How to carry out soil sealing weeding before sowing seedlings?

It rains after the rice fields are harvested with herbs, which is a common occurrence, but the interval is short. If the impact is not too great after two hours, but it depends on what kind of medicine is being taken, whether it is fast-acting or slow-acting, and what is the drug's properties? If the pest control medicine will also affect the effect of the medicine within two hours, as long as it is not a rainstorm, the water will wash away all the medicine, otherwise it should be fine.

Because weeding is mainly to destroy the root system of the grass to achieve the purpose of weeding, the agent itself is dissolved in water in order to penetrate into the soil to reach the root system, the herbicide should be selected in the temperature is not very high time period to carry out, generally above 20, below 30 to spray! This temperature is best for weeds to absorb effective herbicide ingredients. You can choose to do it in the morning or in the evening!

In addition to this, there is also the dipanus against grasses and weeds. This kind of contact type herbicide is mainly based on leaf contact, the drug effect response is fast, about 2-3 days of application can show more obvious pesticide damage, such as leaf wilting, low hanging, similar to the appearance of burn-like plaques and other systemic herbicides The shortcomings of this kind of systemic herbicide are also more obvious, and the temperature after application is greatly affected by the application period and application. For example, if the temperature is relatively low when applied, the time of the drug reaction will be greatly prolonged.

Weeds that could have died in about 10 days.

It is best to beat the grass in the rice field in the morning and evening, there is dew in the morning and evening, and the herbicide drugs are suspended particles, and the light rain medicine is still effective two hours after weeding, so the rice field should also grasp the opportunity to fight, not rain every day can not be grassed. Herbicide spraying is affected by the temperature, and the higher the temperature, the faster the grass and trees will wither. At a temperature of 30°C, spray Roundup weeding, and you can see the grass turning yellow after three days, no later than a week.

If all the plants and trees wither and rot, it will take 20 days to a month.

The systemic herbicide will not be affected if it rains for a few hours after spraying, and if it rains, it will help the weeds in the rice field die quickly. Systemic herbicides include cyanofluoxate, bisoxalin, pentaflusulam, etc., and it is recommended to use systemic herbicides with good effect.

These weeds should be uprooted, and he should choose pesticides for simple spraying, which can quickly and easily deal with these weeds.

Don't choose particularly dry land, and we can use some drones to do closed weeding, which can improve efficiency.

a.You can sow seeds before the spring light rain, spray the sealing herbicide after the light rain, after the light rain, the soil is not so dry, there is a certain saturation, it is easier to make the spray droplets on its surface evenly distributed, but the rain can not be too large, the liquid medicine will slip away with the water, or be diluted by the open water, and settle into the soil with the water; b.Do not choose particularly dry land, do not spray on sunny or windy weather, these weather liquid is difficult to form a film.

If you urgently need to grab seeds, you should also spray water in advance to moisten the body surface before applying a sealing herbicide; c.Whether the drone can play closed herbicide, the answer is yes, but to be like the plant protection drone, it is indeed sprayed accurately, closed weeding is like a bag of rice, if there is a gap, no matter how many gaps, the rice will be scattered, but the drone closed weeding, the environmental requirements are indeed stricter, because the wind will be pressed, the dry soil will be blown away, and it will not be able to "form a film", so it must be carried out when the land is damp. When the drone is enclosed for weeding, increase the amount of spraying, slow down the speed, and try to make the pesticide evenly form a film on the soil surface.

First of all, it depends on what type of weeds are mainly present in the geography, for example, if the weeds in the field are mainly wild oats, soil treatment can be carried out with herbicide safety agents before sowing, which has a good control effect on wild oats. The plots dominated by wheat Niang and Corn can be used to kill stubble according to the requirements of purchasing pesticides before planting; In the post-sowing and pre-seedling soil treatment, herbicide safety agents can be used, which has a good effect.

First of all, the doors and windows should be closed, we must choose the right herbicide according to the planting situation, pay attention to the use of herbicides, pay attention to the efficacy of herbicides, spray on the ground comprehensively, you can mix fertilizer and soil together, and then water in time, and choose herbicides with better efficacy.

The land should be turned over with a weeding rake to remove weeds from it. The soil is then sprayed with chemicals. Pesticides can completely remove weeds from the soil.

Pro, acetochlor can be used as a sealing herbicide before germination after lawn sowing, and acetochlor can be used as a sealing herbicide, and the effect of weed control is very good. Acetochlor is a very strong pre-bud soil closed herbicide for the selection of wide envy species. Acetochlor can be absorbed by weed shoots and roots, forcing weeds to die by inhibiting the formation and operation of weeds' proteins.

Acetochlor has a very long validity period in soil, up to more than 2 months. Acetochlor can effectively control weeds such as beef tendon grass, horsetail, spring knotweed, barnyard grass, amaranth, dogtail grass, bicolor sorghum, autumn millet, quinoa, brachial grass, purslane, purple aconite, yellow fragrant aconite, duck plant, spiny yellow flower, dodder grass and so on. Acetochlor mainly absorbs weeds by bud sheaths, so spraying must be done before weeds emerge.

Acetochlor can only be treated as soil, not as weed stems and leaves. In the process of use, the dosage of acetochlor should be determined according to soil moisture and soil organic matter content, as well as according to different regions, different climates, and different seasons. Rapeseed field soil closed weeding, 50 grams of acetochlor can be used per mu, mixed with 40 50 kg of water, evenly sprayed on the soil surface after crop sowing and before weeds are unearthed.

If it is covered with mulch, spray the agent before covering the film.

Hello dear! Occlusive herbicides are chemical agents that prevent the growth of weeds, and they can be used after sowing and before budding to prevent weeds from interfering with the growth of the lawn. Before using an occlusive herbicide, you need to make sure that the surface of your lawn is free of any weeds or other debris.

You can then use an occlusive herbicide that is suitable for your lawn, such as glyphosate or glufosinate. These chemicals can effectively kill weeds while not causing any damage to the lawn. You will need to follow the instructions on the book and follow all safety regulations to ensure the safety of you and your lawn.

Additionally, you also need to note that occlusive herbicides are only a temporary solution, and you will also need to prune, water, and fertilize regularly if you want to keep your lawn healthy and beautiful.

Which brand of closure herbicide to use after lawn sowing and before budding needs to be chosen on a case-by-case basis. Here are some common lawn closure imitation herbicide brands for your reference:1

Shiseido Lawn Closure Herbicide 2Hello Lawn Grip Closed Herbicide 3Starlight Lawn Closure Herbicide 4

Beautiful Garden Lawn Closure Herbicide 5Green lawn lawn closure herbicideWhen choosing a lawn sealing hail shed closure herbicide, you need to pay attention to the following points:1

Choose the right lawn type: Different lawn types may require different occlusion herbicides, which need to be chosen on a case-by-case basis. 2.

Pay attention to how to use: Spray onto the lawn according to the instructions for use and dosage to avoid polluting the lawn and surrounding environment. 3.

Pay attention to safety: Wear protective equipment when using herbicides and avoid contact** and inhalation of harmful gases. Finally, it is recommended that you consult with a professional before using a lawn closure herbicide to understand the specific situation and take appropriate measures.

Seedlings can be planted after 3 to 5 days after applying the sealing herbicide.

For example, 4 precautions for weeding before corn seedlings:

1. Pay attention to the weeding time.

Blocking herbicides should be sprayed within 7 days after sowing corn after sowing and before most of the weeds emerge.

For example, acetochlor, an amide herbicide, is effective against annual grasses that have no soil, has very poor control effect on weeds that have emerged, and is basically ineffective against older weeds.

Therefore, the sealing herbicide must be sprayed within 7 days after sowing, if the weeds have been unearthed, do not spray the sealing agent, you can wait for the corn 3-5 leaves period, spray the herbicide after the stem and leaf treatment after the seedling.

2. Pay attention to the temperature and soil moisture during weeding.

If the temperature is too low, it will affect the activity of the herbicide, resulting in poor weeding effect, and in principle, the temperature during weeding should not be lower than 15 degrees.

At the same time, there are also requirements for soil moisture, such as the soil is too dry, the weeding effect will be bad, and if the humidity is too high, it is easy to cause pesticide damage.

3. Pay attention to the dosage used.

In principle, it can not be used in excess of the amount, and the excessive use is easy to produce pesticide damage to the corn, and the seedlings will be incomplete and uneven after the pesticide damage, so it will affect the yield of the corn.

Generally, the soil field should be used in accordance with the recommended dosage of the product label (the upper limit of the registered amount of clay, the normal amount of loam, and the severe sandy soil should not be closed for weeding), if it is a plot with high wheat and corn stubble and machine-harvested wheat stubble, the dosage can be increased appropriately.

4. Pay attention to the spraying weather.

When the wind reaches level 3 or above, do not spray again, otherwise the medicine mist will be blown away by the wind and reduce the efficacy of the medicine.

Before the rain, it is not suitable for spraying in the rain, at this time, the rain will make the medicine infiltrate or lose with the surface water, affecting the weeding effect.

It is recommended to spray when the ground is wet after rain, when the herbicide is easy to diffuse to form an effective film.

Abstract Hello, this can be used as a drug, suitable for soil sealing treatment in wheat field herbicides mainly include green melonon, isoproturon, acetochlor, benzsulfuron, thiensulfuron, etc. Among them, chloreron, isoproturon, acetochlor and other drugs are mainly used to control most species of grasses and weeds, and benzsulfuron-methyl, thiensulfuron-methyl and other drugs are mainly used to control broad-leaved weeds.

What herbicides are used for pre-emergence closure of wheat after sowing?

Hello dear, please wait a minute.

Hello, this can be used as a drug, suitable for wheat field soil sealing treatment herbicides mainly include green melon, isoproteron, acetochlor, benzsulfuron, thiensulfuron, etc. Among them, chloreron, isoproturon, acetochlor and other drugs are mainly used to control most species of grasses and weeds, and benzsulfuron-methyl, thiensulfuron-methyl and other drugs are mainly used to control broad-leaved weeds.

Precautions for the use of herbicides in wheat and the situation that herbicides cannot be used:

1. Herbicides can not be used before 4 leaves of wheat and after jointing.

Because the wheat seedlings before 4 leaves are relatively tender, and the immunity and anti-poison ability are very weak, it is easy to produce pesticide damage. After the jointing period, wheat enters the booting stage, this period is a sensitive period for wheat, and the use of herbicides is very easy to produce pesticide damage (especially dimethyltetrachloride) If herbicides are sprayed at this time, it will cause wheat not heading, deformity, etc., which has a great impact on wheat yield.

2. Do not use herbicides when the temperature is lower than 6.

The use of herbicides in cold weather will affect the efficacy of pesticides. Therefore, it is best to choose herbicides above the average temperature of 6 (10 a.m. to 3 p.m. about 3 p.m., the weeds absorb light, grow vigorously, the stomata are opened, and it is easier to absorb the solution, on the contrary, the temperature is low, and the absorption of the solution is not ideal.

3. Do not use herbicide jujube when the soil is dry.

The soil should be watered in time when the soil is dry, and the pesticide should be applied in time to ensure the effectiveness of the herbicide. When the moisture content is 40% to 60%, it is most conducive to the exertion of herbicide efficacy.

4. Do not use herbicides in bad weather.

Before the arrival of cold air and before and after heavy rain, it is a grinding and bad weather, if herbicides are used in these situations, it will not only affect the weeding effect, but also easily cause pesticide damage. Therefore, when using herbicides, it is necessary to pay more attention to the weather forecast and weather changes.

5. Herbicides should be sprayed evenly, and no respraying or missing spraying should occur.

The use of herbicides must be evenly sprayed, and the uneven treatment of weeds in places where there is no leakage or less spraying will greatly reduce the spraying effect. It is best not to respray herbicides, which can easily cause wheat yellowing and cause pesticide damage.

6. Do not mix herbicides at will.

The use of herbicides should be in accordance with the instructions or follow the agricultural material store, and do not mix with other herbicides, pesticides, foliar fertilizers, etc., so as to avoid pesticide damage or other adverse reactions.

7. Herbicides should be used separately from insecticides.

Organophosphorus and carbamate pesticides should be used only after an interval of 5 to 7 days, otherwise it is easy to cause yellowing of wheat and leaf burning. This is because organophosphorus pesticides will reduce the ability of wheat to reduce herbicides, and the subsequent use of herbicides can easily lead to pesticide damage.

8. Do not increase or decrease the amount of herbicides at will.

Spraying herbicides should be used according to the instructions, and agricultural materials stores can also be consulted. Do not increase or decrease the dosage at will, the dosage is small can not achieve the purpose of weeding, and the dosage is easy to cause pesticide damage.

9. The secondary dilution method should be carried out before use.

That is, before the application of the drug, the agent is diluted into the mother liquor with a small amount of water, and the prepared mother liquor is added to the medicine barrel during the application, and then the remaining water required is replenished, and the spray is sprayed after mixing.