喷灌强度

结果表明，在一定压力变化范围内，系统压力的周期变化对平均喷灌强度及组合均匀度影响较小，但不同时段系统在不同压力工况下工作时，则对其影响较大。

The cycle of pressure change has few effects on the average sprinkler irrigation intensity and the combined uniformity . But within the range of pressure changing in different time , the pressure will affect the system working significantly .

由此建立了田间喷灌强度及组合均匀度与压力变化的相互关系，给出了根据田间灌水质量要求所确定的压力变化幅度的计算式。

According to these , the relationship of changes between the sprinkler intensity in the field and combined uniformity and the pressure were built .

射程在5m以上的大射程微喷头与普通的微喷头相比，具有降低工程系统投资，提高系统的经济性，降低喷灌强度，减少用水量等优点。

Comparing with common micro-sprinklers , the micro-sprinkler over 5 m range has the advantages of decreasing cost , lowering irrigation intensity and reducing water usage , etc.

允许喷灌强度及每次喷灌时间的确定

Determining Allowable Application Rate and Sprinkler Period

在土壤入渗速度和允许喷灌强度协调的情况下，每次喷水量越大，则产量越高。

If the soil permeable speed and allowable sprinkling irrigation strength can coordinate each other , every time the more spraying water is , the higher the output is .

以近似正方形喷洒域为重点，对水质点的运动轨迹和运动速度、喷灌强度和喷灌均匀度进行了计算机模拟和计算；

The motion trace of drop of water , the motion velocity of drop of water , spraying intensity and spraying even degree have been imitated and calculated by computer .

对新型喷头进行检测，以获得喷灌中的喷灌均匀度、喷灌强度、雾化程度等技术指标，要求其能满足有关的国家标准。

Subjecting the new style sprinkler to the field experiment in order to get the technical data of uniformity of spray irrigation , intensity of spay irrigation , degree of pulverization and ensure the consistency with the ISO standard .