What are the precautions for using herbicides in vegetable fields?

Herbicides are inevitably used in the growth of vegetables or crops, so the following three points should be paid attention to when using herbicides.

First, the time of herbicide use.

Generally, most herbicides will be selected before sowing or after sowing and before germination, because at this time, chemical residues of herbicides will not remain on vegetables and vegetables will not be killed. For safety reasons, there are too many chemical residues on vegetables, which makes them easy to get sick. Pay attention to the time when you fight herbicides. In many cases, you should choose when the grass just grows, because at this time, weeds can be killed from the roots, and you can't wait until the weeds grow too luxuriantly, because the effect is not obvious and it is easy to fail. Weeding depends on the weather, too. Don't choose to fight before the rain, because it is likely that the rain will wash away the medicinal properties and even flow herbicide chemicals into other vegetable fields.

Second, spray herbicides evenly.

Different herbicides have different concentrations, but generally, before spraying herbicides, the soil should be treated to make it as flat as possible and keep it broken, so that weeds can grow. After spraying herbicides once, most weeds can be eliminated and weeding efficiency can be improved. Moreover, it should be shaken at any time during the spraying process to prevent the herbicide from precipitating, which leads to the high concentration in the back and can not achieve uniform weeding effect.

Third, choose herbicide varieties reasonably.

Because the crops planted in each field are different, we should also pay attention to the varieties of herbicides when choosing herbicides, because some herbicides will be spread in the soil for too long, which is likely to pollute the crops behind, resulting in crops not growing or even rotting roots. Moreover, try not to use one herbicide all the time in a vegetable field, because it will produce drug resistance, and several herbicides can be used alternately to improve weeding efficiency.

To sum up, we should pay attention to the above three points when using herbicides, and rational use of herbicides can improve the weeding effect.