梨園のスプリンクラー防除施設に関する研究

In this paper, the Sprinkler system applying agricultural medicines in a pear orchard is investigated.
At the facilities, the medicines were mixed with water at terminal pipes, and the orchard were sprinkled with gravitational flow type from the conduit tank.
It is possible to opperate the system by automatic opperation with use of many magnet valves.
After construction of the facilities, the concentrations of sprinkled fluid were examined by an electric conductance meter to make use of liquid fertilizer as reagent and fluid pressure at the sprinkler nozzle was measured at the same time.
Moreover, the appropriate distribution pattern of sprinkled fluid was examined.
From the tests, the following results are obtained.
1) The measured values of the concentration of sprinkled fluid and the fluid pressure at sprinkler nozzle are almost equal to the designed values.
2) The uniformity coefficients of sprinkler distnbution are attained between 84% and 86% at the set of sprinkler space of 15m×15m.