How to use copper fungicide reasonably?

How can copper fungicides be used reasonably? Please introduce the usage of copper fungicide as one of the important fungicides, which has the characteristics of the earliest development and application time, the longest use time, the largest application area, the best germicidal efficacy, the most uses and so on. Copper fungicide can not only prevent fungal diseases, but also prevent bacterial diseases; it has protective and preventive effects, and it also has certain therapeutic and eradication effects; it can not only be used for wound healing, sterilization and anti-inflammation, but also treat some skin diseases; it can also be used for preservation and antisepsis of fruits during storage. Because copper fungicide has the characteristics of low toxicity, no pollution and environmental protection, it has become the first choice for the production of green food and organic fruits. Copper fungicide sprayed on crops has strong adhesion and forms a drug film, which is resistant to Rain Water erosion, has a long effect, and can prevent bacteria from invading for a long time, so the control effect is better. With the use of copper fungicides, the disease is difficult to produce drug resistance. Copper fungicides have so many advantages that they will inevitably promote the development and utilization of this kind of preparations. at present, the inorganic copper preparations that have been developed are: basic copper sulfate (Bordeaux solution), copper oxychloride (king copper), cuprous oxide (copper master, backer), copper hydroxide (can kill, Guanyuqing, Fenghuan, Ruipo 2000) and so on. Organic copper preparations are: thiobacillus copper, complex ammonia copper (Xiaoyanling, Kecheng production hormone, glue ammonia copper), fatty acid copper, oleic acid copper (green milk copper), copper succinate, dicarboxylic acid copper (succinate copper, BT), copper soap, amine copper and so on. The development and utilization of organic copper preparations has become a hot topic in the production of fungicides. At the same time, there are also a variety of copper preparations mixed with other fungicides, such as: morpholine guanidine hydrochloride copper, nail frost copper (Ruidu copper), armour cream aluminum copper, complex ammonia copper zinc (Kangkuning, anti-kuling), mixed amino acid copper zinc manganese magnesium, physhanling, copper humate (843 rehabilitation agent) and so on. However, there is a problem that can not be ignored in the long-term continuous use of copper fungicides, that is, it is easy to induce the proliferation of mites and cause harm to mites. In many years of production, it has been observed that long-term use of copper fungicides to control angular spot, seedling anthracnose and blight on cotton can easily cause early and multiple occurrence of cotton leaf mites, resulting in the "collapse" of cotton leaves; legumes, pepper, tomato, eggplant and other vegetables apply copper fungicides to control blight, anthracnose, bacterial wilt and so on, which can easily cause tea yellow mites to lay eggs, increase in value, and lead to leaf drying and shedding. There are three main reasons for the proliferation of mites induced by copper fungicides: first, the germicidal mechanism of copper preparation is that copper ion can quickly destroy the protease of pathogenic bacteria and cause bacteria to die, but it will not destroy the tissue structure of plant cells and is safe to crops, but it has no killing effect on mites. Second, copper ion replenishes the trace elements of crops, promotes crop growth, stimulates the bright color of fruits and vegetables, improves their quality, grows green and shiny, so as to induce mites to inhabit, feed and reproduce, and stimulate mites to lay eggs in large quantities; third, although copper fungicides have no killing effect on mite pests, they have killing effects on their natural enemies, thus causing mites to proliferate out of control and lead to rampant and cause serious harm. In view of this, when applying copper fungicides to control diseases, it must be taken into account that it is easy to induce the proliferation of mites. In mite-prone areas or dry seasons, copper fungicides should be used alternately with other fungicides. Do not use copper fungicides many times in a row. Click to get more fungicide use technology click to get more pesticide use technology