydrogen phosphate, etc., should be applied at the right time to spray new high-fat lipid-enriched film to maintain the nutrient status of fruit trees and enhance the root absorption capacity.