地下滴灌抗根系入侵堵塞的研究进展

作物根系入侵滴头造成堵塞是影响地下滴灌系统运行的一个重要原因，目前国内外解决根系入侵堵塞的主要方法有：生产专用滴头和过滤器，滴头包括从结构上改进以防止根系入侵以及从滴头材料中添加缓释的除草荆氟乐灵来避免根系向滴头附近生长两种方式；专用过滤器是在过滤器内部安装放置除草剂氟乐灵的密封装置，过滤时氟乐灵随水进入滴头，起到防止根系入侵滴头的作用；向地下滴灌系统注入化学物质来杀死滴灌周围的根系；合理控制系统运行状况，避免出现水分胁迫等。

Research Advance on Anti-root Intrusion Clogging for Subsurface Drip Irrigation

Emitter clogging caused by root intrusion is an important influencing factor for subsurface drip irrigation system.At present,the main domestic and overseas methods for solving the root intrusion clogging includes produce special emitter and special filter.The emitter is improved in structure to prevent root intrusion and Trifluralin is injected to avoid the growth of root around the emitter.The sealed device holding Trifluralin herbicide is installed in the filter.This has good effect on root intrusion protection when Trifluralin along with water flows into the emitter.The measures,such as injecting chemical matter into irrigation system directly to kill the root around drip irrigation,controlling running state of the irrigation system logically to avoid the water intimidation,etc.,are introduced in detail in this paper.