Corn seedlings are often caused by improper use of pesticides.

At present, there are more weeds in the cornfields, and most farmers are accustomed to using chemical methods for weed control. This saves labor and time, and is also simple and convenient. However, there has been a recent reader response that when paraquat is used for weeding, the phenomenon of corn burning seedlings is serious, resulting in varying degrees of loss. Yang Yinfu, an associate researcher at the Institute of Agriculture, Northwest Agriculture and Forestry University, said that paraquat can't be sprayed on corn. It is used for weeding between corn rows. Many farmers directly spray the medicine on corn, which is bound to lead to death. Seedlings, and at this time the remediation can be done in time, we must take multiple measures to carry out comprehensively.

Strengthen field management

Strengthening field management is an important task. After corn seedlings are harmed by pesticides, they should timely cultivate and loosen the soil, chase fast-acting fertilizers and water them, and spray 1% to 2% urea or 0.2% to 0.3% of the leaf surface. Potassium dihydrogen phosphate solution, in doing so conducive to the normal growth of corn; In addition, it should actively control other diseases and pests of corn in order to improve the ability of corn to resist phytotoxicity. “If farmers are found to be in a timely manner due to improper use of pesticides, they can use fresh water and a small amount of washing powder to spray in less than one hour to minimize the level of corn damage,” said Yang Yinfu.

Use plant growth regulators

If the phytotoxicity caused by paraquat or the phytotoxicity caused by the absorption of conductive herbicides and phytotoxicity caused by the herbicide residues in the former crop, spraying Yunda-120 (natural brassin lactone) on maize seedlings ) Dilute 1500-fold hormone or foliar fertilizer (grasswood ash, 1% lime water, etc.) to activate and stimulate growth, and pay attention to watering immediately after spraying to dilute the residual drug concentration in the soil to ease the degree of injury. remedy. In addition, if it is predicted that soil residues of the former crops will endanger corn, active seeds may also be coated with activated carbon to prevent phytotoxicity.

Use antidote to relieve herbicide poisoning

"Herbicide antidote can reduce or offset the herbicide's toxicity to crops." Yang Yinfu said that detoxification agents generally use naphthalene anhydride, R-28725 two kinds, they are selective seed dressing protection agent, can be absorbed by the seed, And in the roots and leaves inhibit herbicide damage to crops, such drugs can protect corn from acetochlor, butachlor, dole and other herbicides.

Replanting and replanting in time

For example, if the corn fields are seriously harmed and the above measures fail to alleviate the damage, they can only destroy or replant other crops to avoid causing greater losses.

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