What exactly is an earth borne disease? How can it be cured?

The planting pattern is single, the soil is not disinfected, the pesticides are used improperly, and the fertilization is improper. The way to do this is to avoid planting a single pattern, disinfect the soil, and use water and fertilizer wisely.

This disease is actually a bacterial infection, because there is a special insect in the soil that hurts the whole land to cause this situation, the best way to ** is to find the right medicine **.

Soil-borne disease refers to a pathogen that mutilates plant roots as dead animals live in the soil. First of all, it is necessary to strengthen the elimination of pests and diseases, strengthen management, cultivate strong seedlings, pay attention to the hygiene of fertilizers, and regularly loosen the soil.

1.The soil layer is solved.

From early to mid-July, the continuous high temperature of the solar heat and the certain environmental humidity of the soil layer itself, as well as the fumigation of medicines, were used to carry out disinfection and sterilization in the shed. The specific steps are, chopping rice, 1000-2000kg of straw orange stalks + 15kg urea solution ploughing, making furrows, filling with enough water, and then covering the plastic film, and at the same time closing the greenhouse to solve the problem of 20 days.

2.Disease-resistant varieties are used.

The use of disease-resistant or disease-resistant species can greatly reduce the level of damage caused by soil-borne diseases.

3.Implement crop rotation.

This is also the most economical and efficient countermeasure to prevent soil-borne diseases, and the effective rotation between crops, especially the rotation of water and drought, can achieve twice the practical effect of preventing the emergence of soil-borne diseases. Different diseases must have different rotation periods, and the time period of crop rotation must be grasped to be reasonable.

4.Improve planting measures to prevent diseases.

The groove is planted with high furrows, and the small water is watered frequently to prevent large water from flooding. Reasonable dense planting, improve the standard of natural ventilation and light transmittance of crops, and reduce the humidity of the road environment. Clean up the pastoral scenery, pull out the diseased plants, and apply lime powder in the holes of the diseased plants.

Prevent partial application of basal fertilizer, moderate topdressing of phosphorus, potassium fertilizer, preferably topdressing of organic fertilizer, and can be applied to free single product series to improve crop disease resistance. Leaf topdressing replaces root fertilization, such as spraying rainbow and other commodities, and fertilizer can be sprayed with pesticides during the crop growth period. The grafting method can prevent diseases, and the use of disease-resistant clay wood grafting method to replace roots can effectively prevent the occurrence of soil-borne diseases.

The soil layer is a relatively complex ecological environmental protection, which carries many pathogenic bacteria and many beneficial microorganisms, which compete with each other, contact each other and contain each other under the premise of different natural ecological environments. Under certain natural environmental conditions, beneficial microorganisms can inhibit harmful pathogenic bacteria, so that diseases cannot be produced.

In the prevention of soil-borne diseases, it is necessary to create a living environment that is conducive to beneficial microorganisms on the one hand, and to maintain beneficial microorganisms on the other. The traditional way of preventing soil-borne diseases is also killed by killing beneficial microorganisms, which is likely to cause more harmful and even more risky pathogenic bacteria in the soil environment. Therefore, in order to minimize the occurrence of this kind of situation when it comes to survival, microbial fertilizer can be used before transplanting crops (such as Commander-in-Chief, Charcoal Harvest and its small turtles, etc.), 1 mu 80 120 catties, in order to maintain the allelopathic natural environment and improve the plant's ability to resist disease.

The biggest harm of soil-borne diseases is that crops can be harvested.

1. Soil-borne diseases are infectious diseases classified according to the mode of transmission, and infectious diseases also include airborne diseases, rain-borne diseases, mediator-borne diseases, and species-borne diseases according to the mode of transmission.

Some diseases are transmitted in more than one way, such as viral diseases, which can be transmitted through seeds, virus-carrying insects, contact with plant sap, etc. As the name suggests, soil-borne diseases are infectious diseases that use soil as the transmission route, and currently soil-borne diseases can be divided into fungal diseases, bacterial diseases, viral diseases and nematode diseases. For example, bacterial wilt, wilt, root rot, wheat yellow mosaic virus disease, etc.

Clearly, the basis for the control of soil-borne diseases is rational crop rotation. Because the pathogen comes from the soil, and its survival period in the soil is the limit of reasonable crop rotation, the longer the pathogen can survive in the soil, the longer the rotation period should be. For example, the survival period of watermelon wilt bacteria in the soil is 6-8 years, so if you plant watermelon more than 8 years after planting watermelon, even if the blight of the plot has been more serious, as long as you do some basic disease prevention measures, you can avoid the disease.

2. Many soil-borne diseases will damage the root system, so the selection of rootstocks that are not infected by pathogens can also play a good role in the prevention and control of soil-borne diseases after grafting.

For example, using black-seeded pumpkin as rootstock to graft watermelon, using thorny eggplant and wild eggplant as rootstock to graft eggplant, and grafting cucumber with gourd are all helpful to prevent and control soil-borne diseases such as watermelon wilt, eggplant bacterial wilt, cucumber wilt, etc. The pathogens of soil-borne diseases live in the soil, so the use of beneficial microorganisms to antagonize and reparasitize harmful microorganisms is a green and pollution-free prevention and control technology. For example, Trichoderma trichoderma, Trichoderma harzianum, etc., can be used to prevent and control a variety of diseases such as gray mold, white silk disease, root rot and other diseases of tomato, cucumber, strawberry and other crops through antagonism, heavy parasitism and other effects.

For another example, a variety of bacterial pesticides such as Bacillus cereus and Bacillus subtilis can be used to prevent and control soil-borne diseases, among which Bacillus subtilis is mainly used to prevent and control fungal diseases, and Bacillus cereus and Bacillus polymyx are mainly used to prevent and control crop bacterial wilt.

In short, soil-borne diseases should not only focus on the application of fungicides, but also on the basis of avoiding soil infection.

It may lead to underdeveloped roots or complete decay and death of crops, which may lead to short plants, and in severe cases, they will not grow normally, which will affect the fertility of the soil, affect the subsequent cultivation and continuous planting, and may lead to the spread of pests and diseases.

It can cause the death of all crops, and it can also lead to soil destruction, so it is important to prevent the emergence of this disease. I certainly know that this disease can cause damage to large areas of crops.

The damage is great and irreversible, so I think there are many things that we need to be aware of.

In recent years, the damage of wheat hydrocele disease has increased, and there is an epidemic trend. Wheat is affected by the disease. If the disease is mild, the ear is grained, and when it is severe, it cannot be pulled, and the potato is turned into a white ear.

Identification. Wheat is susceptible to leaf sheath and stem blight at different growth stages. The lesions on the leaf sheath are grayish-white in the middle and light brown on the edges.

The lesions enlarge and join into flower stalks. The lesions on the stalk are soft and longitudinally split, and the lesions expand to form rotten stems. Because the flower stalk rot stem can not be extracted and the dry heading is formed or the white spike is formed after heading, with less fruit and fine particles.

Pathogenesis: The pathogen survives in the soil as hard bacteria or mycelium and becomes the main source of infection. Wheat population is large, fertilizer water is used too much, especially nitrogen fertilizer, and field humidity is high, which is conducive to the occurrence and spread of wheat diseases.

The optimal temperature range for the occurrence of wheat sheath blight is 5-25 and 14-20. The frequent rainfall in early and mid-April and the high relative humidity from late April to early May are very favorable to the occurrence and development of diseases. In drought years, the disease occurs mildly.

Prevention and control methods: select disease-resistant and disease-resistant varieties; Implement crop rotation to control the occurrence of diseases; Sow seeds at the right time, reduce the amount of sowing, and plant reasonably densely; Humidify organic fertilizer, formula fertilization, avoid flood irrigation, and drain water in time.

Pharmacological prophylaxis and**. with"Tianda Yufeng No. 18"A bag and"2116 days (eclipse)."A bag of 25 kg spray with water, the mixed strain rate is from 20% to 30%, sprayed around the time after the first return to green (generally in mid-March), and the second preparation is used within 15 days after fertilization by the first world burner, which can effectively control wheat sheath blight, and colleagues can also cooperate with other diseases of wheat. Identification of wheat root rot:

Wheat seeds, sprouts, seedlings, adult roots, leaves, stems, and ears can all be damaged, and the symptoms are complex and diverse. The roots of the buds and seedlings turn brown, the buds rot and cannot be unearthed. The leaves of the unearthed seedlings close to the ground are scattered with round brown lesions, and the severely diseased leaves turn yellow and die.

There are brown stripes on the buds. The epidermis of the hairy roots and straight roots on the adult roots is shed, and the root crown turns brown. Brown streaks appear at the base of the stem, and in severe cases, the stem is broken and dies.

Many black dots appear on the leaves, which later expand into a spindle-shaped, yellow in the middle, and a green halo around them. Black mold layers, i.e., conidia and conidia of the pathogen, appear on both sides of the lesion. When the lesions are joined together, the leaves die.

The base of the spike becomes brown, the surface is densely covered with black mold, the spike and fruit spike often turn brown and rot, and the spikelet does not bear fruit or the seeds are not full. Partial or all of the embryos turn brown and form"Black embryonic"。The seeds also have spindle-shaped or irregularly shaped brown spots on the surface.

Soil-borne diseases refer to soil diseases caused by pathogens living in the soil attacking crops from the roots or stems of crops when conditions are suitable. Soil-borne diseases occur when a single crop is cultivated continuously in one field for a long time.

Soil-borne diseases generally damage the roots and stems of plants, once the disease occurs in the early stage of crop growth, the seedlings will rot or the stems will rot suddenly, and the seedlings will die quickly, seriously affecting crop production. Diseases occur in the late growth period of crops, and the yield is reduced by 20-30% in normal years, 50-60% in severe years, or even no harvest. After the onset of soil-borne diseases, it is more difficult to prevent and control, and the pathogens hide in the soil for overwintering, which is difficult to kill, and continue to attack crops in the next year, so that the disease becomes more and more serious.

Common soil-borne diseases include: pepper, eggplant, cucumber cataplexy, blight, blight, root rot, wilt (yellow) wilt, tomato and pepper bacterial wilt, Chinese cabbage soft rot, rape, lettuce sclerotinia sclerotinia disease, wheat total erosion, cotton blight, red rot, verticillium wilt and nematodes.

How to prevent soil-borne diseases?

1. Soil treatment: During the fallow period of the shed in August, chop 1000-2000 kg of rice, wheat straw and orange stalks + 100 kg of slaked lime or 15 kg of urea, and add an appropriate amount of Qianmei plant protection stuffy shed agent to fill enough water in places where conditions permit, and then cover with plastic film, and close the greenhouse at the same time, and treat it for about 15-20 days.

2. Selection of disease-resistant varieties: The selection of disease-resistant or disease-resistant varieties can greatly reduce the harm of soil-borne diseases.

3. Crop rotation: It is an economical and effective measure to prevent and control soil-borne diseases, and the rotation between crops is carried out reasonably, especially the rotation of water and drought, which can achieve twice the result with half the effort to prevent the occurrence of soil-borne diseases. Different diseases require different years of crop rotation, and the rotation time must be mastered to be effective.

4. Improve cultivation measures to prevent diseases.

1.Deep furrow and high furrow cultivation, small water frequent watering, to avoid large water flood irrigation.

2.Reasonable dense planting, improve crop ventilation and light transmission conditions, and reduce ground humidity.

3.Clean the field, uproot the diseased plants, and sprinkle lime in the holes of the diseased plants.

4.Avoid partial application of nitrogen fertilizer, appropriately increase phosphorus and potassium fertilizer, and improve crop disease resistance. It is good to increase the application of organic fertilizer.

5.Use Qianmei plant protection head dragon before transplanting with compound fertilizer sprinkling or 800 times liquid flushing after planting.

6.Grafting for disease prevention, using disease-resistant rootstock grafting and root replacement can effectively prevent the occurrence of soil-borne diseases.

The harm is still relatively large. It is likely to lead to a decrease in the fertility of the soil, and then it is also likely to lead to decay, or it will lead to a continuous decline in yields and a decrease in the economic benefits of farmers.

Soil-borne diseases are very harmful, especially easy to cause yield reduction, and will also affect the growth and development of plants, this disease should be treated in time.

It's very harmful, and many people are affected by this mode of transmission, and this mode of transmission is not easy for people to detect.

This harm is particularly large, once there is this disease, many plants can not grow, and it will also have an impact on the environment.