Can vegetables be sprayed in a rainy day, and can a greenhouse be sprayed on a rainy day?

OK. But pay attention to the following answers:

First of all, choose the weather to take the medicine. If the weather is not too cloudy, it is necessary to spray in the morning, and use a fine spray or a sprayer with a high degree of atomization to spray evenly. Do not spray too much on the tender shoots and delicate parts of the crop, do not spray directly at close range, do not drip with the liquid medicine, do not set large dewdrops, and ensure that the leaves are not wet before putting them in the shed.

Clause. 2. Reduce the concentration of liquid medicine or reduce the total amount of medication, and increase the interval between medications. At this time, according to the normal concentration of 80% of the drug ratio, it is best not to mix a variety of pesticides, but also to reduce the amount of spraying 1 4, so as to avoid pesticide damage.

In addition, it is also necessary to flexibly grasp the degree of foliar aging according to the length of cloudy days and the type of crops.

Clause. 3. After the yin.

Suddenly, don't spray right away. At this time, the foliar surface of the vegetable is due to prolonged photosynthesis.

It is not strong, the leaves are thin, yellow and tender, the fibrous tissue is weak, and it is easy to produce pesticide damage, so it should be ventilated and used again after two days of light. In this case, the old plant has wilted leaves, and it is necessary to return to it in time and spray warm water (sugar can be added to every 15 kg of water.)

150 g or potassium sulfate.

100 g) for slow seedling.

Clause. Fourth, the seedling damage at this time should be distinguished from air damage, fertilizer damage, and physiological diseases, so as to avoid misdiagnosis and lead to more serious disasters.

OK. However, the effect of spraying in rain is still not as obvious as the effect on sunny days.

Since it is a greenhouse, the scale will not be small, the technician will generally spray regularly, and will not wait for the sick to spray, generally about 20 days, depending on the situation, the weather is better and less.

Yes, but try not to hit because of the humidity.

It can be sprayed, but it is necessary to pay attention to the humidity, the humidity in the greenhouse is generally very large, and ventilation is required to cool down and dehumidify. On rainy days, the humidity outside is high, and at this time, pesticides are sprayed, and the humidity in the shed is greater, and the plants or animals in the shed are easy to get sick.

That is, you can apply medicine, but you should pay attention to excessive humidity.

It is possible to spray medicine when it rains in the greenhouse. Because there is no leakage in the greenhouse. You can hit it.

The greenhouse is closed, can be separated from the rain, rainy days in the greenhouse potions, because the rain will not fall directly on the plants in the greenhouse, so the rainy day potions will not affect the expected effect,

Yes, the greenhouse is sheltered from the wind and rain, and the spray will not be washed away by the rain on rainy days.

In the greenhouse on rainy days, of course, you can apply medicine, because the greenhouse is in German, so there is no problem with spraying, but your key should be hit on the leaves of the plant or the roots of the plant according to the situation, and it may be in the soil of the plant.

The spraying in the greenhouse has nothing to do with rain, and the greenhouse does not leak.

The inside of the greenhouse can definitely be sprayed, because it is isolated from the outside world.

The potion in the greenhouse has nothing to do with the weather and will not be rained.

The greenhouse is closed, and the weather has little impact on the plants in the shed.

Look at the specific instructions of the medicine, in the case of not letting out wind and rain, it should be possible to use more medicine.

I don't apply the medicine on a rainy day because I am afraid that the medicine will not work after the application and will be washed away by the rain.

On rainy days, he will not send medicine very well.

Different crops in different seasons of cultivation contains the best pesticide time is not the same, under normal circumstances, summer and autumn high temperature season vegetable greenhouse application time is best in the middle of the day around nine o'clock in the morning, in the afternoon at about four o'clock. The dew is dry at nine o'clock, and it is also the time when the pests are most active, so it is best to spray at this time. After four o'clock in the afternoon, the light begins to weaken, the temperature drops significantly, and some pests that appear at night begin to be active.

In winter and spring, the temperature is low, and the best time to spray is between 2:30 and 3:30 in the afternoon. The temperature in the greenhouse is low in the morning, and it is necessary to raise the temperature to increase the photosynthesis of vegetables, if the spraying will reduce the temperature and affect the growth of vegetables, choose to spray in the afternoon when the temperature of the greenhouse drops, which will not affect the normal growth of vegetables, and the pesticide will also have a long-term absorption process, and the insecticidal effect is undoubtedly the best.

So what are the times or weather conditions that are not suitable for spraying pesticides? In windy weather, pesticides will flutter around with the air and will not easily adhere to the surface of crops, affecting absorption. Cloudy or rainy days are not suitable because they will wash away the agent directly, not only will the crops not be able to absorb it, but it will also cause river water pollution.

The weather is not suitable for spraying at noon on a sunny day, because the high temperature will accelerate the decomposition of the agent, increase the volatilization, and shorten the validity period of the pesticide, which is very unfavorable.

In addition, the use of pesticides must be the right medicine, some pesticides are more humid, the better the effect, and some are too low the temperature will not have obvious effects. For example, wheat spraying should be at the heading stage, corn application can start at the seedling stage, and fruit tree spraying is best after the autumn harvest, which are all points that need to be paid attention to.

Source: bilibili

Hello, I am happy to serve you and give you the following answers: A: You can't enlarge the shed immediately, because pesticides are toxic and may cause harm to the human body and the environment.

The workaround and practice steps are as follows:1After the application of pesticides, the pesticide residues should be cleaned immediately to prevent the pesticide residues from polluting the greenhouse environment.

2.After the application of pesticides, the pesticide residues should be cleaned immediately to prevent the pesticide residues from polluting the greenhouse environment. 3.

After the application of pesticides, the pesticide residues should be cleaned immediately to prevent the pesticide residues from polluting the greenhouse environment. 4.After the application of pesticides, the pesticide residues should be cleaned immediately to prevent the pesticide residues from polluting the greenhouse environment.

5.After the application of pesticides, the pesticide residues should be cleaned immediately to prevent the pesticide residues from polluting the greenhouse environment. 6.

After the application of pesticides, the pesticide residues should be cleaned immediately to prevent the pesticide residues from polluting the greenhouse environment. 7.After the application of pesticides, pesticide residues should be cleaned immediately to prevent pesticide residues from polluting the greenhouse environment.

8.After the application of agricultural medicine, pesticide residues should be cleaned immediately to prevent pesticide residues from polluting the greenhouse environment. 9.

After the application of pesticides, the pesticide residues should be cleaned immediately to prevent the pesticide residues from polluting the greenhouse environment. 10.After the application of pesticides, the pesticide residues should be cleaned immediately to prevent the pesticide residues from polluting the greenhouse environment.

11.Pesticide residues should be cleaned immediately after pesticide application to prevent pesticides.

Everyone must pay attention, you can't apply herbicides just after the rain, it will have no effect. 1.It had just rained, and there were still some water beads left on the seedlings in the rice fields.

At this time, pesticides can not be used, which will affect the efficacy, there is no effect on the seedlings, and the effect of the weeds will be reduced if it has a great impact, and the weeds in the field will not die. 2.The higher the temperature, the herbicide is more conducive to being absorbed by weeds, but there is no premise that the temperature is not the higher the better, if it is too high, the liquid is evaporated, and the effect does not meet the requirements, such as dioxaether, when the temperature is greater than 35 degrees or lower than 15 degrees, it can not have the effect of weeding, and then for example, cyanofluoxate, it is a herbicide that is very volatile, so it is not easy to apply pesticides at high temperatures, comprehensive planting experience, Generally, the herbicide time is good in the afternoon, and after 16 o'clock, choose the right windless weather to spray.

3.After the medicine is noisy, it will not rain for four to six hours before it can have an effect. If it rains four to six hours before the end of the spray, it will also lose its effect, so you must grasp it well when spraying pesticides.

The vitality of weeds is very tenacious, stronger than that of crops. Weeds in the farmland compete with crops for fertilizer and light energy, encroaching on the growth space of farming, affecting the photosynthesis of crops. This in turn affects the yield of crops.

When spraying, we must grasp the time, master the temperature, and solve the weeds at one time.

Herbicides are applied in the greenhouse, and the rain outside will not affect the greenhouse, so it is effective.

In addition, the liquid medicine remains less on the leaves, resulting in insufficient amount of pesticides absorbed by the leaves, after the weather turns clear, some grass is yellow, and some are still green.

No heavy rain for at least two hours! Otherwise, it is invalid.

<> rainy days, you can fertilize vegetables, but the rate of fertilizer is very low, try not to choose to fertilize in rainy days. The soil will become soft after being soaked in rainwater, and people will leave a lot of footprints when they step on it, and the fertilizer will flow into the footprints in large quantities, which will easily lead to excess fertilizer in some places.

You can fertilize vegetables on rainy days, but the utilization rate of fertilizer is very low, try not to choose to fertilize on rainy days. The soil will become soft after being soaked in rainwater, and people will leave a lot of footprints when they step on it, and the fertilizer will flow into the footprints in large quantities, which will easily lead to the fertilizer in some places to tease the leftovers, if it is close to the vegetables, there may be fertilizer damage, or the growth of vegetables in the field is different.