Fruit tree remedy emergency treatment
2018-08-08 03:01:38
In the prevention and control of fruit trees and pests, if phytotoxicity occurs, it will cause leaf dryness, yellowing, whitening, and fruit drop, and the whole plant will die. Taking the following first aid measures can significantly reduce the phytotoxicity and restore the fruit trees to normal.
First, spray irrigation. Once the phytotoxicity occurs, the infected plant should be sprayed with water immediately. Rinse the residual pesticide on the leaf surface and reduce the pesticide content in the tree. If the pesticide is applied to the soil, the method of irrigation and washing should be adopted. For example, if the internal suction type pesticide is excessive, it should be immediately flooded with water and then irrigated 1 or 2 times to “wash the water†to wash the soil. Residual pesticides.
Second, spray neutralization. When the medicinal damage causes whitening of the leaves, the granular spray of 50% humic acid (first dissolved with a small amount of water and then added with sufficient water) may be used to spray the leaves to promote the leaves to turn green. If the copper ion in Bordeaux solution is phytotoxic, spray 0.5% to 1% of lime water to remove it. Due to the phytotoxicity of the stone sulphur mixture, 400 to 500 times of rice vinegar can be sprayed on the basis of water washing to reduce the phytotoxicity. When the dimethoate is improperly used, it can spray 200 times of borax solution 1 or 2 times.
Third, timely fattening. If the fruit tree is phytotoxic, the growth is blocked, the growth is weak, and timely application of nitrogen, phosphorus, potassium or thin human excrement can promote the new leaves of the damaged fruit trees and recover quickly. If the phytotoxicity is caused by acidic pesticides, some ash can be applied, and the phytotoxicity can be sprayed with 1% bleaching powder. For the phytotoxicity caused by alkaline pesticides, acid fertilizers such as ammonium sulfate may be added. No matter what kind of phytotoxicity, foliar spray 0.1 to 0.3% potassium dihydrogen phosphate solution, or 0.3% urea solution plus 0.2% potassium dihydrogen phosphate mixed spray, spray every 5 to 7 days, even spray 2 to 3 The damage caused by the phytotoxicity can be reduced.
Fourth, inject water. In the prevention and control of the bitter nature of the beetle, knowing the pests, etc., when the concentration of the drug is too high to cause phytotoxicity, the trunk should be injected with a large amount of clean water immediately. If it is an acidic pesticide, adding an appropriate amount of quicklime to the water can accelerate the decomposition of the pesticide.
Fifth, strengthen management. There are three key points in the management of medicated fruit trees: one is to carry out appropriate amount of pruning, cut off dead branches, remove dead leaves, prevent the spread of dead parts or be infected by pathogenic bacteria, and cause disease; second, cultivating loose soil, deep 10 to 15 cm, to improve Soil permeability, promote root development; Third, root dressing, generally with quick-acting fertilizer.
First, spray irrigation. Once the phytotoxicity occurs, the infected plant should be sprayed with water immediately. Rinse the residual pesticide on the leaf surface and reduce the pesticide content in the tree. If the pesticide is applied to the soil, the method of irrigation and washing should be adopted. For example, if the internal suction type pesticide is excessive, it should be immediately flooded with water and then irrigated 1 or 2 times to “wash the water†to wash the soil. Residual pesticides.
Second, spray neutralization. When the medicinal damage causes whitening of the leaves, the granular spray of 50% humic acid (first dissolved with a small amount of water and then added with sufficient water) may be used to spray the leaves to promote the leaves to turn green. If the copper ion in Bordeaux solution is phytotoxic, spray 0.5% to 1% of lime water to remove it. Due to the phytotoxicity of the stone sulphur mixture, 400 to 500 times of rice vinegar can be sprayed on the basis of water washing to reduce the phytotoxicity. When the dimethoate is improperly used, it can spray 200 times of borax solution 1 or 2 times.
Third, timely fattening. If the fruit tree is phytotoxic, the growth is blocked, the growth is weak, and timely application of nitrogen, phosphorus, potassium or thin human excrement can promote the new leaves of the damaged fruit trees and recover quickly. If the phytotoxicity is caused by acidic pesticides, some ash can be applied, and the phytotoxicity can be sprayed with 1% bleaching powder. For the phytotoxicity caused by alkaline pesticides, acid fertilizers such as ammonium sulfate may be added. No matter what kind of phytotoxicity, foliar spray 0.1 to 0.3% potassium dihydrogen phosphate solution, or 0.3% urea solution plus 0.2% potassium dihydrogen phosphate mixed spray, spray every 5 to 7 days, even spray 2 to 3 The damage caused by the phytotoxicity can be reduced.
Fourth, inject water. In the prevention and control of the bitter nature of the beetle, knowing the pests, etc., when the concentration of the drug is too high to cause phytotoxicity, the trunk should be injected with a large amount of clean water immediately. If it is an acidic pesticide, adding an appropriate amount of quicklime to the water can accelerate the decomposition of the pesticide.
Fifth, strengthen management. There are three key points in the management of medicated fruit trees: one is to carry out appropriate amount of pruning, cut off dead branches, remove dead leaves, prevent the spread of dead parts or be infected by pathogenic bacteria, and cause disease; second, cultivating loose soil, deep 10 to 15 cm, to improve Soil permeability, promote root development; Third, root dressing, generally with quick-acting fertilizer.
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