Rice ear neck blast often occurs, how to prevent and control rice ear neck blast?

Rice ear neck blast can be prevented and controlled by selecting disease-resistant varieties, strengthening management and key prevention and control, and rational use of drugs, which can significantly reduce the incidence of rice ear neck blast and ensure rice yield, and spray drugs in time after the discovery of this disease can also prevent the spread of the disease and minimize the loss of rice fields.

Choose disease-resistant varieties

If you want to prevent and control rice ear neck blast, you can choose disease-resistant varieties, those varieties marked with high susceptibility or susceptibility to rice blast must not be purchased, and those that are on the market for three to five years can not be purchased, because the new rice varieties will lose their disease resistance after 3 or 5 years on the market, and the disease will be high after planting, and the planting of rice can also avoid planting a single rice, so as to avoid the occurrence of rice ear neck blast.

Strengthen management and prevention of rice ear neck blast

Strengthen management when planting rice can also prevent the occurrence of rice ear neck blast, before planting, it is necessary to soak and disinfect the seeds of rice in the medicine to avoid being infected by pathogens, and then cultivate transplanting seedlings to improve its disease resistance, in addition to planting rice must be reasonable and dense planting to keep the field well ventilated, so as to prevent rice from being infected by pathogens, in addition to scientific topdressing to avoid excessive consumption of nitrogen fertilizer and increase the amount of phosphorus and potassium fertilizer.

Focus on the prevention and prevention of rice ear neck blast

When planting rice, we must delineate the high incidence area of the disease, especially those plots that often appear rice ear neck blast pay more attention, not only to choose two kinds of disease resistance, but also to reduce the application of nitrogen fertilizer, but also to drain water in time after rain, so that the field soil is exposed to sunlight, which can also play a certain role in sterilization, can prevent and control the occurrence of rice ear neck blast.

Rational use of drugs to prevent and control rice ear neck blast

Medicinal use can also prevent rice ear neck blast, but the medication must be reasonable, when the rice is in the growth period, you can spray diphenoxystrobin, spray once every 5 7 days, spray 2 3 times in a row can prevent the emergence of this disease, if it is found that there is a small area of rice ear neck blast in the rice field, you can also spray rice blast wettable powder in time, and continue to use the drug two to three times to prevent the spread of the disease.

After the rice enters the tillering stage, the shallow and wet irrigation technology is adopted to strictly control the depth of the water layer, strictly prevent deep water flooding, timely dry and aerate, promote root development, strictly prevent premature aging, improve the disease resistance and stress resistance of rice, and reduce the occurrence of diseases.

Agricultural personnel should strengthen the management measures among rice and strengthen the awareness of prevention.

Rice should be planted in fertile soil, water and fertilizer retention, and loose soil, which is conducive to the growth and development of rice.

After the rice is diseased, it should be pulled out in time to avoid harming other rice.

First, it is necessary to select disease-resistant rice blast varieties suitable for local cultivation; Second, we should apply fertilizer reasonably, increase the application of organic fertilizer, phosphorus and potassium fertilizer; Third, we should pay attention to reasonable irrigation, so that thin water is inserted, deep water is green, shallow water tillering, enough seedlings to dry the field, booting, heading to yellow maturity wet irrigation drainage and irrigation methods, to avoid deep water flood irrigation;

It is 3 to 5 days before the breach, during which the disease should be prevented and treated with good results.

About three days before the breach, this can be better grown and effectively controlled.

The break stage is a very good choice, the control effect at this time is very good, and it also helps to increase the yield.

It is because of the environment, because the environment is suitable for this situation, so it will lead to flooding.

This may be due to the unstable airflow of the rice, coupled with the unsuitable temperature during the irrigation period, the temperature is too high, and the water is not regularly watered.

1. The climatic conditions are suitable for the occurrence of ear neck blast, the field humidity is more than 90%, and the temperature is 20 30 suitable for the occurrence of ear neck blast. The key period of rice growth is August and September, when the rainfall is more, the temperature is low, and the sunshine hours are less, which has an adverse effect on the growth of rice, resulting in the serious occurrence of ear neck blast. Especially from late August to early September, when the rice is broken and headed, the Linyi rice area often continues to be rainy, and the climatic conditions of humid weather and insufficient sunshine are conducive to the reproduction and infection of pathogens, resulting in the rapid development and epidemic of diseases.

2. Large-scale planting of susceptible varieties, at present, there are no rice varieties that are completely resistant to ear neck blast, and all rice varieties planted in Linyi City have different degrees of ear neck blast, but the incidence degree of different rice varieties is quite different. The large-scale planting of susceptible varieties has led to the aggravation of rice ear neck blast year by year, especially under the condition of suitable climatic conditions, and some rice fields have even been extinct, resulting in large economic losses.

Panicle neck blast of rice. Tricyclazole, rice blast (Fuji No. 1), prochloraz, rice blastamide, thiophanate-methyl, azoxystrobin, chunleimycin, isorice blast, etc., were sprayed once on each foliar surface 3 5 days before the breach and at the full heading stage. At the same time, it is also necessary to control rice leaf roller, with emamectin, avermectin, chlorantraniliprole, indoxacarb, matrine, Bacillus thuringiensis, cotton bollworm karyotype polyhedrovirus, chlorpyramide, pyrethuron, etc.

Prevention and control methods.

1. Symptoms of rice ear neck blast.

Occurs on the ear neck, cob and branches, the disease becomes brown and necrotic in segments, the ear neck and cob are easy to break and become white spikes, the common people call it "pinching neck plague", the yield is reduced by 10-20%, and the harvest is not harvested.

2. The agent and period used in the prevention and control.

The key period for the prevention and control of panicle neck blast in rice is the 15% heading stage and the full heading stage of rice. (The full heading period in our area is generally around August 5-10).

3. The prevention and control agent for the prevention and control of rice ear neck blast is.

25% of 100 grams (prochloraz % tricyclazole, 40% Fuji No. 1, 40% gram blast powder, 40% rice blast.

4. The best time to spray.

That is, after the dew falls in the morning on a sunny day, and ensure that it does not rain within 10 hours of spraying, and spray the agent if it rains. The amount of water mixed with the agent should be sufficient, and the nozzle of the sprayer should be facing upwards and spraying from the bottom to the top, so as to improve the spraying effect. The prevention and control of ear neck blast should be prevented and controlled at least twice, and the medicine should be used in rotation.

Spike neck blast will be contagious, do not grasp the ** has a great impact on the yield, the most effective drug is the isorice blast net, once every 5-7 days, must be sprayed, or will not burn the leaves.

Answer hello, in the prevention and control of ear neck blast, we emphasize that prevention is the first, the main prevention agent is tricyclazole and other agents, while preventing ear neck blast, we must find the key point of prevention and control, it is recommended to use a drug 5-7 days before the break, the formula that can be used is tricyclazole + pyraclostrobin, tricyclazole + rice blastamide, oxime tebuconazole + tricyclazole, so that the formula can not only prevent ear neck blast, but also have a certain preventive effect on rice koji disease and sheath blight.

Hello, in the prevention and control of ear neck blast, we emphasize prevention, the main prevention agent for tricyclazole and other agents, while preventing ear neck blast, we must find the key point of prevention and control, it is recommended to use a drug 5-7 days before the break, the formula that can be used is tricyclazole + pyraclostrobin, tricyclazole + rice blast amide, oxime tebuconazole + tricyclazole, so that the formula can not only prevent ear neck blast, but also for rice koji disease, sheath blight have a certain prevention effect.

Ask if it can be cured if it has already appeared.

Answer, mainly with first-class drugs, appropriate amount of protective agents, first-class agents are rice blast, chunleimycin, prochloraz, etc., pyraclostrobin has both **, protective effect, the dosage should be sufficient, to be ruthless, such as a bucket of water with 2% Chunleimycin 100 ml or 40% rice blast 80 ml + 25% pyraclostrobin 20-30 ml spraying, it is recommended to use 2 buckets of water per mu, pay attention to the addition of silicone, volley fit and other additives.

Thank you Mr. Liu for your question, buy medicine and try it.

There will be a quick contagion, seriously affect the yield, hurry up with the rice blast net spray neck, to spray the rice ear dripping best.

The best time to control rice ear neck blast is at the beginning of rice heading, when the cells of rice ear neck are young and tender and easy to be invaded by pathogens.

Panicle neck blast is a common and airflow major disease on rice, and it is easy to occur when rice flowers and fill grains if the climatic conditions are suitable. After infection, with the reproduction and damage of the pathogen, the ear neck node dies, and the nutrient channel transported to the ear is blocked, thus forming a white ear or a deflated rice ear. Spike neck blast occurs in the year of the cherry blossoms, the yield is generally reduced by 10 20%, and the serious field is more than 30%, and even the harvest is out.

Once the ear neck is infected with rice blast, it has a great impact on the yield and quality of rice.

It is generally caused by high ambient humidity and temperature. It can be prevented by spraying antiseptic drugs regularly.

The reason may be that the fertilization is not proper and the varieties planted are not very good; It is necessary to apply fertilizer reasonably, do a good job in pesticide prevention and control, and irrigate reasonably.

The disease is usually caused by an alien infectious agent. Bactericidal drugs can be used**.

Plant protection information (strengthen the prevention of panicle neck rice blast).

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Rice ear neck blast is commonly known as "biting neck blast" and "hanging fish hook" in our county, which is the most important disease in the late growth stage of rice in our county. Especially in the severely diseased areas in the mid-levels, due to the abundant bacterial sources, coupled with the three-dimensional climate of the mountainous areas with severe susceptibility and foggy and dewy varieties, it is very conducive to the epidemic of panicle neck rice blast. It is expected that this year's panicle neck rice blast in our county will be moderately severe, and it will occur again in the mid-mountain rice area.

All localities must attach great importance to strengthening the prevention of panicle neck rice blast to prevent the epidemic of ear neck rice blast.

First, the appropriate period of prevention and control: based on the rice growth period, the first application at the end of rice booting (also known as the expansion bud stage, breaking stage), the second application at the full heading stage, it is expected that the low dam rice area will be at the end of July, and the mid-mountain rice area will be in the first half of August.

Second, the focus of prevention and control: glutinous grain, conventional varieties and mid-mountain old disease areas as the focus of prevention and control, firmly establish the idea of prevention first, seize the critical period of application of high-efficiency pesticide protection.

3. Prevention and control agents:

1) The first application should be applied with 20 grams (1 package) of 75% Fengdeng wettable powder or 20 grams (1 package) of 75% tricyclazole wettable powder or 100 grams of 20% tricyclazole wettable powder mixed with 60 kg of water.

2) In addition to continuing to use tricyclazole for the second application, you can also use 100 grams of 30% Xinkewen powder EC or 40% Fuji No. 1 EC or 30% rice blast EC mixed with 60 kg of water for conventional spraying.

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My stalk rice has ear neck plague, only to get sick, please ask the expert what medicine can be controlled, thank you.