单喷头水量分布图是喷灌系统设计中最基本的资料之一,而坡地上单喷头水量分布与平地上的差别很大,靠试验直接取得坡地上这些资料是很困难的,该文基于动力学原理推导出水滴运动方程,并借助这一方程及水量平衡原理。建立了将实测平地单喷头水量分布图转换为坡地上单喷头水量分布图的计算模型。将该模型的计算结果与实测坡地单喷头水量分布图对比,证明该模型及电子计算机模拟特性曲面法对PY_1-15及PY_1-30型喷头进行了四 Single-nozzle water distribution map is one of the most basic data in the design of sprinkler irrigation system. However, the single-nozzle water distribution on the slope is very different from that on the ground. It is very difficult to obtain these data directly by the test. Based on the kinetics The principle deduced the equation of water drop motion, and with this equation and water balance principle. A calculation model was established to convert the measured single-head water distribution of measured flat to the single-head water distribution on the slope. Comparing the calculated result of this model with that of a single nozzle in measured slope, it proves that this model and the computer simulation of characteristic surface method make PY_1-15 and PY_1-30 nozzles