The invention relates to a compound
chloride-based environment-friendly
snowmelt agent, which comprises a main component of a
chloride mixture of
calcium chloride dihydrate and
magnesium chloride hexahydrate, contains various additives of
sodium citrate,
disodium hydrogen phosphate,
sodium metasilicate,
urea and the like and can contain
abscisic acid or indoleacetic acid or a mixture thereof,
sodium tartrate,
humic acid or a salt thereof. The
snowmelt agent in the invention can reduce the corrosivity to a
metal object and a concrete structure effectively, improves the anti-salinization capabilities of a seed, a
plant and soil, can be used when the temperature is as low as -25 DEG C, and solves the problems of bad
snow melting effect caused by an autologous
freezing point characteristic when a sodium chloride-based
snowmelt agent is used and high cost caused by using an
anhydrous calcium chloride-based snowmelt agent under the condition. The invention also provides a use method of the snowmelt agent, which places the main component and each additive separately without preparing a finished product of the snowmelt agent in advance and compounds the snowmelt agent on the spot before using. The method can avoid the problems of
wetting, hardening and the like of the finished product of the snowmelt agent in the processes of storing and transporting, can avoid the defects of high-temperature
energy consumption in the process of preparing compound granules (such as
coating and granulating) and the capability of causing
decomposition of the additives, has simple operations and a low cost, and is particularly suitable for on-site mechanical shed work.