Seed soaking is the most commonly used technique in seed disinfecting treatment. The method is simple, saves pesticides and has obvious effects. However, due to improper methods of operation, some farmers have little technical effect, and the phenomenon of drug injury also occurs from time to time. In response to this, we must pay special attention to the following issues in production. 1, pay attention to the choice of pharmaceutical formulations. The pharmaceutical soaking is done with a diluent for the drug, and the drug used must be soluble in water. Current pharmaceutical formulations that dissolve in water are wettable powders, liquids, emulsions and suspensions. Can not be soaked with powder, because the powder is insoluble in water, powder floating on the surface of the water or sinking, uneven adhesion of the seed, can not achieve the effect of soaking sterilization. 2, accurate preparation of liquid medicine. The concentration of the agent used for soaking is not calculated based on the weight of the seed, and is generally calculated based on the active ingredient content of the agent. The soaking agent concentration is generally related to the soaking time. The low soaking time can be slightly longer, and the high soaking time should be shortened. If the concentration is not accurately grasped, it is prone to phytotoxicity or reduce the soaking effect. 3, master the soaking time. There is a certain time requirement for the soaking of pesticides. If they are too long, they will produce phytotoxicity. If they are too short, they will not achieve the purpose of disinfection. Specific soaking time according to the instructions for use of drugs to operate. 4, soaked seeds to wash and dry. Seeds with poor tolerance to pesticides should be rinsed with water after they are soaked to avoid phytotoxicity. If you don't specify how to wash after dipping, you don't need to wash it. Regardless of the need or need of washing, after soaking, they should be spread out to dry, and some can be sowed directly after soaking, depending on the type of pesticide and soil moisture. 5, the liquid surface to be higher than the seeds. When soaking, the liquid should be more than 16 cm above the seed to prevent the seed from swelling after exposing to expose the liquid and reduce the soaking effect. 6, fully stirred. Put the seeds into the liquid to be fully stirred, eliminate the bubbles in the liquid, make the seeds and the liquid full contact, improve the soaking effect.
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