ACCESSORIES FOR LIGHT MOBILE SPRAY IRRIGATION SYSTEM

The utility model relates to an agricultural and miniature accessory device of a flowing type for a spray irrigation machine, which adopts a venturi tube and a rotary valve, and makes a main and a branch pipes form fixed proportional relation. The volumetric capacity V (liters) of a chemical fertilizer pot, the spilt flow quantity Q (liters per second) for entering the chemical fertilizer pot, the discharge coefficient K and the spraying time n (seconds) accord with the following relational expression that n is equal to L g (1 subtracts (KV subtracts q) divides (V subtracts q)) divides L g ((V subtracts q) divides V) adds 1. The needed water layer depth can be achieved by that operating personnel only master the time of spraying, and the spraying quantity of solvency can meet the need of designing.