According to the sources of fungicides, the main varieties, except for the agricultural antibiotics, are biocides, and the fungicides are a kind of fungicides used to prevent and control plant diseases. Any fungicide that has the effect of killing or inhibiting growth, but does not hinder the normal growth of plants, is commonly referred to as fungicides. Fungicides can be classified according to the way of action, source and chemical composition of raw materials.
According to the sources of raw materials for Fungicides
1, inorganic fungicides such as sulfur powder, sulphur mixture, copper sulfate, mercuric chloride, lime Bordeaux, copper hydroxide, cuprous oxide and so on.
2, organic sulfur fungicides such as ammonium, sodium, zinc, zinc, mancozeb, and so on.
3. Organophosphorus and arsenic fungicides such as rice blast, Ke Wen San, aluminum phosphate, methyl phosphor, germicide, and so on.
4. Replace benzene fungicides such as methyl ethyl chloride, chlorothalonil, dixonon and pentononicrobenzene.
5. Azole fungicides such as Triadimefon, carbendazim, carbendazim, carbendazim, thioprim.
6. Antibiotics fungicides, Jinggangmycin, polyamycin, Chun Lei mycin, streptomycin, and fungicin 120.
7, compound fungicides such as dianweiwei, Shuang Xiao Ling, anthrax, Fu Mei, antitoxic alum M8, methyl cream copper, DT bactericide, metalalin manganese zinc, seed mixing spirit manganese zinc, methyl sulfide Ling manganese zinc, widely sterilized milk powder, metalaxyl - formalin - humimable powder and so on.
8, other fungicides such as metalaxyl, sclerotium, humilin, paracetamol, sterilide, kamdan, tefitin, dipterin, Rhizoctonia, Faure Marin, high lipid membrane, bactericolone, fromilon, quinolone, enoylmorpholine manganese zinc, etc.
According to the use of fungicides
1, a protective agent is called protective effect to protect the plant from the plant or the surrounding environment before the pathogenic microorganism is exposed to or without immersion in the plant body to protect the pathogen spores from the germination of the pathogenic spores or to kill the sprout. The agent that has this effect is a protective agent. Such as Bordeaux, zinc, copper sulfate, green copper, mancozeb, chlorothalonil etc.
2. The pathogenic microorganism of therapeutic agent has been immersed in plants, but the symptoms of plants are in incubation period. The drug can kill or inhibit the pathogen by transporting, spreading, or producing metabolites from the plant tissue of plant epidermis, so that the plant can no longer be injured and restore health. Drugs that have such therapeutic effects are called therapeutic agents or chemotherapeutic agents. Such as methyl ethyl carbendazim, carbendazim, and clomithromycin.
3. Eradicating agents refer to plants that can kill pathogens directly after infection. The agent with this eradication effect is a eradicating agent. Such as arsenic, pentachlorophenol sodium, stone sulfur mixture, etc.
According to the conductivity of the fungicides in plants
1. Internal absorbant can be absorbed into plants by plant leaves, stems, roots and seeds. Through plant body fluid transport, diffusion, retention, or metabolites, the fungicides can be used to prevent and control some diseases in plant or seed endosperm, in order to protect the plants from the infected raw materials or to treat the infected plants. The effect of treatment and protection. Such as carbendazim, rikhoe, green HENHENG No. 2, mycophenolate, frosting, methylol, metalaxyl, ethyl and aluminum, methyl TOBU, dieksong, powder rust, cupric, antitoxic alum, seed mixing, and so on.
2. Non internal bactericidal agents are agents that can not be absorbed and transported in plants. At present, most of the varieties are non - absorbable fungicides, such agents are not easy to produce resistance to the disease origin, more economical, but most of them only have protective effects and can not prevent and control the diseases in the plant. Such as zinc sulfate, copper sulfate, multi fruit, chlorothalonil, green milk copper, surface active agent, synergist, sulfur mixture, grass wood ash, Bordeaux, mancozine, Fu Mei Bi, chlorothalonil and so on. In addition, fungicides can also be classified according to their use, such as seed treatment agents, soil disinfectants, sprays,
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