Watering fertilizer injection unit

The utility model provides a watering fertilizer injection unit, including screw rod counter, water tank, fertilizer injection unit, purity detection appearance, metering valve, water purifier, waterpump, delivery port, SCR system cleaning delivery port, solenoid valve and urea aqueous solution delivery port, the screw rod counter sets up the lower part at the water tank. The utility model discloses a smart metering ware, fertilizer injection unit, the metering valve, the water purifier, the delivery port, the setting of SCR system cleaning delivery port and urea aqueous solution delivery port, be favorable to producing heat energy, produce alternating magnetic field at electronic circuit board component parts, the atom collides mutually, rub and the production of heat, consumption poweris little, rapid in detection speed, low cost price, the purification efficiency is high, the operation is thus simple, long service lifetime, thereby have the better transparency and abrasion performance, improve the effect o