1. There are two types of fungicides. When selecting a fungicide, it is necessary to clarify the nature of the fungicide. A fungicide for preventing plant diseases, also known as a protective agent, such as Bordeaux mixture, mancozeb, carbendazim, etc.; an agent for killing or inhibiting pathogenic bacteria invading a plant after the onset of a plant, also called a therapeutic agent In the early stage of the disease, the application effect is better, such as anti-drying, bacteria sterilization, Baozhida and other compound fungicides.
2, the fungicide should be sprayed at 8 to 9 am, after 4 pm. Spraying at high temperature in the hot sun is not good for crop absorption, and the drug is easy to decompose and evaporate quickly.
3. The fungicide cannot be mixed with alkaline pesticides. Do not arbitrarily increase or decrease the amount of use. The medicine should be used with the medicine.
4, fungicides are mostly powders, emulsions and suspensions, must be diluted before application, first put the drug, then water, and then stir with a stick. When mixed with other pesticides, the fungicide should be diluted and mixed with pesticides.
5. Spray the disinfectant spray at intervals of 7 to 10 days. For drugs that are not strong in adhesion and poor in systemic absorption, they should be sprayed after 3 hours of spraying and must be re-sprayed after rain.
6. As soon as possible, the cotton plantlets of the diseased plants will resume growth. In the short term, the leaves of the diseased plants will turn from yellow to green and grow vigorously. While controlling the disease, the disease resistance of the diseased seedling can be enhanced, and the regulator containing a plurality of micro-nutrients (foliar fertilizer) can be sprayed for adjustment.
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