Can pesticides and herbicides be used together in rice fields?

*Pesticides and herbicides are not recommended to be used together in rice fields**. Mixed use may affect the effectiveness of herbicides or pesticides, and may even cause pesticide damage to rice and affect growth.

For the management of paddy fields, it is necessary to pay attention to the coordination of oxygen, moisture, temperature and other conditions, especially after sowing to the emergence of seedlings within a week, the large and medium sheds are mainly sealed and insulated, and attention is not to enter and exit with cool breeze. At the same time, it is necessary to carry out watering reasonably, try to extend the first and second watering time, that is, do not water after the seedlings come out, and then carry out the first watering when the seedbed soil is hard to touch, and then watering when the bed soil is very dry.

In addition, ventilation and seedling refining is also an important part of management, generally as the seedlings get bigger and the weather gets warmer and warmer, gradually extend the ventilation time and increase the vent.

It is not recommended to mix herbicides with pesticides when applying herbicides after direct seedling, so as to avoid affecting the effect of herbicides or pesticides, and even causing pesticide damage to rice and affecting growth.

Rice herbicides can be mixed with insecticides, and organophosphorus insecticides and pyrethroid insecticides can be mixed with good effect. There is no adverse chemical reaction between the mixed varieties to ensure normal efficacy or synergistic effect.

Generally, it is not recommended to add insecticides and fungicides, especially organophosphorus insecticides, when using herbicides, and it is forbidden to mix them with herbicides.

Herbicide overdose can be remedied by:

1. Water spraying: When it is clear that the spraying dose of herbicide is too large, it should be sprayed with water in time to remove the residual volume of the foliar surface, reduce the concentration of herbicide in the crop, and timely irrigate to promote the transpiration of wheat and reduce the pesticide damage. Field irrigation water can also be used to continuously flush with fresh water, or combined with drainage to put lime and other methods to neutralize the acidic herbicides in the field and reduce the pesticide damage.

For the pesticide damage on the plant, the toxic residues on the plant can be washed away by sprinkler irrigation machinery or spraying equipment, and the poison attached to the leaves can be reduced.

2. Strengthen fertilizer and water management: when the pesticide damage is light, some leaves of crops appear brown spots, and the heart leaves are not dead, and some leaf losses can be compensated for by strengthening fertilizer and water management, and they can generally be recovered in a short time.

3. Spraying antidote or corresponding remedial agent: ferrous sulfate can reduce the pesticide damage of gram traces to wheat, and calcium polysulfide can make the residual simazine activity in the soil disappear. Due to the pesticide damage caused by auxin-type herbicides, gibberellin can be sprayed to reduce the pesticide damage; Due to the pesticide damage caused by contact herbicides, foliar fertilizer can be sprayed to promote the rapid recovery of crop growth, so as to relatively reduce the pesticide damage.

Herbicide. It can be mixed with pesticides, but the principle of pesticide mixing needs to be followed. Mixing principle: 1. After the two are mixed, no hydrolysis, alkaline hydrolysis, acidolysis or redox reaction will occur.

2. After the two are mixed, it will not affect the physical properties of the liquid medicine, that is, there will be no stratification, precipitation, emulsification, suspension rate reduction and other phenomena. 3. After the two are mixed, it will not increase toxicity and produce drug damage. 4. Organophosphorus and organosulfur pesticides cannot be mixed with copper-containing pesticides.

When is the herbicide sprayed with a good effect 1. If it is a season with low temperature such as winter, spring, and autumn, it is generally chosen to use the medicine from 10 am to 3 pm, and the temperature is more suitable at this time. 2. If it is a summer with high temperature, generally choose to take medicine before 9-10 am or after 4-5 pm. If the medicine is used at high temperature at noon, on the one hand, the water in the liquid medicine evaporates quickly, which is easy to lead to an increase in the concentration of the liquid medicine, resulting in pesticide damage.

On the other hand, when the temperature is too high, the stomata on the foliar surface of weeds are closed, and the absorption rate of the liquid medicine decreases. 3. Spraying herbicides is generally selected on sunny or cloudy days.

It is required that there is no wind or light wind (the wind force is below level 3), the temperature is above 10, and there is no dew on the leaves.

Spring spraying time or according to the season to choose, such as spring, autumn weeding, the afternoon dark is relatively early and the weather temperature is low, in this case it is best to choose about ten o'clock in the morning to spray herbicide, at this time the dew in the field is basically gone, after the herbicide spraying is also conducive to the herbicide absorption and utilization. Summer spraying while summer temperatures are higher and dawning.

It is also relatively early, basically the dew is basically dry at 9 o'clock in the morning, and the dew gradually starts at 7 o'clock in the afternoon, so it can be said that spraying herbicides at 9 o'clock in the morning and four or five o'clock in the afternoon are good choices. From a safety point of view, it is basically hot at 9 a.m. in summer, and transpiration.

It is relatively large, and if the herbicide is forcibly sprayed, its own safety can not be fully guaranteed, so it is more recommended to spray in the afternoon.

Wheat field herbicides are selective chemical agents, which are used to control broad-leaved weeds such as pig seedlings and Artemisia annua.

and camelina herba, 10 grams of 10% phenyiosolon or 1 gram of 75% superstar per mu, mixed with 40 kg of water to spray evenly, and the control effect can reach more than 95%. to grasses such as wild oats.

For the prevention and control of knotted wheat and candle grass, 40-50 ml of hussar or 20-25 ml of 3% shima per mu, and 50-100 ml of the product additives are mixed, mixed with 40 kg of water and sprayed evenly, and the control effect can reach more than 85%. <>

It is best not to use it at the same time, the general pesticide is to give vegetables or crops insect control and other effects, mixed herbicides will destroy crops and vegetables together, because they also belong to the scope of herbicide elimination, so it is not recommended to mix them.

You can check whether pesticides can be mixed with each other**, see which herbicide and which pesticide are mixed, whether it is feasible, and then you will draw conclusions.

Herbicides and other pesticides can be mixed and some cannot be mixed, as long as drugs of the same nature can be mixed, such as alkaline pesticides and alkaline pesticides can be mixed, and acidic pesticides can not be mixed.

It is best not to mix herbicides with pesticides, as this will reduce the effectiveness of herbicides and waste pesticides.

Hello, lactation herbicides and pesticides can not be mixed, herbicides are professional to do a good job of weather before use. They all belong to cosmetics together and may reduce their active ingredients.

No. The functions of the two are different. Herbicides are herbicidal and pesticides are insecticidal. After the herbicide and pesticide are mixed, spray on the crop to affect its growth, and spray it on the weeds, and the weeding effect is not good. Therefore, it is advisable not to mix them.

Hello, herbicides and pesticides are better to separate your use without too much trouble. It is better to apply herbicides first and then pesticides, so that the effect is better.

Herbicides and pesticides should not be mixed, one should be used and then another.

It's best not to mix them.

It's best to use it separately. Attention should be paid to coordinating the relationship between oxygen, water and temperature during seedling management, which is the key to the technology of dry breeding and strong seedlings of rice. The first is to prevent the temperature in the shed from being too high to breed weak seedlings, the second is to prevent low temperature and water shortage from breeding small old seedlings, and the third is to prevent the temperature from rising and falling to cause blight and cause dead seedlings.

1. Temperature conditions After sowing to the week of emergence, the weather is relatively cool. The large and medium sheds are mainly sealed and insulated, and care should not enter and exit with cool breezes.

2. Water management Try to extend the first and second watering time, that is, after the seedlings come out, do not water first, and then water the first time when the seedbed soil is hard to touch. After watering, water again when the bed soil is very dry.

3. Ventilation seedlings begin to ventilate seedlings when they are one and a half leaves, and squatting seedlings prevent growth. Generally, as the seedlings get bigger and the weather gets warmer, gradually extend the ventilation time and increase the ventilation openings.

4. Disease prevention at the seedling stage is an important time to prevent seedlings from getting sick when they are 1 and a half leaves to 2 and a half leaves, and it is necessary to focus on preventing the occurrence of bacterial wilt and blight.

5. Fertilization at the seedling stage Rice is easy to lack fertilizer after 2 and a half leaves, and the leaves of seedlings will generally be yellow and not so green, at this time, we should pay attention to fertilization once, you can use Yanwo potassium dihydrogen phosphate + Yanwo zinc fertilizer, the effect is better.

As long as you pay attention to the precautions of pesticides, confirm the requirements for the mixing of pesticide acid and alkali.