摘要
在总结国内外变量施水精确灌溉喷头实现方法的基础上,对方形喷洒域变量施水精确灌溉喷头的实现条件进行了研究。通过理论分析,给出方形喷洒域变量施水精确灌溉喷头的射程、流量和转速应服从的变化规律和计算公式。指出这种喷头在组合喷洒时,为保证组合喷灌均匀性达到喷灌的技术要求,需要首先提高单喷头喷灌均匀系数。通过比较分析,得出了这种喷头的最优水量分布曲线应为类矩形的结论。研究结果为方形喷洒域变量施水精确灌溉喷头实现方法的研究提供了理论依据。
This paper gave a survey on the variable-rate sprinklers for precision irrigation. The variation principles of the throw distance, flow rate and rotation speed of variable-rate sprinklers for precision irrigation on square area were given. The irrigation uniformity for single sprinkler of this kind should be improved when multi-sprinklers are spaced for irrigation. And the ideal distribution pattern of sprinklers of this kind had been developed. The results provided theoritical supports for the design of variable-rate sprinklers for precision irrigation on square area.
出处
《干旱地区农业研究》
CSCD
北大核心
2003年第2期105-107,共3页
Agricultural Research in the Arid Areas
基金
教育部重点基金(01166)
陕西省科技攻关项目(2001K02-G3-01)
