Rice, as one of the most important food crops in China and even in the world, has a direct impact on national food security and farmers' economic income. However, in the process of agricultural production, due to the improper use of herbicides, especially the problem of excessive application, it may have a catastrophic impact on rice growth, and even lead to a significant reduction in yield or no harvest in severe cases.
Herbicides, as an effective farmland management tool, can effectively inhibit weed growth and protect crops from competitive pressure. However, any pesticide has its own appropriate dosage range, and once this threshold is exceeded, not only will the desired weeding effect not be achieved, but will cause harm to the rice itself. Excessive herbicides may be absorbed into the plant through the roots, or directly attached to the leaves, interfering with the normal physiological and metabolic processes of rice, such as photosynthesis and respiration, and then affecting its growth and development, and ultimately leading to a decrease in yield.
When a problem is found in a paddy field due to overuse of herbicides, a series of remedial measures should be taken quickly to mitigate the damage
First of all, immediately carry out flood irrigation. The aim is to use water to quickly dilute excess herbicides in the soil and scour them out of the paddy fields, reducing further uptake by the roots. Large-water irrigation cleans the soil and is a critical step in the initial response to herbicide overload.
Secondly, for herbicides that have been adhered to the foliage, they can be removed by moderate rinsing with water. However, in this process, it is necessary to pay attention to the moderate force, so as not to damage the leaves, lead to the invasion of new diseases or exacerbate existing injuries.
Third, in the case of herbicide poisoning, there are some specially developed plant antidotes on the market. Selecting the appropriate antidote according to the specific situation can effectively reduce the activity of herbicides in rice, thereby alleviating its toxic effects and helping rice to restore normal physiological functions.
Fourth, increasing the application of organic fertilizer is an effective means to promote the recovery of rice growth. Organic fertilizer is rich in a variety of beneficial microorganisms and nutrients, which can improve soil structure, enhance the vitality of rice roots, improve its ability to resist stress, and help damaged rice to return to normal growth as soon as possible.
If the damage to rice is still serious enough to prevent normal growth after the above measures are implemented, it is recommended to take timely replanting or replanting other crops to minimize economic losses. For example, crop varieties with a short growing period and strong resistance to stress can be replanted to achieve a harvest in the current growing season.
Finally, in the face of complex agricultural technology problems, farmers should seek help from local agricultural technology extension departments or professionals at agricultural material service stations in a timely manner to obtain scientific and reasonable guidance and help. Their professional knowledge and technical support can provide a strong guarantee for solving practical problems.
In conclusion, although the above remedies can recover the losses caused by herbicide overuse to some extent, prevention is always better than **. Therefore, in the daily production management, it is necessary to strictly follow the instructions for the use of pesticides and the guidance of technical personnel, and apply herbicides rationally to ensure that they can not only effectively control weeds, but also avoid the negative impact on rice itself to the greatest extent, so as to achieve the sustainable development of food production.