What to pay attention to when storing pesticides over winter

Liquid pesticides should above all be kept away from fire sources and protected from contact with oxidizers and alkaline substances; they should generally be placed in a ventilated, shaded, cool and dry place, stored with the bottle mouth facing up, and not stored together with strong oxidizers such as nitrates and strong acids, or with organic materials such as charcoal and paper scraps.

For bottled pesticides, the caps and stoppers must be tightly screwed on and sealed to prevent volatilization and decomposition. Some pesticides also have their own characteristics: for example, phoxim and trifluralin emulsifiable concentrates easily decompose when exposed to light and heat, so they should be stored in a dark, cool place; organophosphorus pesticides easily decompose and lose effectiveness when they encounter alkali, so they should not be stored together with alkaline substances. Bottled liquid pesticides tend to freeze at low temperatures, forming lumps or causing bottles to burst, so it is best to wrap them with rice husks or similar materials for insulation and freeze protection during storage.

For solid pesticides, attention should be paid to moisture-proofing and damp isolation, using wooden boards, cement boards, or sun-dried rice husks, wheat straw, rice straw, etc. as bedding. When storing smoke agents, they must not be placed together with volatile, flammable or explosive items, and the temperature should not exceed 30°C.

For gas pesticides, in addition to protection against high temperatures during winter storage, violent impacts should also be prevented, and valves should be checked frequently for looseness and steel cylinders for cracks to prevent explosions.

Microbial pesticides should be stored in a low-temperature, dry environment, protected from high temperatures and kept away from moisture, and the storage time should not exceed 2 years.