What is the best medicine for greenhouse soil disinfection?

Greenhouse soil disinfection with copper sulfate, or lime milk.

Copper ions have a good and long-lasting bactericidal effect, and the use of appropriate concentration of copper sulfate solution can ensure that the greenhouse soil has a long-lasting bactericidal effect.

Lime milk is alkaline and also has a good bactericidal effect, but the effect lasts for a short time, and carbon dioxide.

reacts into calcium carbonate.

, the bactericidal effect will be lost. However, the impact on the soil is relatively small.

Disinfection with lime nitrogen: choose a sunny day with high temperature and good sunlight to level the soil and irrigate it to keep the relative humidity of the soil at 60% to 85%. After 2-3 days after irrigation, lime nitrogen is evenly sprinkled (40-60 kg mu).

After that, the soil is turned deep enough to make the lime nitrogen particles fully contact with the soil, and then the stuffy soil is covered with a transparent film for 2 weeks. Lime nitrogen disinfection can effectively control a variety of soil-borne diseases caused by pathogenic fungi, bacteria and nematodes. At the same time, it can supply nitrogen to plants, reduce nitrate accumulation, and promote plant growth, which is an environmentally friendly soil disinfection technology.

5261 doses were applied to the soil before and after sowing with the aim of preventing the spread of seed-borne and soil-borne diseases. The main application methods are as follows: spraying or watering.

The agent is diluted to a certain concentration with water, sprayed on the surface of the soil with a sprayer, or directly irrigated into the soil, so that the liquid medicine penetrates into the deep soil and kills the bacteria in the soil.

With copper sulfate, four kilograms per mu. Spraying of chemical solution.

Soil disinfection and sterilization can be done with the commonly used 84 disinfectant.

The commonly used 84 disinfectant can be used for pharmaceutical disinfection, and the concentration should not be too large, generally two to three percent. Use a sprayer to disinfect evenly. Stir the soil while spraying.

Soil disinfection is a technology that efficiently and quickly kills fungi, bacteria, nematodes, weeds, soil-borne viruses, underground pests, and rodents in the soil, which can well solve the problem of heavy stubble of high value-added crops and significantly improve the yield and quality of crops.

Soil disinfection is the phenomenon of applying chemical pesticides to the soil to kill germs, nematodes and other harmful organisms. It is generally carried out before the crop is planted. In addition to the application of chemical pesticides, soil disinfection can also be carried out using dry heat or steam.

Measures and processes for destroying, passivating, reducing or removing from soil all microorganisms, contaminants and toxins that may cause infection, poisoning or adverse effects of plants and animals.

Soil disinfection is a common practice to help minimize pest infestation attacks and thus improve the survival and quality performance of crops. Of course, it can also help to improve the parameters of the soil, making it suitable for the cultivation of a wide variety of plants. However, the knowledge involved in the consideration of the actual situation will help to some extent in determining the appropriate soil disinfection method to choose.

Dear, hello, the result of your inquiry: seedling killer for greenhouse soil disinfection. Commonly used seedlingicides are:

Cyclothrin, methanol, methylene green, dichlorophenol and cypermethrin, etc., except for methanol, are all organic shasa agents with du. Due to the toxicity and dosage of DU organic fungicides, which will cause harm to the environment and human health, they should also be avoided as much as possible in garden pesticide, so the research on the recent development of greenhouse soil disinfectants is particularly important. In recent years, some studies have integrated salicylic acid, palmitic acid, citric acid and some insecticides such as formic acid and mosquitoicidal acid into one acre, and developed some safer, less toxic and more effective soil disinfectants for potato greenhouses.

In addition to using organic agents to disinfect the soil, physical disinfection can also be adopted, such as hot and hot disinfection, and the soil disinfection targets should also be based on different harmful plant pathogens. For example, thermal heat disinfection, when the soil temperature rises to the pathogenic bacteria tolerance temperature of the seedling (generally refers to the spore tolerance temperature of the spore plant), the heating residue can be carried out in the way of sealing the greenhouse, so as to achieve the effect of sterilization and rapid repentance; Another disinfection method is to use drainage technology, in the form of slope protection, to prevent soil water accumulation, so as to achieve the effect of sterilization.

How to disinfect greenhouse soil? What disinfectant products are good to use?

1. Pharmaceutical disinfection method. The simple steps are: (1) Clean the shed.

After the stubble is finished, all plant remains are removed from the greenhouse chain, buried deep or incinerated. (2) Deep hall blue soil. When the soil moisture is suitable, turn it deeply, to a depth of about 30 cm or more, and beat the large clods into fine pieces.

3) Medications. There are many potions available. For example, 50% carbendazim wettable powder can be used to prevent root rot, stem rot, leaf blight and gray spot and other diseases per square meter of soil; It is also possible to spray the soil with a concentration of about 2% alcohol (mixed with water) and then cover it with plastic film for 1-2 weeks (newer method); Or spray with the same amount of Bordeaux liquid kilograms per square meter of soil, which has obvious effects on black spot, spot disease, gray mold, brown spot and anthracnose.

There are a variety of options for soil sterilization and disinfectants commonly used on the market, and the specific choice of which agent to choose depends on your needs and use environment. Here are a few common soil disinfectants: Chlorinated Lime:

It can effectively kill most common soil pathogens, but the sterilization effect on some herbone-tolerant lawn weed seeds and some insect eggs is poor. Cuprous oxide: Commonly used in vegetable planting, it has a good bactericidal effect on a variety of pathogenic bacteria and fungi, but has a weak inhibitory effect on some insect eggs and spores.

Benzoic acid agent such as methyl zapong acid and methyl isothiocyanate, etc., can be widely used in soil disinfection of a variety of crops, and has a good bactericidal effect on a variety of pathogenic bacteria and fungi. Marine:

For example, matrine and fipronil have a good bactericidal effect on some soil-borne viruses, nematodes and fungi, but the control effect on some other pathogenic bacteria and spores is weak. When choosing soil sterilization and disinfectants, it is recommended to comprehensively consider Qinjian according to factors such as crop type, disease type, environmental conditions and requirements for making noisy ants.

The choice of soil fungus disinfectant should be determined according to different crop types and soil types and sinks. Generally speaking, chemical agents such as methyl bromide compounds, ammonium chloride, sodium chloride, etc. have a good effect on S bacteria, but they may also have negative effects on the soil, such as affecting the balance of soil organisms and microorganisms, destroying soil structure, etc., and there are also hazards to people and the environment. Therefore, in order to protect the soil and the environment, it is recommended to use biological bacteria or organic bacteria agents, such as diammonium phosphate, red soil, tea tree oil, etc.

These microbial agents are usually extracted from natural plants and do not pollute the soil and the environment, and the best choice should be made on a case-by-case basis, with consultation with local agricultural technicians or professional bodies, and decisions can be made based on the specific soil disease situation. In addition, when using chemicals, they should be used correctly in accordance with the instructions for use, avoid excessive use and abuse, and protect soil and environmental health. <>