The remedial measures that can be taken in the phytotoxicity of corn are mainly to improve the crop root environment, promote crop growth and enhance its resistance to stress. If farming measures are taken, the soil is loosened, and the ground temperature and soil aeration are increased. According to the growth of the crop, supplement some quick-acting nitrogen, phosphorus, potassium fertilizer or other micro-fertilizer. Foliar fertilization is better, and fertilizer effect is faster. It is also possible to spray some plant growth regulators that encourage and encourage growth, especially for root growth. But it must be applied according to the needs of the crop, otherwise it will be counterproductive. If there is water on the ground, it should be eliminated early; if pests and diseases occur, it should be prevented as soon as possible. In short, as long as measures are conducive to crop growth and development, it is beneficial to alleviate phytotoxicity and reduce losses.
1. For soil-treated herbicides due to the use of excessive doses, it is possible to use cultivating, continuous irrigation, drainage, repeated washing to alleviate phytotoxicity, and to apply a certain amount of lime powder when watering. The acidic herbicide is neutralized, whereby the residual agent is washed and discharged, and the residual herbicide content in the soil is reduced. At the same time, strengthen field management and enhance corn resistance.
Second, strengthen field management, and promote early growth of seedlings. In combination with watering, the application of decomposed human and animal excrement, ammonium bicarbonate, ammonium nitrate, urea and other quick-acting fertilizers to promote root development and regeneration; strengthen cultivating loose soil, break soil compaction, promote beneficial microbial activities, and accelerate the decomposition of soil nutrients, Enhance the ability of roots to absorb nutrients and water, so that plants can resume growth and development as soon as possible, reducing the damage caused by phytotoxicity. At the same time, it can also be sprayed with 1% to 2% urea or 0.3% potassium dihydrogen phosphate solution to promote the growth and development of the crop and restore growth as soon as possible.
3. Spray plant growth regulators or antidote to different agents. Plant growth regulators have a good stimulating effect on corn growth and development. At the same time, zinc, iron, aluminum and other micro-fertilizers and foliar fertilizers can be used to promote crop growth and effectively reduce phytotoxicity. Commonly used plant growth regulators are gibberellic acid, eucalyptus vinegar, sodium nitrophenolate.
4. Spraying antidote can reduce or eliminate the toxicity of grass to crops. For example, tea is a selective seed dressing protectant that can be absorbed by seeds to protect the corn from herbicides such as acetochlor, butachlor, and oxalic acid.
Fifth, timely remediation of deforestation. For those fields where the phytotoxicity is heavier and there is no remedy, it is necessary to hurry to replant and replant and make up for the losses.
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