Spring ploughing soon, wheat herbicide flying anti-dosing precautions

After the Spring Festival, the temperature rose and the spring plough began. The wheat in many places will also enter the rejuvenation period (from late February to early March). If you miss the weeding before winter, you must catch the best period of weeds in this wheat field.

First, apply under the right climatic conditions

Most herbicides are positive temperature coefficient agents. Do not apply at temperatures below 6 °C. It is best from 10:00 am to 3:00 pm, and do not drop below this temperature before and after herbicides.

Flying anti-plant protection spraying herbicides should be carried out in the absence of wind conditions, because the fog particles can be evenly distributed under the action of the downwind during the flying anti-spraying process. If the wind is affected, the fog particles will be unevenly distributed and will appear heavy. Spray leaking.

In addition, the use of drugs under windy conditions is likely to cause the herbicide mist to float, causing damage to sensitive crops around the environment. In particular, the ultra-low-volume spray mist of plant protection drones is easy to drift, so it is forbidden to use drugs on windy days.

If the soil is relatively dry when using the medicine, it should pay attention to increase the water consumption. If there is water, it will affect the efficacy of the herbicide.

Second, do not apply medicine when the wheat is sick

In recent years, wheat sheath blight, root rot, total eclipse and other species or soil-borne diseases frequently occur. Before applying herbicides, determine whether your own wheat seedlings are sick. If it is sick wheat, it is best not to apply herbicides.

Third, must be diluted twice

Some fly defense people save money by directly pouring hundreds of acres of herbicide into the total sink. Just picking up a branch and stirring it will start spraying. This method of medicine is very unscientific. Because most of the herbicide products will bring their own additives, the additives will play the role of penetration and synergy. They are usually thicker. If they are directly poured into the main barrel, they may sink to the bottom of the barrel, which may result in the inability of the additive to wrap the herbicide. .

This can lead to two consequences:

One is: the liquid has been finished, and some herbicides are still not opened at the bottom of the barrel, causing waste.

The second is: the concentration of herbicides in the wheat field that was just started is small, the dosage of active ingredients is insufficient, and the concentration of herbicides in the later stage is too large, which is easy to form phytotoxicity.

Therefore, when deploying the chemical solution in the fly-proof plant protection operation, it should be prepared in strict accordance with the second dilution method. The drug solution must be stirred to replace the medicine box to ensure that the pesticide preparation is dissolved evenly.

Fourth, avoid overdose

Fly anti-plant protection When spraying herbicides, do not spray a few times in thick grass and many places, or be afraid of wasting the last remaining herbicide in the place where there is more grass to reduce the dose and then spray one side, which can easily lead to herbicide phytotoxicity. Because herbicides are safe for wheat at normal concentrations, if they are too much, the wheat itself cannot break down and suffer damage.

V. Correctly treat the phenomenon of yellowing seedlings of herbicides

After some herbicides are applied, the wheat will have a short yellowing of the tip of the leaves. This is a normal seedling phenomenon, which is generally self-recovering when the wheat is green. This phenomenon will not cause the yield reduction, but will promote the wheat yield. It can prevent wheat from affecting its reproductive growth due to excessive nutrient growth, so don't worry too much.