Improper use of herbicides can threaten the growth of rice, so how to prevent and remedy herbicide d

1.Strengthen fertilizer and water management, top application of fast-acting fertilizer and watering. Promote early emergence and rapid growth of seedlings and enhance maize resistance.

2.The application of micro-fertilizer and plant growth regulator to promote growth.

3.Apply herbicide antidotes.

4.If the damage is too severe, replanting, replanting or destruction should be considered to avoid serious yield reduction or extinction.

To understand the different varieties of the best, but also to understand the toxicity, to properly control the concentration, but also to pay attention to the ratio, if such a pesticide damage should be watered in time, but also try to strengthen ventilation.

Be sure to choose the right concentration to use, and pay attention to the spraying time, if there is a problem, you should water it in time, so that it can be diluted well.

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.

If you realize the problem soon after applying the pesticide, you can rinse it with water. That is, use a sprayer to spray water directly on the rice seedlings. At the same time, it is necessary to drain the water in the paddy fields in time and re-irrigate the fresh water.

You should water more and wash some of these herbicides with water, so that it will not affect the growth and flowering of rice.

Watering should be carried out in time, and it is best not to use too many herbicides, or to fertilize, so as to ensure that there is not much damage to the rice.

The use of herbicides can only kill weeds without harming food crops, which is the conclusion of the selectivity of using herbicides, or the conclusion of the difference between the characteristics of crops and weeds, and also the conclusion that we conquer nature and defeat nature

Physiological differences: different green plants have different physiological needs for different types of herbicides, such as after the propanium is applied to the rice field, there is an enzyme in the rice seedling body, which can be converted into no harmful substances, which may cause it to be less easily poisoned. And the barnyard grass does not have these substances in the body, so it is poisoned and dies.

Shape differences: different types of green plants, different shapes, spraying, dose size, damage is different. The leaf area index of dicots is large, the dose is more, the bud eyes are exposed, and it is more susceptible to fertilizer.

The leaves of monocots are slender and erect, the dose is small, and the leaves also have a thin or siliceous layer of cuticle, and the bud eyes are covered by double leaves, so they are not susceptible to fertilizer.

Difference in rhizome intensity: Generally, the rhizomes of crops are deeper, while most of the rhizomes of wild grasses are shallow, and they are mostly distributed in the soil layer. Differences in planting and budding time using crops and weeds.

Use some herbicides with short time and good effect, take the medicine before planting or transplanting crops, and kill the grass before planting or transplanting. Or spray before budding after planting, which can effectively solve the wild grass in the first germination stage on the surface.

Classification of herbicides: Herbicides are divided into four categories according to the way herbicides act on plants and the movement of herbicides in the body of green plants. Selective herbicides:

This herbicide is characterized by obvious selectivity for the medicinal power of different plants, that is, it can kill some weeds, but it is ineffective against others; Safe for some crops, but harmful for others. For example, cover grass can have obvious effect on chemical control of grasses, but it is ineffective on broad-leaved weeds. And for broad-leaved plant crop safety.

The reason why the use of herbicides will not harm rice is because herbicides only have an effect on weeds, and it will not play a certain role in some rice, so there is no need to worry about whether herbicides will harm rice?

Different green plants have different physiological needs for different types of herbicides. For example, after the application of dialeos in rice fields, there is an enzyme in the rice seedlings that can be converted into harmless substances, which may lead to less poisoning. However, barnyard grass can be poisoned to death without these substances in its body.

Shape differences: Different types of plants have different shapes. When sprayed, they are subjected to different doses and injuries.

Dicotyledons have a large leaf area index, a large dose, and exposed bud eyes, which are more susceptible to fertilizer.

The growth of different plants is different, as long as the herbicide is used at the right time, it will not cause harm to the plant, which is directly related to the growth of the plant.

How to judge the occurrence of pesticide damage of rice herbicides? Rice herbicide pesticide remedy!

Herbicides are commonly used pesticides during rice cultivation.

However, when using rice herbicides, many farmers have encountered the problem of rice herbicide damage.

So how to judge the occurrence of pesticide damage of rice herbicides? How to remedy rice herbicide pesticide damage? Today, I will share with you the method of judging the occurrence of pesticide damage of rice herbicides and remedial measures, let's take a look!

1. Judgment of drug damage.

Rice sometimes has symptoms similar to herbicide damage due to root pests, nutrient deficiencies, or pests and diseases, but through investigation and analysis, it can still be determined whether it is a herbicide pest.

1. Judging from the application period and pesticide amount: if the time of pesticide application to control pests and diseases is 1 2 days after rice seedling planting (throwing), it is more sensitive, and sometimes pesticide damage occurs. Cha Jing.

High doses of individual pesticide products are also prone to pesticide damage.

2. Check the fertilizer water and soil conditions: irrigation after medicine is too deep (submerged growth point), which is easy to produce pesticide damage.

Check whether the plants have poor growth symptoms due to improper fertilization or application of unrotted organic fertilizer, or improper cultivation of grass straw and green manure.

3. Check for diseases and insect pests: Rice plants infested by rice tube thrips and rice root leaf beetles will become dwarf and clustered, and the leaf tips will be tubularly rolled up and turned yellow, and the fibrous roots will be short.

The symptoms of common dwarf trap shrinkage disease in rice are mainly yellowing and withering of leaves, dwarf plants, fading from the top of the leaf tips, and fragmented patches appear, but the leaf veins remain green, and the leaves often show obvious yellow-green stripes.

4. Look at the growth of seedlings before and after application: after the rice seedlings are inserted (thrown) and returned to green (seedlings) normally, if the abnormal symptoms occur after application, and the seedlings of other fields of the same seedling quality and variety grow normally, it may be a pesticide damage.

2. Remedial measures.

1. Re-insert (throw) seedlings: After diagnosis, it is confirmed that the seedlings are seriously damaged, and the yellowing of the seedlings accounts for more than 8 percent.

Operation method: drain the field water first, then discharge the turbid water after a light plow, and then insert (throw seedlings).

In recent years, the sowing and transplanting season is 7 15 days earlier than the traditional season.

It is generally 5 to 10 days from the discovery of drug damage to supplementation, and the seasonal contradiction is not prominent.

2. Strengthen fertilizer and water management and cultivating: If pesticide damage is found, the field water that has been applied should be drained first and filled with fresh living water.

The second is to cultivate the field, and turn the agent adsorbed by the topsoil into the deep soil to reduce the effect of the agent on the rice root.

2 3 days after the field is cultivated, 2 4 kg of imported compound fertilizer is applied per mu to promote root growth and accelerate growth.

3. Application of rooting agent: After drainage, cultivation and fertilization, 200 kg of rooting agent ABT with a concentration of 200 mg per mu can be applied, which has a good effect on promoting roots, and the number of roots can be increased by 25% to 40%, which can speed up the growth rate.

What are the staple foods in our daily life? White flour and rice are the two most common. But do we know how rice, that is, rice, is grown?

How to do weeding, and prevent herbicide hazards? Let's see how we do it.

With the progress of science and technology, herbicides are diversified, elementalized, when we choose herbicides, we must choose the right herbicide, not blindly choose, otherwise we will not have the effect of herbicide, which may lead to herbicide damage, we can consult relevant books to choose the right herbicide, to achieve the effect of herbicide. When we choose a good herbicide to use, we should dilute it reasonably and strictly in accordance with the proportion on the instructions, when diluting, first dilute with a small amount of water, and pour the mother liquor after dilution to achieve the purpose of full fusion of medicine and water. Followed by the application of pesticides, the application time is selected for the rice seedlings to grow for about 40 days spraying is the most appropriate, the rice seedlings at this time have a certain resistance, and the weeds have just been probed at this time, at this time the use will have a good weeding effect, to prevent herbicide damage.

When using herbicides, we need to use them scientifically and reasonably, otherwise it will lead to herbicide damage. What should we spray evenly during the spraying process, too much spraying will cause damage to nearby rice seedlings. Spraying too little will not have the effect of weeding.

If a herbicide damage occurs, we need to resolve the crisis as soon as possible and restore the growth of rice. Early detection, early detoxification, and drug damage should be immediately selected to reduce drug residues in the field. Second, strengthen the management of the field, when the occurrence of pesticide damage, timely detection, timely treatment.

It can be taken in time to increase fertilizer and supplement nutrients. More organic fertilizer is applied, organic matter has an adsorption effect on herbicides, and also has a decomposition and purification effect on some herbicides, so that the herbicides lose part of their activity. So as to promote the healthy growth of rice seedlings.

Restore the physiology of the victim and reduce the damage of herbicides.

The above are some of my views and tips on the prevention and control of herbicide pesticide pests in rice.

It is very important to pay attention to the amount of herbicide, which is very important, be sure to spray according to the proportion, and be sure to choose the right herbicide, pay attention to safety, and can be mixed with other drugs.

To choose the right herbicide, and pay attention to the effect of the agent, you can check the use method, strictly follow the instructions for use. You can understand the varieties of rice, pay attention to the use of herbicides, pay attention to the dosage of pesticides, and pay attention to the control methods.

It is necessary to water and fertilize in a timely manner, strengthen water and fertilizer management, be sure to prescribe the right medicine, remove insect pests in a timely manner, spray pesticides regularly, ensure sufficient light, do a good job of drainage and ventilation, and when spraying herbicides, we must avoid rainy or windy weather to avoid affecting the effect of herbicides.

1. Prevention of herbicide damage to rice

1.Use herbicides on the right road, such as herbicides used on crops such as soybeans, cotton, and rape, not for rice;

2.Under the premise of using special herbicides for rice, we must grasp the dosage, and we cannot increase the concentration or increase the dosage at will.

2. Remedies for pesticide damage caused by the use of herbicides in rice:

1.Timely irrigation to maintain a reasonable depth of the water layer;

2.If the medication time is not long and the pesticide damage is more serious, then choose the evening time to drain the water in the rice field, and then fill the water layer in time. [Note: Do not drain water during the day to prevent the seedlings from being scalded by the scorching sun.] 】

3.Spray gibberellin, grams per mu, preferably potassium dihydrogen phosphate, and 1% urea in the gibberellin solution.

After entering the rainy season every year, our province ushers in more rainy weather processes, and heavy rains occur frequently. Such weather conditions not only affect the normal operation and control efficiency of chemical weeding in rice, but also increase the risk of pesticide hazards. Farmers and dealers are there"Talk about grass color change", so the problem of weeding is complicated.

Recently, the author has communicated with many large growers and plant protection experts, and learned that the occurrence of herbicide pesticide damage in paddy fields every year is mainly due to the following factors.

Analysis of the causes of chemical herbicide damage in paddy fields? How to remedy the loss of drug damage?

1. Blindly increase the dosage.

<> due to the influence of rainy weather, it can not be removed and changed in time, especially the emergence of wheat interplanting, resulting in small rice seedlings and large grass age, in order to improve the control effect, they blindly increase the dosage or take the way of respraying, resulting in the occurrence of pesticide damage. In addition, weeds are becoming more and more resistant, resulting in excessive herbicide dosages, which also leads to the emergence of pesticide damage! Due to the resistance of weeds, farmers are also helpless, so they continue to mix various pesticides, hoping to achieve the purpose of efficient weeding, but once used improperly, it is easy to produce pesticide damage!

2. Poor drainage or untimely drainage in the field, and no timely backwater after application.

24-48 hours after the application of chemical weeding in paddy fields, the water has to flow back, which plays a particularly important role in the weeding process. When the temperature rises gradually, the water must be returned within 48 hours after chemical weeding. Backwater can promote the rapid death of weeds.

If there is no backwater after application, the roots of the weeds will continue to grow, and new leaves may regrow from dead roots. When we do the backwatering, the roots of the weed are in a state of anaerobic respiration and die quickly. If the water layer is well protected, it can play a good role in inhibiting the germination of weeds in the later stage.

3.The choice of herbicide is not reasonable.

In order to control the aging and malignant grasses in the field, we selected the xoxazole grass that was not registered on rice, but the dosage was not well controlled during use, which led to the occurrence of pesticide damage. At the same time, the herbicides that have been relatively hot in the past two years have common names with different contents of cyanofluoroester. "All-in"Farmers must be cautious when choosing this kind of pesticide to avoid shoddy weeding and ineffect, and excessive pesticide harm will be very serious!

It is recommended to choose a regular large company!