Are there any precautions for using herbicides in vegetable fields?

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

1. The time of herbicide use.

Generally, most herbicides will be chosen before sowing or after the seeds are sown, when they have not yet germinated, because at this time, the chemical residue of the herbicide will not be on the vegetables, and the vegetables will not be killed. When playing herbicides, we should also pay attention to the time, many times we should choose when the grass has just grown, because at this time, the weeds can be killed from the roots, and can not wait until the weeds grow too lush to use the medicine, because the effect is not very obvious at this time, and it is easy to not work. When applying herbicides, it is also necessary to look at the weather, and do not choose to apply before the rain, because it is likely that the rain will wash away the properties of the herbicide, and even flow the chemicals of the herbicide into other vegetable fields.

Second, herbicides should be sprayed evenly.

Different herbicides use different concentrations, but generally before spraying herbicides, the soil should be treated to make the soil as flat as possible, and keep it a little broken, so that weeds can grow, but also can achieve a one-time spraying of herbicides, can kill most of the weeds, improve the efficiency of weeding. Moreover, it is necessary to shake it at any time during the spraying process to prevent the herbicide from precipitating, resulting in too high a concentration in the back, and it will not be able to achieve the effect of uniform weeding. <>

3. Rational selection of herbicide varieties.

Because the crops planted in each piece of land are different, we should also pay attention to the variety of herbicides when choosing herbicides, because after some herbicides are sprinkled in the soil, the effect time is too long, and it is likely to pollute the crops behind, resulting in crops not growing or even rotting roots. And try not to use one herbicide all the time in a vegetable field, because it will produce resistance, and several herbicides can be used alternately to improve the efficiency of weeding. <>

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

First, try to use drugs before seedlings. Chemical weeding in vegetable fields mostly uses soil treatment, but it must be used before sowing or before germination after sowing, and the weeding effect should be good at the initial stage of weeds. In this way, the contamination and residue of the agent on the vegetables can be avoided or reduced.

Second, the soil should be flat and moist. When treating the soil with herbicides, the soil requires the soil surface to be flat, finely crushed and moist, which can not only ensure uniform pesticide application, but also create favorable conditions for weed germination, so that weeds germinate consistently, so as to achieve the purpose of killing most of the weeds with one drug and improve the effect of weeding.

It is necessary to choose a safe and pollution-free one, do not choose one that is too toxic, and also pay attention to the time of spraying, and also pay attention to the scope of spraying, and do not spray a large area.

When weeding, be sure to divide the area in advance, be sure to think about what kind of herbicide to use, and then be sure to pay attention to the weather when using, preferably in rainy days, and then be sure to do a good job of protective measures, spray evenly, and don't expose your ** to the outside.

Summary. 1. Herbicides can be used in vegetable plots, according to different vegetable varieties and the length of the growth period, it is generally better to choose herbicides with appropriate effective periods to reduce the time of residual pollution and ensure safety.

2. Alternate medication: note that a single herbicide should not be used for a long time to prevent weeds from becoming resistant and improve the weeding effect.

3. Uniform spraying: chemical herbicides with poor wettable properties are prone to precipitation. Therefore, it is necessary to shake frequently when spraying to ensure uniform spraying, otherwise the concentration of the lower liquid is too high, which is easy to cause pesticide damage.

Yes. 1. Herbicides can be used in vegetable plots, according to different vegetable varieties and the length of the growth period, it is generally better to choose herbicides with appropriate effective periods to reduce the time of residual pollution and ensure safety. 2. Alternate medications:

Note that a single herbicide should not be used for a long time to prevent weeds from becoming resistant and improve the weeding effect. 3. Uniform spraying: stool macro chemical herbicides with poor wettable properties are prone to precipitation.

Therefore, it is necessary to shake frequently when spraying to ensure uniform spraying, otherwise the concentration of the lower liquid is too high, which is easy to cause pesticide damage.

40 50 grams of grass net wettable powder.

Buchlor EC 75 100 ml.

Oxamine EC 150 200 ml.

Nonder's WP 15 25 grams.

After planting lotus root for 7 10 days, or 1 2 days before the emergence of the lotus root, the temperature is above 25 (the water temperature is stable at 20), the field is kept in a 3 5cm water layer, mixed with soil or combined with chemical fertilizer sprinkled (15 kg of weedyl mixed with water spray or the original drug is thrown), and the water layer is maintained for 5 7 days after application, and then normal management.

In addition, herbicides such as moose, moxa, barnyard and other herbicides in paddy fields can also be used in aquatic vegetable fields.

Relevant information can be found on the Rural Information Network.

Summary. Hello, glad for your question. There are more weeds in the vegetable field, and it is advisable to use weeding, Guoer, and weedin for soil treatment after sowing.

What herbicide is better to use if there are a lot of weeds in the vegetable field?

Hello, glad for your question. There are more weeds in the vegetable field, and it is advisable to use weeding, Guoer, and weedin for soil treatment after sowing.

Lettuce patch. The herbicides commonly used in the pre-seedling treatment of lettuce are high herbicide, aniline, chloraniline, flumichlor, and chlorachlor.

Ask about custom messages].

Plots after herbicide application cannot be planted immediately, and generally need to be planted at an interval of 5-7 days, and the residue of herbicide in the soil also needs to be considered. The safety intervals for different herbicides are as follows:

1. Micao smoke.

After spraying (the dosage per hectare is exceeded, the plot should not be planted with corn, wheat, tobacco within 12 months, sunflowers should not be planted within 18 months, rice should not be planted within 24 months, potatoes should not be planted within 36 months, onions and melons, eggplants, peppers, cabbage, turnips, carrots, cabbage, cabbage should not be planted within 40 months, and sugar beets should not be planted within 48 months.

2. Nicosulfuron.

After spraying (active ingredient more than 60g hectares), the plot should not be planted with eggplant, pepper, cabbage, radish, carrot, cabbage, cabbage and other crops within 18 months.

3. Azinone.

After spraying, the plot should not be planted with sunflowers within 2 months, wheat within 4 months, rice within 8 months, and sugar beets, tobacco and onions within 18 months.

4. Sulfazolesulfachlor.

After spraying (active ingredient more than 48-60g hectares), the plot should not be planted with potatoes for 12 months, and eggplant, pepper, cabbage, radish, carrot, cabbage, cabbage for 26 months.

5. Chlorsulfuron.

After spraying (dosage of more than 80g hectares), the plot should not be planted with corn, wheat, tobacco and sunflower within 15 months, melons, eggplants, peppers, cabbage, cabbage, radish, carrots, cabbage within 36 months, potatoes within 40 months, and sugar beets within 48 months.

6. Chlorsulfuron.

After spraying (active ingredient more than 15g hectares), the plot should not be planted with eggplant, pepper, cabbage, radish, carrot, cabbage for 24 months.

7. Mesulfuron-methyl.

After spraying (the active ingredient exceeds hectares), the plot should not be planted with eggplant, pepper, cabbage, radish, carrot, cabbage, cabbage within 24 months, and potatoes should not be planted within 34 months.

Depending on the situation, the so-called powerful herbicide means that the effect is good. For example, the aboveground part of diquat quickly dries up after the drug, and glyphosate is slow but the root is removed, and the above two do not affect the planting crops. There is also a difference between closed weeding and dedicated.

Summary. A: There are two kinds of ah. Pyroxyflumethoxalin is a post-emergence selective herbicide, which has systemic conductivity, which is quickly absorbed and transported by weed leaves to the whole plant after stem and leaf treatment, resulting in weed death due to inhibition of meristems of stems and roots.

Its medicinal effect is fast, and the agent sprayed into the soil is easy to be absorbed by the roots, and it can also play a role in killing weeds. It has excellent control effect on annual and perennial grasses from post-seedling to tillering and early heading, especially for perennial stubborn grasses such as reed, white grass and dogtooth root. Highly safe for broadleaf crops.

It is also ineffective against broadleaf weeds such as broadleaf grass and sedge. The efficacy of pyroflumethoxalin is long, and one application basically controls the whole growth period and grass damage. The drug is reduced in the soil and has no effect on the planted crops.

The effect is stable at low temperatures. The difference between quinoxalin and pyrodioxalin.

There are still greens in the vegetable field, what herbicide is used to control the weeds without hurting the vegetables? l

A: There are two kinds of ah. Pyroxyflumethoxalin is a post-emergence selective herbicide, which has systemic conductivity, which is quickly absorbed and transported by weed leaves to the whole plant after stem and leaf treatment, resulting in weed death due to inhibition of meristems of stems and roots. Its medicinal effect is fast, and the agent sprayed into the soil is easy to be absorbed by the roots, and it can also play a role in killing weeds.

It has excellent control effect on perennial and perennial grasses from seedling to tillering and early heading, especially for perennial stubborn grasses such as reeds, white grass, and dogtooth roots. The loss of broad-leaved crops means that the crop is highly safe. It is also ineffective against broadleaf weeds such as broadleaf grass and sedge.

The efficacy of pyroflumethoxalin is long, and one application basically controls the whole growth period and grass damage. The drug is reduced in the soil and has no effect on the planted crops. The effect is stable at low temperatures.

The difference between quinoxalin and pyrodioxalin.

1. Artificial hoeing is a more reliable method of Fang Hui, whether it is peppers, eggplants, tomatoes and other vegetables, or cucumbers, beans and other vine vegetables, and then coriander and lettuce such leafy vegetables, artificial hoeing methods can effectively solve the problem of overgrown weeds. 2. Because farmers generally grow vegetables in small vegetable gardens, the place is not large, and it can be solved by manual work, but the large-scale planters can't keep up, so they have to use herbicides to weed. 3. The only bad thing is that it takes a long time to hoe the grass manually, because every time it rains, you have to hoe the grass once, otherwise the vegetable garden will be overgrown.

week. Generally speaking, the safety of herbicides mainly depends on the type of herbicide and spraying method. For stem and leaf herbicides, there is no systemic effect, and it is generally safer for a week, while for herbicides with systemic effect, the residual period is long, and the duration of its effect can even reach several years.

If the herbicide has a long lasting period, it is generally recommended to use herbicides for herbicides, and the safety of herbicides with additives is greatly improved, and some herbicides cannot be applied to the field, so the use of herbicides for weeding should emphasize standardization.

If it is a soil-sealing herbicide, it is best not to plant vegetables with seeds, because it can cause pesticide damage to newly unearthed vegetables, and the pesticide damage will remain for a long time, and even affect the next crop.

If it is a selective herbicide, as long as it is not for the vegetables you grow, you can choose to plant the vegetables on the same day, and if it is a herbicide for the type of vegetables you grow, you must wait until the end of the residual period before planting.

If it is an incidistric herbicide, it is necessary to look at its main components to decide, if it does not have an endogenous type, a few hours to a few days can be, if it has an endogenous type, it is best to wait for more than 2 weeks, and generally the herbicide residue can reach a month for a long time.

It is suggested that before planting vegetables, the residue should be degraded in advance, and weeding safety additives can be used, so that it is safer to plant after reducing the residue.

Introduction to herbicides.

Herbicide refers to a type of substance that can completely or selectively kill weeds, also known as herbicides, to eliminate or inhibit plant growth. Among them, sodium chlorate, borax, arsenate and trichloroacetic acid have a dead effect on any kind of plants, and their effects are affected by three factors: herbicides, plants and environmental conditions. According to the function, it is divided into incidal and selective herbicides, and most of the selective herbicides, especially nitrophenol, chlorophenol, and carbamate derivatives, are effective.

The development of herbicides in the world has gradually stabilized, mainly developing varieties with high efficiency, low toxicity, broad spectrum and low dosage, and disposable treatment agents with little environmental pollution have gradually become the mainstream.

The commonly used varieties are organic compounds, which can be widely used to control weeds, shrubs, trees and other harmful plants in farmland, orchards, flower nurseries, grasslands and non-arable land, railway lines, rivers, reservoirs, warehouses and other places.