What are the safe tips for using herbicides when growing wheat?

For high value-added crop rotation, stubble safety is important. This kind of crops, especially peanuts, peppers and other high value-added crops, as far as possible do not use sulfonylurea herbicides such as benzensulfuron and other products. The author believes that even if there are some weeds such as azolone oxalate and 2methyl4chloride compound products (the ** rate does not reach 8%), it is 100 times stronger than a significant reduction in yield in the next crop.

In other words, stubble safety is much more important than some weeds**. In order to ensure the efficacy of this type of herbicide, please pay attention to the basic conditions such as no wind and sunny weather, and ensure that the water consumption per mu is not less than 60 catties. It is recommended to use Hansheng Dunlong wheat field special products, which are highly safe and can be used throughout the wheat growing season.

It must be prepared by the secondary dilution method: some people directly introduce the herbicide into the sprayer for convenience, and start spraying it with casual stirring, which is incorrect. This will likely result in a small portion of the herbicide at the bottom of the sprayer not completely dissolving, resulting in waste.

Spraying should be uniform: when spraying herbicides, we must spray evenly, do not miss spray or spray less, otherwise the weeds will be unevenly treated, and the control effect will be naturally not good; Do not respray, otherwise it is easy to cause pesticide damage.

Do not use herbicides before the 4th leaf of wheat and after jointing (before the 4th leaf stage, the wheat is delicate, low detoxification ability and immunity, and easy to produce pesticide damage), do not use wheat herbicides when the temperature is lower than 6 degrees (the low temperature effect is not ideal, the weeding effect is good from 10 am to 3 pm) Do not use herbicides when the soil is dry, do not use herbicides before and after heavy rain and before the arrival of cold air (especially wheat herbicides can not be used 7 days before the spring cold).

Wheat is planted late, the seedlings are relatively weak, you can first apply a little yield enhancer for 3 to 5 days and then choose to apply a little herbicide. If there are pigs and pig seedlings in the wheat field, you can use diflusulfamin plus chlorofluoropyroxyacetic acid. Lollipops are particularly abundant in wheat fields, and herbicides can be used.

For example: Sema, Priority, Kosema, Yongmai. If the wheat sowing date is delayed or the field with chemical weeding in winter is missed, in early spring, after the temperature rises, the wheat should be chemically weed as soon as possible before the festival.

There are also a lot of wheat planted in our hometown, and when using herbicides, we must pay attention to the common sense and technology of medication. At present, herbicides are mixed at will in serious production, which causes pesticide damage. For example, the mixture of methyldisulfuron with dimethyltetrachloride, pyroxone and emulsifiable concentrate herbicides, etc., usually cause pesticide damage.

The selection of mist machine spraying herbicides, repeated spraying, uneven mixing of pesticides, arbitrary increase in the amount of pesticides, too many mixed agents are usually the culprits of wheat pesticide damage, so it is necessary to master the basic pesticide scientific use technology, reasonable mixing under the guidance of local agricultural technicians, and timely and appropriate amount of uniform spraying, can avoid pesticide damage.

First of all, it is important to be targeted when choosing herbicides. Soil quality, temperature, wind and time of day, as well as any impact on crops other than wheat and weeds, are taken into account. Secondly, when using, the planting range of such a small area is basically manual operation, so we should wear protective clothing to isolate the direct contact between the liquid and the human body.

In addition, the amount of liquid medicine must be configured according to the standard configuration of the instructions, and cannot be increased or decreased at will. Finally, when spraying the solution, try to target the weeds and lower the outlet of the solution to achieve the best use effect, reduce waste and impact on other crops.

I am a specialist in agriculture, I will talk about the use of herbicides for planting wheat should pay attention to the fact that after the emergence of wheat, usually wheat seedlings are in the 4 5 leaf stage, and weeds are in the 2 4 leaf stage, which is the best time to use herbicides to control weeds. After the selection of herbicides, the specific operation, the use of herbicide methods is very critical, not only to use less dosage, to maximize the weeding effect, but also to be safe and reliable for wheat, no pesticide damage. When the specific operation, it is better to choose the weather, to choose a sunny day, a windless day, and a temperature above 10.

The soil moisture is suitable, neither dry nor waterlogged, so prepare a week in advance. The herbicide dilution must be diluted twice to make the agent evenly diluted and maximize the efficacy. When using herbicides, special protective agents can be added to prevent and avoid damage to wheat caused by improper use of drugs or unsuitable environmental conditions during weeding.

According to the properties of herbicides, foaming agents such as laundry detergents can be added to enhance the adhesion of weeds to the liquid medicine and improve the efficacy. When spraying, be sure to be careful and careful, do not omit, do not repeat, and spray evenly.

Follow the instructions for the size of the dosage and do a good job of your own safety protection.

Once the pesticide damage occurs, not only the yield does not increase, but also eventually causes a reduction in yield (serious direct failure), you can control in turn, find the cause, and then start remediation, the commonly used remedial methods are the following 4 kinds:

1. Hit more water, this method is suitable for early detection, such as you just applied herbicide this morning.

The next day, it was found that there was a problem with the wheat, or on the day of spraying, it was found that it was not right, so it was quickly sprayed with water, which could be more to dilute the concentration of the liquid and achieve the purpose of reducing the harm. In addition, the general wheat herbicides are acidic, and some lime can also be added appropriately to neutralize and neutralize, not excessive.

2. Spray foliar fertilizer, and the first one, after the water is finished, you can spray some good foliar fertilizer to increase some elements necessary for the growth of wheat and reduce the harm caused by pesticide damage.

3. Plant growth regulators.

It is commonly known as the "antidote", is there any effect? It also depends on the degree of harm caused by the wheat pesticide, if the symptoms are mild, you can spray some, if the pesticide damage is serious, it is not much better, the common gibberellin.

4. Timely destruction and replanting, which is mainly aimed at the more serious harm, that is, the wheat in the field has basically died, in this case, destroy it in time, replant other crops and reduce losses.

Causes herbicide damage to wheat.

2. The use temperature and period are wrong, and the wheat herbicide should avoid low temperature weather, generally between 10 noon and 15 o'clock in the afternoon, during this time period, the temperature is relatively high, and at the same time, it is necessary to choose sunny weather to spray, because spraying at low temperature is easy to cause pesticide damage.

3. The drift of the liquid medicine is normal when you apply the medicine yourself, but the medicine that the neighbor plays drifts to your own field due to wind or other reasons, which sometimes causes drug damage.

4. The herbicide is mixed unevenly, resulting in areas with high concentration and low concentration, such as in a spraying bucket, because it is not shaken evenly, the high concentration produces pesticide damage, and the grass with low concentration is not killed.

5. If there is a problem with the herbicide, the content and composition of the herbicide you buy will also cause pesticide damage.

Foreword: Autumn and winter are good times for winter wheat sowing, but there are often some weeds growing in the wheat field, so how to weed the wheat? The most commonly used means is wheat herbicides, what are the types of wheat herbicides?

1. Classification of weedsThe use of wheat herbicides should also take into account the type of weeds in the wheat field. The weeds in the wheat field are mainly divided into broad-leaved grasses and grasses, and we can choose the right wheat herbicide for these two weeds, so as to achieve twice the result with half the effort.

2. According to the classification of weeds in wheat fields, the wheat herbicides used to beat broadleaf grass are: thiensulfuron, ditetradibutin, benzsulfuron-methyl, azolexone, pyroxam, diflusulfam, dimethyltetrachlor, etc. Among them, metsulfuron-methyl is very destructive, so it will cause a lot of chemical residues when weeding in wheat fields, so it is generally not used in North China.

The main wheat field herbicides used in gramineous grasses: dimethyldisulfuron, xoxazole and alkynyl esters.

3. Problems that should be paid attention to In addition to the wheat herbicides used in different weeds, there are also problems that need to be paid attention to. Farmers should choose the right time when choosing wheat herbicides, and generally wheat herbicides should be selected in the winter wheat seedling growth period or the next spring wheat growth period. Weeding during this time will give better results and will also reduce damage to the wheat.

Weeding wheat fields in winter, because the temperature in winter is low, so at this time, wheat herbicides will remain in the soil of wheat fields, and the time is still very long, so it is not conducive to the growth of wheat. On the eve of winter, weeding wheat can effectively avoid the effects of temperature. At this time, the temperature is more suitable, so it can play a good role as a wheat herbicide.

The choice of wheat herbicide for weeding also needs to consider the dosage, which can not only effectively reduce the cost but also ensure the normal growth of wheat.

Green melon, isoproturon, zolinolate and pyritoxam, acetochlor, etc., the herbicidal effect of these agents is very good.

I know of stem and leaf herbicides, soil treatment agents, contact herbicides, conductive herbicides, selective herbicides and biocidal herbicides.

There are many, such as shima, methyldisulfuron, zoline, fluzosulfuron, etc., but it is also necessary to spray appropriately according to the variety of grass.

For example, benzsulfuron, ethylcarboxyfluorfen, fluzosulfur, two or four drops of butylene, paraquat and other ingredients, and these are more common herbicides in life, the effect is particularly good, when spraying must choose the root.

Many growers know that wheat herbicides.

It is more sensitive to temperature, and if the temperature is too low, it will affect the effect of weeding, and second, it may cause pesticide damage, so everyone is more cautious when using it.

If it is wheat sown in early to mid-October, when the wheat grows to 3-5 leaves (the best period for wheat herbicide spraying), it is basically around early to mid-November, when the weather is high and the temperature is about 20 degrees, which is more conducive to the effect of herbicides.

And some farmers who sow late wait until the 3-5 leaf stage of wheat, which is in late November or December, and the weather at this time is a lot of winter wheat.

The planting area has cooled down, such as Henan, where the helper is located, the temperature is now between minus 1 degree and 7 degrees, and it is accompanied by light rain, in this case, it is obviously not suitable for wheat herbicides.

According to many years of planting experience, the temperature when spraying wheat herbicides should be greater than 10 degrees at noon, the higher the better (most winter wheat planting areas, the temperature during this period will not appear more than 30 degrees of high temperature, you can rest assured), if you want to look at the average temperature, the average temperature of the day should be greater than 6 degrees or more than 8 degrees, and the higher the better.

1. It is recommended to apply medicine in sunny weather, after 10 a.m. and before 15 p.m.

2. Choose windless weather to spray, one is to ensure the efficacy of herbicides, and the other is to avoid herbicide damage.

3. When spraying herbicides, pay attention to the change of temperature, because herbicides play a role, there needs to be a period of time, in order to ensure the effect of herbicides, spray herbicides to see the weather forecast.

No rain is best for a week.

4. When spraying herbicides, the liquid should be mixed evenly, and in the process of spraying, do not miss or re-spray to ensure the final weeding effect.

In fact, in the actual planting process, temperature is only one of the factors that affect the efficacy of herbicides, and there are a variety of reasons that jointly determine the final weeding effect, such as soil moisture, weed resistance, herbicide selection and so on.

Wheat weeding. After the wheat 3-leaf and heart-leaf period, the weeds in the wheat field are all out, the temperature is above 10 degrees, and the average daily temperature is not less than 5 degrees.

On the use of wheat herbicide temperature question, in fact, there is no accurate answer, one is because of different herbicide formulas, the reaction at different temperatures is different, the other is because the production process of different herbicide manufacturers is different, the small helper inquired about some relevant information, about the temperature when used, summarized as follows 3 points 1, some herbicides on the packaging, will be marked with the temperature when used, such as 2 degrees, 3 degrees, 5 degrees, etc., what does this temperature mean, the highest temperature, the lowest temperature, Or the average temperature, did not say clearly, but the little helper understands, in general, this temperature refers to the lowest temperature of the day, for example, pyridoxamin can control most of the broad-leaved weeds and sharp-leaved weeds in wheat fields, when using the formula, the minimum temperature can not be lower than 2 degrees, in addition to the temperature of the day, in 2 or 3 days after application, can no longer continue to cool, if it drops below 0 degrees, it can not be used.