摘要
仿形喷洒变量施水技术的概念是作者提出用来表示根据被灌溉地块或区域形状变化的要求实现变量施水的一种精确灌溉技术,具有提高灌溉质量和效率,降低灌溉系统成本的潜在优点。该文分类介绍了这种技术的实现原理、优缺点和适用范围,给出了仿形喷洒变量施水喷头流量射程调节器的一般组成和实现方式。指出了今后这种技术的研究重点应集中在以下3个方面:加强仿形喷洒变量施水喷头关键部件结构尺寸对其性能参数影响的理论和试验研究,为喷头优化设计提供依据;尽快开发应用于园林景观喷灌的地埋式仿形喷洒变量施水喷头产品;积极开展应用于大田喷灌的高均匀度仿形喷洒变量施水喷头组合喷灌技术的研究,以降低现有喷灌工程中喷头和管道的布置密度。
The term 'Profile modeling and variable rate sprinkling' is firstly used by the authors to describe the precision irrigation technique that can conduct variable rate application according to the continuous change of the irrigated area profile. This technique has great potential to improve the irrigation quality and efficiency and reduce the investment costs on sprinkle irrigation. This paper classifies all these techniques avalable around the world into different systems according to their operation principles, and introduces their main properties and adaptivities. The general construction and principle of the spraying range and flow rate adjustor for the profile modeling and variable rate sprinkler are given. Finally, the paper suggests that three aspects for the future research work on the profile modeling and variable rate sprinkling technique should be stressed. They are: 1) theoretical and experimental analysis of the influence of the size of the key components on the performance of the profile modeling and variable rate sprinkler, which provides basic information for the design of sprinkler of this kind; 2) to develop new products of pop-up profile modeling and variable rate sprinkler that are mainly used for irrigation in the garden and landscape place; and 3) to research the high uniformity profile modeling and variable rate sprinkler spacing irrigation technique, in order to reduce the sprinkler and pipeline density in the sprinkle irrigation system.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2004年第1期16-19,共4页
Transactions of the Chinese Society of Agricultural Engineering
基金
教育部重点基金项目(01166)
陕西省科技攻关项目(2001K02-G3-01)
西北农林科技大学青年专项基金(0205)
关键词
仿形喷洒
变量施水
精确灌溉
喷灌
profile modeling of sprinkling
variable-rate water application
precision irrigation
sprinkle irrigation
