Farmland deinsectization device

The utility model relates to a farmland deinsectization device which comprises a cutting column, a deinsectization lamp and a photovoltaic power generation system. The deinsectization lamp comprises aliquid containing barrel and an insect trapping light source, the liquid containing barrel is a barrel body with a hollow interior and an opening in the upper end, the peripheral barrel wall of the liquid containing barrel is pervious to light, the liquid containing barrel is detachably installed at the upper end of the cutting column, the middle of the bottom wall of the liquid containing barrelprotrudes upwards to form a pervious light source containing cavity, and the insect trapping light source is detachably installed in the containing cavity; the photovoltaic power generation system comprises a photovoltaic panel and a storage power supply, and the photovoltaic panel is fixed above the liquid containing barrel through a support and electrically connected with the storage power supply through an inverter; an