When pesticides are used to control pests and diseases, due to improper application techniques, high concentration, misuse, inferior pesticides, etc., the crops may cause phytotoxicity, which may affect the growth of the plants, but the crops will not be harvested. Therefore, according to the nature of pesticides and the degree of phytotoxicity, the following "six methods" must be used for first aid.
1. Spraying water and washing pesticides caused phytotoxicity to plants and leaves, and found early, the damage was light, the pesticide did not penetrate into the plant, and the damaged plants could be sprayed quickly with water or 0.5% lime water, spraying 3-4 times repeatedly. It can wash away some of the liquid medicine and accelerate the decomposition of the drug, and cooperate with the fertilized loose soil to restore the growth of the crop.
2. Irrigation and detoxification For the phytotoxicity caused by some herbicides and some toxic soils, it can be decontaminated by drain irrigation or serial irrigation, which can reduce the degree of phytotoxicity. If plant dwarfism caused by herbicide is used, watering and disinfection should be carried out immediately in the initial stage. After that, interstitial irrigation and quick-acting fertilizer can greatly reduce the degree of phytotoxicity.
3. The subsidy promotes the phytotoxicity caused by the symptoms of medicinal spots, leafy leaves or yellowing of the leaves of the sprayed plant. It can be combined with cultivating loose soil, applying 5-6 kg of urea per mu, and applying appropriate amount of phosphorus and potassium fertilizer to increase plant nutrition and promote The root system develops, and the plant is quickly restored to life, and the effect on reducing the degree of phytotoxicity is quite obvious.
4. Spraying hormones to alleviate and interfere with the growth of crops, regulators, herbicides, in the event of phytotoxicity, spray "90" hormonal plant growth regulators to alleviate the degree of phytotoxicity. For example, rapeseed, peanuts, etc. are over-stressed by paclobutrazol, which seriously affects growth. It can be sprayed with 0.05% "Nine-two" solution, which can achieve good results.
5. Removal of phytotoxicity sites using insecticides with strong systemic absorption, often using methods of perfusion, injection, dressing, etc. on fruit trees. If the concentration is too high, phytotoxicity should occur, and the branches with heavy damage should be quickly removed. Leave a drug-free branch to prevent the drug from continuing to conduct and penetrate, and quickly fill the water to prevent the drug from continuing to expand.
6. Ploughing and replanting The phytotoxicity is serious, and most of the plants are dead. When the field is first exposed to the sun, then the medicine is washed, and then the ploughing is turned over, so that the residual pesticide in the soil has no effect, the crop is replanted. If local phytotoxicity occurs, first rinse the water, partially cultivate and replant the seed, and after the emergence or planting of the seedlings, apply the quick-acting fertilizer, so that the later crops catch the previous crop and reach balanced growth.
1. Spraying water and washing pesticides caused phytotoxicity to plants and leaves, and found early, the damage was light, the pesticide did not penetrate into the plant, and the damaged plants could be sprayed quickly with water or 0.5% lime water, spraying 3-4 times repeatedly. It can wash away some of the liquid medicine and accelerate the decomposition of the drug, and cooperate with the fertilized loose soil to restore the growth of the crop.
2. Irrigation and detoxification For the phytotoxicity caused by some herbicides and some toxic soils, it can be decontaminated by drain irrigation or serial irrigation, which can reduce the degree of phytotoxicity. If plant dwarfism caused by herbicide is used, watering and disinfection should be carried out immediately in the initial stage. After that, interstitial irrigation and quick-acting fertilizer can greatly reduce the degree of phytotoxicity.
3. The subsidy promotes the phytotoxicity caused by the symptoms of medicinal spots, leafy leaves or yellowing of the leaves of the sprayed plant. It can be combined with cultivating loose soil, applying 5-6 kg of urea per mu, and applying appropriate amount of phosphorus and potassium fertilizer to increase plant nutrition and promote The root system develops, and the plant is quickly restored to life, and the effect on reducing the degree of phytotoxicity is quite obvious.
4. Spraying hormones to alleviate and interfere with the growth of crops, regulators, herbicides, in the event of phytotoxicity, spray "90" hormonal plant growth regulators to alleviate the degree of phytotoxicity. For example, rapeseed, peanuts, etc. are over-stressed by paclobutrazol, which seriously affects growth. It can be sprayed with 0.05% "Nine-two" solution, which can achieve good results.
5. Removal of phytotoxicity sites using insecticides with strong systemic absorption, often using methods of perfusion, injection, dressing, etc. on fruit trees. If the concentration is too high, phytotoxicity should occur, and the branches with heavy damage should be quickly removed. Leave a drug-free branch to prevent the drug from continuing to conduct and penetrate, and quickly fill the water to prevent the drug from continuing to expand.
6. Ploughing and replanting The phytotoxicity is serious, and most of the plants are dead. When the field is first exposed to the sun, then the medicine is washed, and then the ploughing is turned over, so that the residual pesticide in the soil has no effect, the crop is replanted. If local phytotoxicity occurs, first rinse the water, partially cultivate and replant the seed, and after the emergence or planting of the seedlings, apply the quick-acting fertilizer, so that the later crops catch the previous crop and reach balanced growth.
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