What should I do if I get a disease in rice? What diseases do you get from rice?

Rice sheath blight belongs to the soil-borne disease, after spring irrigation and hydroponic rake, the overwintering sclerotia floats to the surface, and after transplanting, it drifts to the bud sheath at the base of the rice plant with the water, and when the conditions are suitable, germinate the hyphae, extend and invade on the leaf sheath, first form an attached cell, invade through the stomata or directly penetrate the epidermis, and then continue to expand, and expand horizontally between the plants from the peak tillering stage to the booting stage, and expand from the lower part to the upper part from the late booting stage to the wax maturity stage.

Prevention and control: When harvesting, try to cut rice in the mud, after spring irrigation and hydroponic rakeing, salvage sclerotia, strengthen water and fertilizer management, do not apply too much and can not apply less, apply sufficient base fertilizer, and timely top dressing. Timely application, commonly used agents are Jinggangmycin, Moldycin, Propiconazole, Aimiao Sclerotinia and other drugs.

Hope it helps!

In fact, it is best to seek help from the local agricultural technology extension department to formulate a more reasonable solution according to the local geographical environment, climate, and many other factors, depending on the cause of the disease, the degree of disease, etc.

You can also ask for help, 12316" is a unified special number for public welfare services in the national agricultural system. In order to safeguard the legitimate rights and interests of farmers, facilitate the complaints and reports of the vast number of farmers, and more conveniently provide the "three rural" information services to the public, the Ministry of Agriculture, with the support of the Ministry of Information Industry, applied for and was assigned "12316" as a unified special number for public welfare services in the national agricultural system.

The use of a unified special number for public welfare services in the agricultural system can solve the problem of inconsistent public service numbers in the agricultural system in various places, and provide convenience for farmers and enterprises to complain, report or consult services. At the same time, it is also conducive to the integration of information service resources in the agricultural system, improving the ability of agricultural information services, and providing integration for the vast number of farmers and enterprises.

1. Standardized, convenient and accurate information services. This is an important measure taken by the agricultural departments to actively promote the openness of administrative affairs and promote the construction of a new socialist countryside with a good work style, and is also a concrete embodiment of solving the problems that the peasants are most concerned about, the most direct, and the most realistic interests.

In order to improve the level of agricultural information services, promote agricultural information services into villages and households, facilitate farmers' complaints and reports, and obtain "three rural" information services, we have fully cooperated with the telecommunications department in accordance with the requirements of the "four electricity and one station" project, opened the "12316" consultation, and opened seven expert seats for planting, plant protection, aquatic products, animal husbandry, forestry, agricultural machinery, and administrative law enforcement. At present, telecommunications** (including PHS) can dial 12316 (free of information fees). At present, an agricultural science and technology information database is being developed, which can provide farmers with intelligent voice consulting services.

Haha, there is no need to go into a long story, rice sheath blight mainly starts from the rice tillering stage, and the main thing is to achieve early prevention and control, shallow water and frequent irrigation. Timely resting of the field to maintain soil permeability, it is easy to get sick in years with high temperature and rain, and it is very easy to get sick in the fields with strong tillering without ventilation or excessive dense planting and insufficient light.

It must be prevented and treated early, the prevention and control agents are actually very simple, and there are a lot, such as Jinggang enzymes, love seedlings, and so on, the main thing is that the prevention and control should be early, and the management should be in place.

There are many reasons for the yellowing of rice, such as pests and diseases, pesticide damage, poisoning, nutrient deficiency and so on.

1. Toxic yellowing.

Yellowing of rice leaves caused by poisoning, in fact, it is very easy to judge, from the root system, the blackening symptoms are obvious, and there is a smell of rotten eggs, which smells obvious.

Then, compound fertilizer or spraying soil chef effect fertilizer can be applied to promote the rejuvenation of rice.

2. Nitrogen deficiency and yellowing.

Nitrogen deficiency is estimated to be the first problem that comes to mind, because once the leaves appear yellow, many people's first reaction is the lack of elements, indeed, nitrogen deficiency can cause rice yellow leaves, it is easier to judge, generally start to yellow from the old leaves, gradually spread like heart leaves, and finally develop into the whole plant yellowing, from a distance, with the same as ripe;

At this time, it is enough to apply urea, and it is recommended to start applying it in the early stage of yellowing, not until the whole plant is yellowed, it will be late.

3. Herbicide damage is yellow.

Yellow leaves caused by herbicide damage, light leaves generally appear yellow spots, and then rice wilts, wilting, serious directly lead to the death of the whole plant, herbicide damage is not much to say, if it is normal before the herbicide, not long after the herbicide, the above symptoms begin to appear, it is caused by the pesticide, if it is found earlier, spray water as soon as possible, reduce the herbicide concentration, if it is found late, the rice has withered, then there is no help.

4. Yellowing of bacterial diseases.

There are many kinds of bacterial diseases that can cause the yellowing of rice leaves, such as white leaf blight, bacterial stripe spot, bacterial base rot, etc., after infection, the heart leaves of rice will wither and shrink, if it is bacterial stripe disease, the diseased plant will be broken, there will be yellow "bacterial pus", if it is bacterial base rot, the diseased plant will be broken, there will be a rancid smell, bacterial disease, it is not difficult to prevent and control, commonly used agents are leaf dry azole, agricultural streptomycin sulfate, thiasesen copper, etc., once it is not good, the interval is about a week, and it will come again.

Summary. Hello, I am glad to answer for you, the conditions for the occurrence of rice blight (1) low temperature and humidity, high soil moisture content, lack of oxygen in the soil, poor root development, weak seedling growth, low resistance, and susceptibility to blight. Generally, the soil water content is less than 50%, the seedlings grow strongly, the root system is well developed, and it can resist the occurrence of blight; (2) The temperature difference is large and easy to get sick, and the temperature difference between day and night in the bed soil is large, resulting in the growth of the base of the rice seedling, the stunted development of the root system, and the rice seedling 2.

5. If the leaf stage continues to be low, 1-2 days after the cold wave, green wilt and yellow wilt will begin to occur; (3) Incomplete soil disinfection or alkaline soil is prone to disease. The application of alkaline fertilizers, such as urea and ammonium nitrate, can induce blight, and the application of acidic fertilizers, such as ammonium sulfate, stones, etc., should be promoted.

How can I make rice sick.

Hello, I am glad to answer for you, the conditions for the occurrence of rice blight (1) low temperature and humidity, high soil moisture content, lack of oxygen in the soil, poor root development, weak seedling growth, low resistance, and susceptibility to blight. Generally, the soil water content is less than 50%, the seedlings grow strongly, the root system is well developed, and it can resist the occurrence of blight; (2) The temperature difference is large and easy to get sick, and the temperature difference between day and night in the bed soil is large, resulting in the growth of the base of the rice seedling, the poor development of the root state and the large sail of the vertical system, and the rice seedling 2. 5. If the leaf stage continues to be low, 1-2 days after the cold wave, green wilt and yellow wilt will begin to occur; (3) Incomplete soil disinfection or alkaline soil is prone to disease.

The application of alkaline fertilizers, such as urea and ammonium nitrate, can induce the development of blight, and the application of acidic fertilizers, such as ammonium sulfate, stones, etc., should be promoted.

The environmental conditions suitable for the onset of the disease are as follows. (1) High temperature and humidity are conducive to the germination and invasion of pathogen spores, which often causes the outbreak of leaf blast at the seedling stage; (2) Excessive fertilization, especially excessive application of nitrogen fertilizer, causes the plant to "grow wildly", on the one hand, it reduces the disease resistance of the plant, and on the other hand, due to poor ventilation and light penetration, it is conducive to the invasion of pathogens and is also prone to disease; (3) Low temperature and rain, especially.

In July and August, low temperature and rain during the heading and flowering period of rice will reduce the disease resistance of rice and cause panicle neck blast. Rice blast fungus spreads with the help of air current, and the disease spreads rapidly, and the disease flow is closely related to horse climate, variety, fertilizer and water management, and physiological varieties of pathogenic bacteria.

Rice is susceptible to common diseases such as rice blast, white leaf blight, bacterial streak disease, rice sheath blight, and rice koji disease. Most are caused by bacterial or fungal infections. Especially in the booting and heading stages of rice, its resistance is the weakest, and it coincides with high temperature weather, which is very prone to various diseases, resulting in reduced yield and harvest.

In order to prevent rice diseases, we can prevent them from the following aspects:

1. Apply appropriate amount of nitrogen fertilizer

Nitrogen fertilizer can effectively promote the growth of rice and enhance the growth ability of rice. However, we should pay attention to controlling the amount of nitrogen fertilizer when applying nitrogen fertilizer. If the nitrogen fertilizer is excessive, the ineffective ramets of rice increase, and the density of rice field increases, it will lead to a decrease in permeability, loose and weak rice stem tissue density, and a decrease in stress resistance.

In turn, it affects the greening of rice, causes various pests and diseases, and causes undesirable phenomena such as lodging and empty straw, which reduces the seed setting rate of rice and causes the yield to decline.

2. Spray pesticides for the prevention and control of pests and diseases

Spraying pesticides in advance to prevent pests and diseases can largely prevent rice from pests and diseases. Rice with pesticides for pests and diseases can inhibit the occurrence of rice pests and diseases to a large extent and ensure the yield of rice. Rice without pesticides for pests and diseases may be infested by pests and diseases, resulting in reduced rice yields or even no harvest. The application of pesticides during rice cultivation is a normal situation.

It is also a means of guaranteeing stable and bumper yields. However, we also have to rationally apply new agricultural drugs with low toxicity and low residues.

3. Use silicon fertilizer

At present, farmers basically do not use silicon in crop production or use less and insufficient amount of silicon fertilizer, resulting in a significant decline in crop resistance and yield reduction, no resistance to diseases and insects, easy premature aging, bulk density, grain weight is significantly reduced, and the taste of grain deteriorates. Therefore, when planting rice, an appropriate amount of silicon fertilizer can be used to increase the stress resistance of crops.

Rice generally suffers from sheath blight, rice blast, rice koji disease, white leaf blight, flax leaf spot, and when the rice seedling stage will also appear to accompany the rational reed rotten seedlings, and the seedling stage infectious venereal disease will be suspended.

Generally speaking, they will suffer from rice sheath blight, rice koji disease, white leaf blight, rice blast, and bacterial stripe spot.

Rice blast, this disease is very difficult, when encountering high temperature weather, this disease will appear in rice.

The cause of yellowing and rust spots of rice leaves may be caused by medicine (damage), physiological yellow leaves, or potassium deficiencyThe specific causes and solutions are as follows:

First, the reason for the drug.

Did you take any medicine in the past few days, what kind of medicine did you take, and what was the dose? If there is a situation of spraying, the possible cause is related to the medicine (harm). In hot weather, spraying organic pesticides may cause this to happen;

If the rice is in the jointing and booting stage, the injured leaves are functional leaves (the so-called functional leaves refer to the top two or three leaves of rice, which are the main ones for yield formation), which will directly affect the yield, and high-quality foliar fertilizers such as potassium dihydrogen phosphate can be sprayed, such as potassium dihydrogen phosphate to help the plant recover.

2. Physiological yellow leaves.

Physiology can be divided into two aspects, physiological diseases or physical and other external factors, such as poor ventilation and light transmission in the field, poor root air permeability, some studies have shown that rice hypoxia will lead to rice plant leaf tips, leaf edges inward yellow, can be drained to dry the field, and then covered with water, increase root air permeability;

Physiological disease, the picture above looks like the rice plant has a slight rice blast, and it may also be bacterial streak disease, which can be foliar spray with rice blast + prochloraz.

3. Potassium deficiency. Potassium deficiency may also cause this to occur, excessive application of nitrogen fertilizer, insufficient potassium fertilizer, at this time is in the critical period of boot differentiation, a large amount of potassium elements move to the young spikelets, so that the leaf tip appears potassium deficiency yellow. Potassium fertilizer can promote photosynthesis of rice leaves, improve stress resistance, and enhance resistance to various adverse environments.

Therefore, the problem of yellowing of rice leaves can be solved by foliar spraying of potassium dihydrogen phosphate.

In general, rice is not yellow leaf disease, nitrogen deficiency, potassium deficiency, zinc deficiency, etc., there may be yellowing in the field, the cause of lack of nutrients is also a common one after all, there may be insufficient application of base fertilizer, or top dressing too late, in this case as soon as possible to supplement fertilizer, in addition to topdressing nitrogen, phosphorus and potassium, some trace elements, can be sprayed with foliar fertilizer supplement.

For bacterial diseases, spray fungicides, the two can be compounded better, try the effect.

The most beneficial method is to treat insects with beneficial birds and amphibians. The vast majority of birds in China feed on locusts, cicadas, psyllids, bugs, giddings, longhorns, and other pests. In rice paddies, frogs are also natural enemies of pests.

Breeding excellent disease-resistant varieties, carrying out appropriate water and fertilizer management, and regularly spraying pesticides on paddy fields to reduce the incidence of pests and diseases.

It is necessary to take regular insecticidal measures. For example, we grow rice in our family, and we usually need to kill insects twice from planting to harvesting. Pay attention to weed removal at all times.

You have to tell the whole disease, if it's all tiny dots, it may be flax leaf spot.

1 Seed disinfection Soak seeds with strong chlorine essence or Fumei double dressing.

2. Strengthen fertilizer and water management More organic fertilizer should be applied to sandy soil, lime can be applied to acidic soil, and nitrogen fertilizer and potassium fertilizer should be added to the nitrogen deficiency of grass seedlings or human manure, grass ash, etc. In terms of irrigation, it is necessary to avoid deep irrigation and long-term water accumulation, and to prevent flax spot disease caused by drought due to water shortage. There is no specific agent available for rice Honda when it happens.

If there are large dark spots, it may be rice blast.