Natural insecticidal and bactericidal minerals and plants, artificial organic and inorganic pesticides, plant growth regulators, biological pesticides and genetic pesticides are used, and human fertilizers and trace elements are added at the same time. Cotton seeds can be treated with chemicals such as mixing, fumigation, soaking and coating, which can effectively kill germs attached to the soil inside and outside the seeds and around the seeds, and is an effective measure to control pests and diseases in cotton seedling stage and realize seedling growth.

(1) Seed dressing is to mix and stir dry powder with dry seeds to make a layer of powder adhere to the surface of seeds evenly. Divide a certain amount of seeds and powder into three parts? Put it into a drum seed dressing machine for four times, or roll seed dressing in a big oil drum, or stir it repeatedly with a shovel to make the powder evenly distributed on the surface of seeds. Because it is dry powder seed dressing, seed dressing can be carried out several months to one or two years before sowing, which prolongs the action time of chemicals on seeds, so lower concentration or dosage can be selected to achieve the effect of the same dosage of chemicals. Wettable powder contains wetting agent which is easy to absorb moisture, which makes the powder agglomerate or agglomerate. You can't store it after mixing, you can only use it immediately.

(2) Filling the seeds is to spray or soak the seeds with high-concentration liquid medicine to make the liquid medicine evenly distributed, then pile them up, add plastic film and fumigate for a certain period of time. The method is simple and does not need special equipment. If you don't sow, it will generate heat and greatly reduce the germination rate of seeds.

(3) Seed soaking is to soak the seeds in a certain concentration of liquid medicine, and after a certain period of time, make the seeds adsorb chemical substances. This method is simple, does not need special equipment, the liquid medicine can be used repeatedly, the medicine can penetrate into the seeds, and the effect is better than seed dressing. Seed soaking needs to determine the concentration and soaking time of the prepared liquid medicine according to the number of cotton seeds, the proportion of selected chemicals and the requirements for soaking time, so that the liquid medicine can immerse cotton seeds.

(4) coating is to wrap the seed coating agent prepared by pesticides (pesticides, fungicides, etc.). ), fertilizers, growth regulators, film-forming agents and additives around seeds.