Copper element fungicide can not only prevent fungal diseases, but also prevent bacterial diseases; it has protective and preventive effects, and at the same time has both therapeutic and eradicative effects; it can heal wounds, sterilize and eliminate inflammation, and can also treat certain skin diseases; It is used for preservation and preservation of certain fruits during storage.
Sterilization principle of copper element bactericide Copper element bactericide mainly relies on the release of copper ions and the groups of -SH, -NH3, -COOH, and -OH in the protein of fungi to achieve the effect of killing bacteria. Wherein -SH represents an fluorenyl group, -NH3 represents an amino group and nitrogen, -COOH represents an acid; -OH represents a hydroxyl group and a base.
Characteristics of copper element bactericides Copper element bactericides have strong adhesion, rapid formation of drug film, resistance to rain erosion, long-lasting effect, and can prevent the invasion of pathogens for a long time, so the control effect is better. At the same time, it is not easy to produce drug resistance in long-term use.
Copper element fungicide has the characteristics of low toxicity, pollution-free and environmental protection. It has become the first choice for producing green food and organic fruits.
Classification of copper element bactericides Copper element bactericides can be divided into inorganic copper and organic copper. At present, the market is still dominated by inorganic copper preparations. Common preparations include: cuprous oxide (master copper), copper sulfate, basic copper sulfate, copper oxychloride (king copper) and copper hydroxide (killable). Common preparations of organic copper include: copper acetate, copper quinoline, copper rosinate, copper thiabium, copper sputum, copper amber, copper humate, copper amide, copper amino acid and the like.
The characteristics of the inorganic copper bactericide combined with the performance characteristics of the inorganic copper bactericide and the bactericidal original, the following points should be noted when using it for disease prevention and treatment:
1. Because the liquid medicine is alkaline, it can not be mixed with acidic pesticides;
2. It is easy to produce phytotoxicity when used in sensitive periods such as flowering and young fruit of crops;
3, the sterilization spectrum is narrow, easy to be allergic to individual crop varieties;
4, some crops are easy to induce or stimulate the occurrence of mites and scale insects. The main reason for the occurrence of mites is that inorganic copper mainly destroys the protease of pathogenic bacteria and causes the bacteria to die, but does not destroy the plant cell structure. Therefore, it is safe for crops, but has no killing effect on mites, but no mites for mites. It has a killing effect, but it has a killing effect on its natural enemies, which causes the cockroach to proliferate out of control and cause cockroaches to occur, causing serious damage.
In addition, the use of copper fungicides not only can supplement the trace elements required for some crops, but also promote crop growth, stimulate fruit color and improve quality. At the same time, it can trap the cockroaches to inhabit, feed, and breed, and stimulate the mites to lay eggs in large quantities;
The characteristics of the organic copper fungicide are based on the mode of action of the organic copper and the sterilization, and the main ones are manifested in the following aspects:
1. Neutral-based, broad-spectrum compounding, can be mixed with most fungicides, insecticides and plant growth regulators ;
2, it is not easy to cause and stimulate the occurrence of mites (rust tick) and scale insects;
3, a wide spectrum of sterilization, relatively safe and reliable, not easy to produce phytotoxicity;
4, does not contain CU2+, does not hurt the flower, can be used in all periods;
5, CU element content is low, low residue, low pollution, is conducive to environmental protection;
6, CU ions and compounds double sterilization, efficient and thorough;
7. Promote the absorption of Fe ions, Al ions and other elements to play the role of strong seedlings;
Cautions in the use of copper bactericides Because the organic copper and inorganic copper of copper bactericides have different characteristics and sterilization methods, it is necessary to consider crop safety while ensuring the eradication of diseases, so when using copper bactericides, Pay attention to the following aspects:
1. Cross-use as many times as possible in the sputum-prone areas or dry seasons;
2, when used on cotton, it is easy to cause early and frequent hair loss, resulting in cotton stalks "stalks";
3, beans, peppers, tomatoes, eggplants and other vegetables use
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