The invention discloses a field artificial
rainfall simulator comprising a water tank. The water tank is fixed to the ground by means of a leveling support. Plate levels are arranged at the top of the water tank. Needles for simulating rainfall are arranged at the bottom of the water tank. The water tank is connected to a magnetic pump arranged in a
water storage tank by means of a water inlet
pipe. The magnetic pump is used for injecting a solution in the
water storage tank into the water tank. The solution in the water tank flows into the
water storage tank via an overflow water outlet
pipe which is movably mounted on a
water level adjusting support. According to the field artificial
rainfall simulator and an application method thereof provided in the invention, a
water level-rainfall intensity relation curve only needs to be measured once, and one
water level corresponds to one rainfall intensity, thereby avoiding the problem of measuring the rainfall intensities before every experiment. The height of the overflow water outlet
pipe is adjusted to control the water level in the water tank, thereby control the
rain intensity, and then continuously varying rainfall intensities can be obtained without repeatedly changing needles. In addition, local
evaporation capacity can be roughly obtained. The field artificial
rainfall simulator is applicable to complex terrains in field, and the method is simple, and easy to operate, high in working efficiency, showing a broad application prospect.