What are the best days to spray rice? What is the best time to apply pesticides to rice?

Control objects: borborer, leaf roller, rice planthopper, sheath blight; Promote the rejuvenation and hair of grass seedlings.

The second medication: the seedlings entered the late stage of effective tillering and the early stage of jointing;

Symptoms of grass seedlings: sheath blight, dry heart of borrower, white leaves.

Control objects: sheath blight, leaf roller borer, borer, rice planthopper.

The third medication: the rice break is between 8-10%. Before September 20, the safe breaking period of late rice affected the breach by low temperature.

Prevention objects: borborer, rice blast, sheath blight, rice koji disease, rice planthopper, leaf roller borer.

In addition, there are two points to note when spraying:

1. It is the height of summer, and it is necessary to avoid high-temperature work at noon, which is easy to suffer from heat stroke or poisoning. Under normal circumstances, the dew can be sprayed after the dew dries in the morning, and it ends at about ten o'clock; Spraying after 3 p.m. stops when the dew comes up. On cloudy days without dew, it is best to bring some synergists to ensure that there is no rain within 3 hours, otherwise you need to re-fight.

Early rice and middle rice are earlier, and late rice is late. Under normal circumstances, flowering usually begins at 9 a.m. It is most prosperous at noon, and it blooms less after 4 p.m.

When a flower opens, it is about an hour from the opening of the slice to the time it closes.

Although I have never grown rice, I have heard my parents say that when the rice grows, if it is a pesticide, try the pesticide again when the tax is collected, the first pesticide prevents the leaves from being eaten by insects, and the second time it prevents insects from eating the ears of rice.

The first transplant or sowing is applied for 20 days, and the second, the rice vegetative growth period, during which the growth rate is fast.

Third, the drug is used in the rice break stage.

Fourth, the use of drugs at the panicle stage of rice.

Immediately tassel and ask when is the best time to apply the pesticide?

In general, pesticides should be applied 15-20 days after transplanting or 20-25 days after direct seeding. Pesticides were applied once at the end of rice tillering, rice breaking stage, and rice panicle stage.

It is best to spray pesticides between 9-10 a.m. or 4-6 p.m. On sunny days, you can spray after the dew dries in the morning, and it is not recommended to spray after the dew comes up in the evening, because the effect is not good. Cloudy.

There is no dew, and it can be sprayed without rain. It should be ensured that there is no rain within 3 hours after spraying, so that the efficacy of the drug can be guaranteed, otherwise it needs to be re-sprayed.

Early prevention: Rice planting should prevent various pests and diseases as early as possible, and do not miss the period. Grasp the key:

Some diseases only break out in specific areas, and plant protection practitioners can focus on prevention and control. Multi-compounding: In general, do not use a single agent, and use a compound agent as much as possible.

When is it good to plant rice.

Rice can be planted all year round, generally speaking, China's rice is mainly divided into early rice, middle rice, late rice, etc., these varieties of rice planting time are different, if it is in the middle and lower reaches of the Yangtze River.

Early rice is planted in March to April, medium rice is planted in April to May, and late June is planted in late June.

Methods of growing rice.

Before planting rice, the land must be prepared, and then the seedlings are raised, the seedlings are a very critical link, the seedlings can be transplanted after the success of the seedlings, the seedlings need to be selected before the seedlings, and the seeds need to be germinated, so that when the rice is planted, the yield will be higher, and the quality will be better.

Precautions for planting rice.

Planting rice needs to pay attention to the planting time, normally in February to June planting more, and we also have to prepare the land, to ensure that the soil is moist and flat, there are no clods, before planting rice, but also to fertilize the land, such as Trim water-soluble fertilizer, so that the nutrients in the land will be more sufficient, the most important thing for planting rice is temperature.

The best time is before 9 a.m. After 3 p.m., the effect of the drug increases dramatically, and the effect of the drug increases. Don't take medicine at noon.

The scorching sun at noon, the scorching rice or "rice barnyard rice" is not the best period of growth, and the medicinal effect cannot be completely absorbed. Affects the efficacy of the drug. If it is cloudy, it is best to take the medicine 3 hours before the rain, so that it will not affect the absorption of the effect.

The time for rice pesticides is generally better in the evening, when there are more insects, and then the sun is not very sunny, so the time is best at 6:00 or 7:00.

The best time for rice spraying is after rice jointing, this time is the peak period of diseases and insect pests, and it is necessary to use medicine in time according to the growth of rice, and try to avoid high temperature at noon when using medicine, it is recommended to choose before ten o'clock in the morning and after three o'clock in the afternoon, so that the effect will be better.

Rice needs to be sprayed with pesticides because there are pests and diseases, and the best time to spray pesticides is before 9 am and after 3 pm on a sunny day. This time point is the time period when the activity of pests is relatively high, and the effect of the drug is relatively large. Pay attention to the weather dynamics in time before spraying, if you encounter rainy days, the spray will lose its effect, and you need to spray it.

The best time to apply pesticides on rice is in the morning and evening, or between 9 and 11 in the morning, and between 5 and 7 in the evening.

The effect is best around noon, and the effect of spraying is more effective after the dew melts.

Come to you, when is the best time to apply pesticides to rice? I think that when rice is sprayed with pesticides, it is the time when rice is troubled, so it is better to use pesticides when it is troubled.

Rice pesticides, oops, this thing is so professional, I have to consult the local people.

Hello, I'm glad to answer for you, the best time to apply pesticides in rice is before 9 o'clock in the morning. After 3 p.m., the effect of the drug will be greatly increased and the effect of the drug will be improved. Do not apply the medicine at noon.

Because the scorching sun at noon is not the best time for growth, the medicinal effect cannot be completely absorbed. Affects the efficacy of the drug.

If it is cloudy, it is best to apply the pesticide 3 hours before the rain, so that it will not affect the absorption of the effect, and the effect will be better if the synergist is added.

When is it more appropriate to play the first time, when to play the second time, and when is it better to play the third time?

The third medication: the rice break is between 8-10%. Before September 20, the safe breaking period of late rice affected the breach by low temperature.

Now the main prevention of pests and diseases.

When was the first time rice was sprayed?

Rice is sprayed several times.

When is the first time to spray rice.

It is necessary to apply medicine according to the environment, and there is no fixed time.

It is best to spray rice on the day of the month.

The second spraying of rice is good in a few months.

In general, you have to inject four times in two nights: the fifth injection depends on the plot, but this is not insect love, but boredom.

In general, you need to get four shots in two nights: the fifth one depends on the action, but this is not insect love, but boredom.

Generally, you have to go through four injections in two nights: the fifth time depends on the plot, but it is not a worm feeling, it can only be a worm aversion.

Rice is generally sprayed on the day of the month as well.

The last time rice uses pesticides is best one month before harvesting, pesticides should be used less, the quality, yield and disease resistance of rice, or to prevention, especially in fertilizer, you can choose powder potassium dihydrogen phosphate for foliar spraying, so that rice is less sick and of high quality.

In the management of rice seedlings, it is necessary to pay attention to the coordination of the relationship between oxygen, water and temperature, 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.

During the week from sowing to emergence, the weather was cooler. The large and medium sheds are mainly sealed and insulated, and care should not enter and exit with cool breezes. 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.

When the seedlings are one and a half leaves, they begin to ventilate and refine the seedlings, and the squatting seedlings prevent them from growing. Generally, as the seedlings get bigger and the weather gets warmer, gradually extend the ventilation time and increase the ventilation openings. When the seedlings are one and a half leaves to two and a half leaves, it is an important time to prevent the seedlings from getting diseases, and it is necessary to focus on preventing the occurrence of bacterial wilt and blight.

Rice is easy to lack fertilizer after 2 and a half leaves, and the leaves of seedlings will generally turn 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.

If there are no insects on the rice, don't spray the last time, if you have insects, you can go to the place where the medicine is sold, and buy the insecticides for rice. That's it. You go to the place where you buy medicine and go to the people who sell it, and they know what medicine to buy.

In the process of planting, rice needs to be reasonably applied, that is, when the rice breaks about 10%. Because this time is the period when rice is epidemic with diseases and pests such as borborer, rice koji disease, rice blast, and leaf roller borer. This pest and disease must be prevented as early as possible and the best period should not be missed.

When there are pests and diseases in rice, we must prevent them as soon as possible, and do not miss the best time, so as not to affect the yield of rice. When applying pesticides to rice, you can choose to use drugs such as tricyclazole, rice blast, fluconazole, etc., and one agent can often target a variety of diseases.

When we use medicines, we should pay attention to the alternating use of multiple agents, and use compound agents as much as possible, so that the effect is better. When applying medicine, it is best to choose before 9 a.m., or after 4 p.m.

The best time to apply the spray is before 9 a.m. and after 3 p.m. on a sunny day.

Rice. Transplanting or live broadcast 20 days of pesticide application, this application is generally to prevent thrips, if it is medium rice, this application is also necessary to prevent two borers, thrips are generally used thiamethoxam, chlorpyrifos can, chlorantraniliprole can be used to prevent two borers; Rice likes high temperature, humidity, and short-day sock loss, and the soil requirements are not strict, but the paddy soil is the best. Celery.

Pesticides.

Under normal circumstances, pesticides should be applied once 15-20 days after transplanting or 20 days after direct seeding, at the end of rice tillering, rice breaking stage, and rice panicle stage. Spraying is best between 9-10 a.m. or 4-6 p.m. on sunny days, and it is not recommended to spray after the dew comes up in the evening, and the effect is not good. If there is rain within 3 hours after spraying, it needs to be sprayed again, otherwise the effect is not obvious.